dc1989a-a - ltm4676ey dual 13a or single 26a µmodule
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1dc1989aaf
DEMO MANUAL DC1989A-A
Description
LTM4676EY Dual 13A or Single 26A µModule Regulator
with Digital Power System Management
Demonstration circuit 1989A-A is a high efficiency, high density, µModule regulator with 4.5V to 16V input range. The output voltage is adjustable from 0.5V to 4V, and it can supply 50A maximum load current. The demo board has two LTM®4676 µModule regulators, and the LTM4676 is a dual 13A or single 26A step-down regulator with PMBus power system management. Please see LTM4676 data sheet for more detailed information
DC1989A-A powers up to default settings and produces power based on configuration resistors without the need for any serial bus communication. This allows easy evalu- ation of the DC/DC converter. To fully explore the extensive power system management features of the part, download the GUI software LTpowerPlay™ onto your PC and use LTC’s I2C/SMBus/PMBus dongle DC1613A to connect to
L, LT, LTC, LTM, Linear Technology, the Linear logo, Burst Mode, Dust Networks and Dust are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners.
the board. LTpowerPlay allows the user to reconfigure the part on the fly and store the configuration in EEPROM, view telemetry of voltage, current, temperature and fault status
GUI Download
The software can be downloaded from:
http://www.linear.com/ltpowerplay
For more details and instructions of LTpowerPlay, please refer to LTpowerPlay GUI for LTM4676 Quick Start Guide.
Design files for this circuit board are available at http://www.linear.com/demo/DC1989A-A
Figure 1. LTM4676/DC1989A-A Demo Circuit
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DEMO MANUAL DC1989A-A
Quick start proceDureDemonstration circuit 1989A-A is easy to set up to evalu-ate the performance of the LTM4676EY. Refer to Figure 2 for the proper measurement equipment setup and follow the procedure below.
1. With power off, connect the input power supply to VIN (4.5V to 16V) and GND (input return).
2. Connect the output load between VOUT0 and GND (Initial load: no load).
3. Connect the DVMs to the input and outputs. Set default switch position: SW1: ON; SW2: ON.
4. Turn on the input power supply and check for the proper output voltages. VOUT0 should be 1V ±1%.
5. Once the proper output voltages are established, ad-just the loads within the operating range and observe the output voltage regulation, ripple voltage and other parameters.
6. Connect the dongle and control the output voltages from the GUI. See “LTpowerPlay GUI for the LTM4676 Quick Start Guide” for details.
Note: When measuring the output or input voltage ripple, do not use the long ground lead on the oscilloscope probe. See Figure 3 for the proper scope probe technique. Short, stiff leads need to be soldered to the (+) and (–) terminals of an output capacitor. The probe’s ground ring needs to touch the (–) lead and the probe tip needs to touch the (+) lead.
Connecting a PC to DC1989A-A
You can use a PC to reconfigure the power management features of the LTM4676 such as: nominal VOUT, margin set points, OV/UV limits, temperature fault limits, sequenc-ing parameters, the fault log, fault responses, GPIOs and other functionality. The DC1613A dongle may be plugged when VIN is present.
performance summary Specifications are at TA = 25°C
PARAMETER CONDITION VALUE
Input Voltage Range 4.5V to 16V
Output Voltage, VOUT0 VIN = 4.5 to 16V, IOUT0 = 0A to 50A 0.5 to 4V, Default: 1V
Maximum Output Current, IOUT0 VIN = 4.5 to 16V, VOUT = 0.5V to 4V 50A
Typical Efficiency VIN = 12V, VOUT = 1V, IOUT = 50A 80.4%
Default Switching Frequency 350kHz
Table 1. LTM4676 Demo Cards for Up to 130A Point-of-Load Regulation
MAXIMUM OUTPUT CURRENT NUMBER OF OUTPUT VOLTAGESNUMBER OF LTM4676 µMODULE
REGULATORS ON THE BOARD DEMO BOARD NUMBER
13A, 13A 2 1 DC1811A
26A 1 1 DC2087A
50A 1 2 DC1989A-A
75A 1 3 DC1989A-B
100A 1 4 DC1989A-C
100A 1 1 (+ 3x LTM4620A) DC2106A-A
130A 1 1 (+ 3x LTM4630) DC2106A-B
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DEMO MANUAL DC1989A-A
Quick start proceDure
Figure 2. Proper Measurement Equipment Setup
Figure 3. Measuring Output Voltage Ripple
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DEMO MANUAL DC1989A-A
Quick start proceDure
Figure 4. Demo Setup with PC
Figure 5. Efficiency vs Load Current at VIN = 5V and VIN = 12V
Efficiency vs Load Current100
90
70
80
60
50
LOAD CURRENT (A)
EFFI
CIEN
CY (%
)
0 10 40 5030205 15 453525
VIN = 5VVIN = 12V
VOUT0 = 1V
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DEMO MANUAL DC1989A-A
Quick start proceDure
Figure 6. Output Voltage VOUT0 vs Load Current (VOUT0 RANGE = 0)
Figure 9. Current Sharing at VIN = 12V, VOUT0 = 1V (Based on the Current Readback)
Figure 7. Output Voltage Ripple at VIN = 12V, VOUT0 = 1V, IOUT0 = 50A
Figure 10. Total Current Readback vs Load Current at VIN = 12V, VOUT0 = 1V
Figure 8. Thermal Performance at VIN = 12V, VOUT0 = 1V, IOUT0 = 50A, TA = 23.8°C, Air Flow 200LFM
VOUT0 (20MHz BW) [50mV/DIV]
25A TO 50A LOAD STEP
VOUT0 (20MHz BW) [10mV/DIV]
LOAD CURRENT (A)0
PHAS
E CU
RREN
T (A
)
14
12
8
10
6
2
4
0
–210 20 30 5040
IOUT_PHASE#1IOUT_PHASE#2IOUT_PHASE#3IOUT_PHASE#4
LOAD CURRENT (A)0
TOTA
L CU
RREN
T RE
ADBA
CK (A
)
55
50
40
45
35
25
30
15
5
10
20
010 20 30 5040
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DEMO MANUAL DC1989A-A
Quick start proceDure
LTpowerPlay Software GUI
LTpowerPlay is a powerful Windows based development environment that supports Linear Technology power sys-tem management ICs, including the LTM4676, LTC3880, LTC3883, LTC2974 and LTC2978. The software supports a variety of different tasks. You can use LTpowerPlay to evaluate Linear Technology ICs by connecting to a demo board system. LTpowerPlay can also be used in an offline mode (with no hardware present) in order to build a mul-tichip configuration file that can be saved and reloaded at a later time. LTpowerPlay provides unprecedented diagnostic and debug features. It becomes a valuable diagnostic tool during board bring-up to program or tweak the power management scheme in a system, or to diagnose power issues when bringing up rails. LTpowerPlay utilizes the DC1613A USB-to-SMBus controller to communicate with one of many potential targets, including the LTM4676, the
LTC3880 and the LTC3883’s demo system, or a customer board. The software also provides an automatic update feature to keep the software current with the latest set of device drivers and documentation. The LTpowerPlay software can be downloaded from:
http://linear.com/ltpowerplay
To access technical support documents for LTC Digital Power Products visit Help. View online help on the LTpowerPlay menu.
LTpowerPlay QUICK START PROCEDURE
The following procedure describes how to use LTpowerPlay to monitor and change the settings of LTM4676.
1. Download and install the LTPowerPlay GUI:
http://linear.com/ltpowerplay
Figure 11. LTpowerPlay Main Interface
7dc1989aaf
DEMO MANUAL DC1989A-A
Quick start proceDure2. Launch the LTpowerPlay GUI.
a. The GUI should automatically identify the DC1989A-A. The system tree on the left hand side should look like this:
b. A green message box shows for a few seconds in the lower left hand corner, confirming that LTM4676 is communicating:
c. In the Toolbar, click the “R” (RAM to PC) icon to read the RAM from the LTM4676. This reads the configuration from the RAM of LTM4676 and loads it into the GUI.
d. If you want to change the output voltage to a different value, like 1.5V. In the Config tab, type in 1.5 in the VOUT_COMMAND box, like this:
Then, click the “W” (PC to RAM) icon to write these register values to the LTM4676. After finishing this step, you will see the output voltage will change to 1.5V.
If the write is successful, you will see the following message:
e. You can save the changes into the NVM. In the tool bar, click “RAM to NVM” button, as following
f. Save the demo board configuration to a (*.proj) file. Click the Save icon and save the file. Name it whatever you want.
8dc1989aaf
DEMO MANUAL DC1989A-A
parts ListITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER
Required Circuit Components
1 10 CIN1, CIN2, CIN4-CIN11 CAP., X5R, 10µF, 35V, 10%, 1210 AVX, 1210DD106KAT2A
2 1 CIN3 CAP., 150µF, 35V, ALUMINUM ELECTR., SUN ELECT., 35CE150AX
3 8 COUT1, COUT6, COUT7, COUT9, COUT12, COUT17, COUT18, COUT20
CAP., X5R, 100µF, 6.3V, 20% 1210 AVX, 12106D107KAT2A
4 1 C3 CAP., X5R, 220pF, 16V, 10%, 0603 AVX, 0603YD221KAT2A
5 6 COUT4, COUT5, COUT8, COUT15, COUT16, COUT19 CAP., 330µF, 6.3V, POSCAP, D3L SANYO, 6TPF330M9L
6 1 C7 CAP., X7R, 470pF, 16V, 10%, 0603 AVX, 0603YC471KAT2A
7 1 C4 CAP., X7R, 3.3nF, 16V, 10%, 0603 (3300pF) AVX, 0603YC332KAT2A
8 2 C5, C12 CAP., X5R, 10nF, 16V, 10%, 0603 (0.01µF) AVX, 0603YD103KAT2A
9 1 C21 CAP., X5R, 100nF, 16V, 10%, 0603 (0.1µF) AVX, 0603YD104KAT2A
10 1 C70 CAP., X5R, 1µF, 25V, 10%, 0805 AVX, 08053D105KAT2A
11 2 C65, C68 CAP., X5R, 1µF, 25V, 10%, 1206 AVX, 12063D105KAT2A
12 1 C67 CAP., X7R, 0.1µF, 25V, 10%, 1206 AVX, 12063C104KAT2A
13 1 C64 CAP., X5R, 4.7µF, 25V, 10%, 0603 MURATA, GRM188R61E475KE11D
14 1 C66 CAP., X5R, 0.22µF, 25V, 10%, 0805 AVX, 08053D224KAT2A
15 1 C69 CAP., X7R, 150pF, 25V, 10%, 0603 AVX, 06033C151KAT2A
16 2 D1, D2 LED GREEN S-GW TYPE SMD PANASONIC LN1371SGTRP
17 1 D3 LED RED S-TYPE GULL WING SMD PANASONIC LN1271RTR
18 1 J7 CONN HEADER 12POS 2MM STR DL PCB FCI 98414-G06-12ULF
19 1 J8 PIN HEADER 20 DUAL ROW RA (M) Mill Max 802-40-020-20-0001
20 1 J9 CONN SOCKET 20 DUAL ROW RA (F) Mill Max 803-43-020-20-001
21 2 J10, J11 CONN, BNC, 5 PINS CONNEX, 112404
22 1 Q1 MOSFET P-CH 20V 0.58A SOT-23 VISHAY TP0101K-T1-E3
23 2 Q2, Q3 MOSFET N-CH 60V 115mA SOT-23 FAIRCHILD 2N7002K
24 2 Q11, Q12 N-CHANNEL 30-V MOSFET, TO-252 VISHAY, SUD50N03-09P-E3
25 1 R20 RES., CHIP, 22.6k, 1%, 0603 VISHAY CRCW060322K6FKEA
26 25 R2, R4, R18, R25, R26, R120-R122, R30, R32, R47, R48, R50, R56, R58, R60, R72, R74, R85, R86, R89, R90, R92, R104, R119
RES., CHIP, 0Ω, 1%, 0603 VISHAY CRCW06030000Z0EA
27 4 R49, R51, R53, R54 RES., CHIP, 0Ω, 1%, 2010 VISHAY CRCW20100000Z0EA
28 16 R6, R7, R8, R9, R10, R11, R12, R15, R35, R36, R39, R64, R78, R97, R98, R116
RES., CHIP, 10k, 1%, 0603 VISHAY CRCW060310K0FKEA
29 1 R27 RES., CHIP, 51k, 1%, 0603 VISHAY CRCW060351K0FKEA
30 1 R14 RES., CHIP, 3.4k, 1%, 0603 VISHAY CRCW06033K40FKEA
31 2 R16, R41 RES., CHIP, 10Ω, 1%, 0603 VISHAY CRCW060310R0FKEA
32 1 R112 RES., CHIP, 100Ω, 1%, 0603 VISHAY CRCW0603100RFKEA
33 1 R113 RES., CHIP, 1.4k, 1%, 0603 VISHAY CRCW06031K40FKEA
34 1 R19 RES., CHIP, 787Ω, 1%, 0603 VISHAY CRCW0603787RFKEA
35 1 R40 RES., CHIP, 1.65k, 1%, 0603 VISHAY CRCW06031K65FKEA
36 1 R42 RES., CHIP, 1.65k, 1%, 0603 VISHAY CRCW06031K65FKEA
37 1 R80 RES., CHIP, 2.43k, 1%, 0603 VISHAY CRCW06032K43FKEA
38 2 R95, R96 RES., CHIP, 4.99k, 1%, 0603 VISHAY CRCW06034K99FKEA
9dc1989aaf
DEMO MANUAL DC1989A-A
39 2 R99, R100 RES., CHIP, 200Ω, 1%, 0603 VISHAY CRCW0603200RFKEA
40 1 R101 RES., CHIP, 127Ω, 1%, 0603 VISHAY CRCW0603127RFKEA
41 1 R123 RES., CHIP, 1M, 1%, 0603 VISHAY CRCW06031M00FKEA
42 1 R105 RES., CHIP, 681k, 1%, 0603 VISHAY CRCW0603681KFKEA
43 1 R106 RES., CHIP, 3.3Ω, 1%, 0603 VISHAY CRCW06033R30FKEA
44 1 R107 RES., CHIP, 82.5Ω, 1%, 0603 VISHAY CRCW060382R5FKEA
45 2 R108, R118 RES., CHIP, 0.01Ω, 1%, 2010 VISHAY, WSL2010R0100FEA
46 1 R109 RES., CHIP, 100k, 1%, 0603 VISHAY CRCW0603100KFKEA
47 1 R110 TRIMMING POTENTIOMETER, 5k BOURNS, 3386P-1-502LF
48 2 R111, R115 RES., CHIP, 20k, 1%, 0603 VISHAY CRCW060320K0FKEA
49 1 R114 RES., CHIP, 154k, 1%, 0603 VISHAY CRCW0603154KFKEA
50 1 R117 RES., CHIP, 2, 1%, 0603 VISHAY CRCW06032R00FKEA
51 2 SW1, SW2 CONNECTOR, SUB MINIATURE SLIDE SWITCHES
C&K., JS202011CQN
52 2 U1, U2 IC, LTM4676EY LINEAR TECH. LTM4676EY
53 1 U5 IC, 24LC025T-E/OT SOT-23 6-LEAD MICROCHIP, 24LC025T-E/OT
54 1 U6 IC., LT1129CS8-5, S8 LINEAR TECH. LT1129CS8-5
55 1 U7 IC., LTC6992-1, S6-TSOT LINEAR TECH. LTC6992CS6-1
56 1 U8 IC., LT1803IS5, S5-TSOT LINEAR TECH. LT1803IS5
Additional Demo Board Circuit Components
1 0 CIN12-CIN15-CIN19 (OPT) CAP., OPTIONAL
2 0 C1, COUT2, C2, COUT3 (OPT) C6, C8, C9, COUT10, C10, COUT11, C11, COUT13, C13, C14, C15, C16, C17, C18, C19, C20, COUT4, COUT14, COUT24, COUT23, COUT26, COUT21, COUT22, COUT25, COUT27, COUT28, COUT29, COUT30, COUT31, COUT32, COUT35, COUT33, COUT36, COUT37, COUT38, COUT34
CAP., OPTIONAL
3 0 R1, R3, R5, R17, R34, R31, R33, R29, R38, R52, R55, R57, R59, R61, R28, R63, R71, R73, R75, R77, R88, R91, R93, R94, R102, R103, R13, R37, R62, R76, R79, R21, R22, R23, R24, R43, R44, R45, R46, R67, R66, R65, R68, R69, R68, R69, R70, R81, R82, R83, R84, R87
RES., OPTIONAL
4 0 U3 , U4 (OPT) OPTIONAL
Hardware: For Demo Board Only
1 23 E2-E24 TESTPOINT, TURRET, 0.062" MILL-MAX, 2308-2-00-80-00-00-07-0
2 2 JP1, JP2 HEADER, 1X3 PIN 0.079" SINGLE ROW SULLIN, NRPN031PAEN-RC
3 2 XJP1, XJP2 SHUNT, 0.079" CENTER SAMTEC, 2SN-KB-G
4 6 J1, J2, J3, J4, J5, J6 STUD, TESTPIN PEM KFH-032-10
5 12 J1, J2, J3, J4, J5, J6 (x2) NUT, BRASS 10-32 ANY #10-32M/S
6 6 J1, J2, J3, J4, J5, J6 RING, LUG #10 KEYSTONE #10
7 6 J1, J2, J3, J4, J5, J6 WASHER, TIN PLATED BRASS 10EXT
8 4 (STAND-OFF) STAND-OFF, NYLON 0.50" TALL KEYSTONE, 8833(SNAP ON)
9 1 FAB, PRINTED CIRCUIT BOARD DEMO CIRCUIT 1989A
parts List
10dc1989aaf
DEMO MANUAL DC1989A-A
schematic Diagram5 5
4 4
3 3
2 2
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GY
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IT IS
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UIT
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PT)
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OPT
P1P1
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UT0
A1
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D1
ISN
S0b
-E
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ISN
S0b
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ISNS1b-G1
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VOUT1J1
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UT0
B1
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VINH1K12
VINH1L11
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VINH1M11
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R24
(OPT
)
R24
(OPT
)
+C
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T833
0uF
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0uF
CIN
110
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110
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10
P3P3
R23
(OPT
)
R23
(OPT
)
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315
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22.6
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GN
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R17
OPT
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GN
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R18 0R18 0
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3.3n
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C5
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1
2
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CO
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UT1
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OPT
C6
OPT
11dc1989aaf
DEMO MANUAL DC1989A-A
schematic Diagram5 5
4 4
3 3
2 2
1 1
DD
CC
BB
AA
OPTIONAL JUMPER FOR SINGLE
OUTPUT CONFIGURATION
ON
OFF
RU
N1
1210
0.035 VIA
TESTPOINTS
1210
1210
1210
1210
6.3V
1210
1210
0805
0805
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6.3V
1210
1210
OPT
OPT
6.3V
µM
odul
e R
EGU
LATO
R W
ITH
DIG
ITA
L PO
WER
MA
NA
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ENT
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RU
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TB
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GPI
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C
VOSN
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C
RU
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RU
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GPI
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CO
MP0
CO
MP1
VOSN
S0+
VOSN
S1
VOSN
S0-
SIZE
DA
TE:
IC N
O.
RE
V.
SHEE
TO
F
TITL
E:
APP
RO
VALS
PCB
DES
.
APP
EN
G.
TEC
HN
OLO
GY
Fax:
(408
)434
-050
7
Milp
itas,
CA
950
35P
hone
: (40
8)43
2-19
00
1630
McC
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AS
MA
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A B
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ON
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RIN
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CU
IT B
OA
RD
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YOU
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SIG
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ICA
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PER
FOR
MA
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ELIA
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ITY.
CO
NTA
CT
LIN
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TEC
HN
OLO
GY
APP
LIC
ATI
ON
S EN
GIN
EER
ING
FO
R A
SSIS
TAN
CE.
THIS
CIR
CU
IT IS
PR
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RY
TO L
INEA
R T
ECH
NO
LOG
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ND
SC
HE
MA
TIC
SUPP
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TEC
HN
OLO
GY
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ALE
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May
28,
201
32
6
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H E
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LY-P
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M46
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DEM
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IRC
UIT
198
9A-A
SIZE
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SHEE
TO
F
TITL
E:
APP
RO
VALS
PCB
DES
.
APP
EN
G.
TEC
HN
OLO
GY
Fax:
(408
)434
-050
7
Milp
itas,
CA
950
35P
hone
: (40
8)43
2-19
00
1630
McC
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LTC
Con
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mer
Use
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CU
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MER
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TIC
ELI
NEA
R T
ECH
NO
LOG
Y H
AS
MA
DE
A B
EST
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RT
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CU
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MER
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ED S
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IFY
PRO
PER
AN
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BLE
OPE
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TIO
N IN
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CTU
AL
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ATI
ON
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OM
PON
ENT
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STIT
UTI
ON
AN
D P
RIN
TED
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CU
IT B
OA
RD
LA
YOU
T M
AY
SIG
NIF
ICA
NTL
Y A
FFEC
T C
IRC
UIT
PER
FOR
MA
NC
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R R
ELIA
BIL
ITY.
CO
NTA
CT
LIN
EAR
TEC
HN
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GY
APP
LIC
ATI
ON
S EN
GIN
EER
ING
FO
R A
SSIS
TAN
CE.
THIS
CIR
CU
IT IS
PR
OPR
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RY
TO L
INEA
R T
ECH
NO
LOG
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ND
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HE
MA
TIC
SUPP
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TEC
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GY
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ALE
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May
28,
201
32
6
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H E
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LY-P
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C/D
C S
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M46
76EY
DEM
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IRC
UIT
198
9A-A
SIZE
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O.
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V.
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TO
F
TITL
E:
APP
RO
VALS
PCB
DES
.
APP
EN
G.
TEC
HN
OLO
GY
Fax:
(408
)434
-050
7
Milp
itas,
CA
950
35P
hone
: (40
8)43
2-19
00
1630
McC
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LTC
Con
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Use
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STO
MER
NO
TIC
ELI
NEA
R T
ECH
NO
LOG
Y H
AS
MA
DE
A B
EST
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CIR
CU
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MER
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IFY
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TIO
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AL
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LIC
ATI
ON
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PON
ENT
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STIT
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ON
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RIN
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CU
IT B
OA
RD
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YOU
T M
AY
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ICA
NTL
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FFEC
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IRC
UIT
PER
FOR
MA
NC
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ELIA
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ITY.
CO
NTA
CT
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EAR
TEC
HN
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GY
APP
LIC
ATI
ON
S EN
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FO
R A
SSIS
TAN
CE.
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CIR
CU
IT IS
PR
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RY
TO L
INEA
R T
ECH
NO
LOG
Y A
ND
SC
HE
MA
TIC
SUPP
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FO
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EAR
TEC
HN
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GY
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TS.
SC
ALE
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w.li
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.com 2
Tues
day,
May
28,
201
32
6
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H E
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LY-P
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C/D
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WN
HZ
JIA
N L
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M46
76EY
DEM
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198
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P10
CO
UT1
4O
PTC
OU
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OPT
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SW2
1
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34
5
6
R52
OPT
R52
OPT
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OPT
C9
OPT
CO
UT2
010
0uF
CO
UT2
010
0uF
R47
0R
470
R32
0R
320
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0R30
0
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1.65
KR
421.
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C11
OPT
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1010
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IN10
10uF
R50
0R
500
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UT1
3O
PTC
OU
T13
OPT
R46
(OPT
)
R46
(OPT
)
R39
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GN
D
J6
GN
D
C7
C7
R35
10K
R35
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VOU
T1_S
NS
+C
OU
T19
330u
F+
CO
UT1
933
0uF
R54
020
10R
540
2010
R45
(OPT
)
R45
(OPT
)
R27
R27
R38
OPT
R38
OPT
R53
020
10R
530
2010
R55
OPT
R55
OPT
R28
OPT
R28
OPT
R51
020
10R
510
2010
E10
GN
D1_
SNS
E10
GN
D1_
SNS
R11
90
R11
90
CIN
1110
uFC
IN11
10uF
CO
UT1
710
0uF
1210
CO
UT1
710
0uF
1210
R34
OPT
R34
OPT
R31
OPT
R31
OPT
P9P9
CO
UT2
2O
PTC
OU
T22
OPT
C10
OPT
C10
OPT
R56
0R
560
P7P7
R43
(OPT
)R
43(O
PT)
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OPT
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PT)
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CO
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R49
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490
2010
P6P6
CO
UT1
210
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CO
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210
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OPT
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480
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LTM
4676
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LTM
4676
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VO
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A3
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ISN
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1
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B2
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2
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VOUT1K3
VOUT1L1
VOUT1L2
VO
UT0
C1
VO
UT0
C2
VO
UT0
C3
VO
UT0
D3
GNDA4
GNDA6
GNDA7
GNDA8
VOUT1L3
VOUT1M1
VOUT1M2
VOUT1M3
GNDA9
GNDA10
GNDB4
GNDB5
AS
EL
G4
FSW
PH
CFG
H4
GNDB6
GNDB7
GNDB8
GNDB9
GP
IO0
E4
GP
IO1
F4
SN
UB
0A
5
GNDC4
TSN
S0b
C5
TSN
S0a
D5
ALE
RT
E5
RU
N0
F5
VO
UT0
CFG
G5
VTR
IM0C
FGH
5
TSNS1aJ5
TSNS1bK5
GNDC6
SNUB1M5
GNDC7
GNDC8
GNDC9
SD
AD
6S
CL
E6
RU
N1
F6
VO
UT1
CFG
G6
VTR
IM1C
FGH
6
VD
D25
J6
WP
K6
GNDD4
GNDE3
GNDF3
GNDF10
GNDG3
GNDG10
SY
NC
E7
GNDM9
GNDM10
SH
AR
E_C
LKH
7
VD
D33
J7
GNDG11
GNDG12
GNDL8GNDL7
GNDL9
GNDH3
CO
MP
0bD
8C
OM
P0a
E8
SGNDF7
SGNDF8
COMP1aH8
COMP1bJ8
GNDH10
GNDJ4
GNDM8
VO
SN
S0+
D9
VO
SN
S0-
E9
INTV
CC
F9
INTV
CC
G9
VOSNS1H9
VORB1J9
GNDJ10
GNDL4
GNDL5
GNDK4
SW
0B
10
DNCE11
VO
RB
0+D
10
VO
RB
0-E
10
GNDL6
GNDK7
GNDK8
GNDK9
DNCC10
SW1L10
GNDM4
VIN
H0
B12
VIN
H0
B11
VIN
H0
A12
VIN
H0
A11
DNCK10
VIN
LF1
2
GNDM6
DNCH11
VINH1H12
VINH1J11
VINH1J12
VINH1K11
VIN
H0
E12
VIN
H0
D12
VIN
H0
D11
VIN
H0
C12
VIN
H0
C11
VIN
LF1
1
GNDM7
VINH1K12
VINH1L11
VINH1L12
VINH1M11
VINH1M12
SGNDG7
SGNDG8
GNDD7
CIN
910
uFC
IN9
10uF
P11
P11
12dc1989aaf
DEMO MANUAL DC1989A-A
schematic Diagram5 5
4 4
3 3
2 2
1 1
DD
CC
BB
AA
1210
0.035 VIA
TESTPOINTS
1210
1210
1210
1210
1210
1210
0805
0805
1210
1210
1210
µM
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e R
EGU
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L PO
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GPI
O0B
VIN
VOU
T0
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VOU
T0
VOSN
S0+
VOSN
S0+
VOSN
S0-
SHAR
E_C
LK
ALER
TBC
OM
P0
CO
MP0
SCL
SDA
GPI
O0B
RU
N0
SYN
C
SIZE
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TITL
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APP
RO
VALS
PCB
DES
.
APP
EN
G.
TEC
HN
OLO
GY
Fax:
(408
)434
-050
7
Milp
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CA
950
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: (40
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1630
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RO
VALS
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.
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(408
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-050
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itas,
CA
950
35P
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198
9A-A
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RO
VALS
PCB
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.
APP
EN
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TEC
HN
OLO
GY
Fax:
(408
)434
-050
7
Milp
itas,
CA
950
35P
hone
: (40
8)43
2-19
00
1630
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or C
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Use
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MER
NO
TIC
ELI
NEA
R T
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NO
LOG
Y H
AS
MA
DE
A B
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RT
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IFY
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M46
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DEM
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UIT
198
9A-A
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12O
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IN12
OPT
+C
OU
T26
OPT
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CO
UT2
7O
PTCO
UT2
7O
PT
R69
(OPT
)
R69
(OPT
)
CO
UT2
4O
PTC
OU
T24
OPT
P17
P17
C13
OPTC13
OPT
C14
OPT
C14
OPT
C15
OPT
C15
OPT
+C
OU
T28
OPT
+C
OU
T28
OPT
R61
OPT
R61
OPT
R12
10
R12
10
R59
OPT
R59
OPT
R66
(OPT
)R
66(O
PT)
R67
(OPT
)R
67(O
PT)
CIN
13O
PTC
IN13
OPT
P14
P14
P15
P15
R57
OPTR57
OPT
R68
(OPT
)R
68(O
PT)
U3
OP
TU
3O
PT
VO
UT0
A1
VO
UT0
A2
VO
UT0
A3
VO
UT0
D1
ISN
S0b
-E
1
ISN
S0b
+F1
ISNS1b-G1
ISNS1b+H1
VOUT1J1
VOUT1J2
VOUT1J3
VOUT1K1
VO
UT0
B1
VO
UT0
B2
VO
UT0
B3
VO
UT0
D2
ISN
S0a
-E
2
ISN
S0a
+F2
ISNS1a-G2
ISNS1a+H2
VOUT1K2
VOUT1K3
VOUT1L1
VOUT1L2
VO
UT0
C1
VO
UT0
C2
VO
UT0
C3
VO
UT0
D3
GNDA4
GNDA6
GNDA7
GNDA8
VOUT1L3
VOUT1M1
VOUT1M2
VOUT1M3
GNDA9
GNDA10
GNDB4
GNDB5
AS
EL
G4
FSW
PH
CFG
H4
GNDB6
GNDB7
GNDB8
GNDB9
GP
IO0
E4
GP
IO1
F4
SN
UB
0A
5
GNDC4
TSN
S0b
C5
TSN
S0a
D5
ALE
RT
E5
RU
N0
F5
VO
UT0
CFG
G5
VTR
IM0C
FGH
5
TSNS1aJ5
TSNS1bK5
GNDC6
SNUB1M5
GNDC7
GNDC8
GNDC9
SD
AD
6S
CL
E6
RU
N1
F6
VO
UT1
CFG
G6
VTR
IM1C
FGH
6
VD
D25
J6
WP
K6
GNDD4
GNDE3
GNDF3
GNDF10
GNDG3
GNDG10
SY
NC
E7
GNDM9
GNDM10
SH
AR
E_C
LKH
7
VD
D33
J7
GNDG11
GNDG12
GNDL8GNDL7
GNDL9
GNDH3
CO
MP
0bD
8C
OM
P0a
E8
SGNDF7
SGNDF8
COMP1aH8
COMP1bJ8
GNDH10
GNDJ4
GNDM8
VO
SN
S0+
D9
VO
SN
S0-
E9
INTV
CC
F9
INTV
CC
G9
VOSNS1H9
VORB1J9
GNDJ10
GNDL4
GNDL5
GNDK4
SW
0B
10
DNCE11
VO
RB
0+D
10
VO
RB
0-E
10
GNDL6
GNDK7
GNDK8
GNDK9
DNCC10
SW1L10
GNDM4
VIN
H0
B12
VIN
H0
B11
VIN
H0
A12
VIN
H0
A11
DNCK10
VIN
LF1
2
GNDM6
DNCH11
VINH1H12
VINH1J11
VINH1J12
VINH1K11
VIN
H0
E12
VIN
H0
D12
VIN
H0
D11
VIN
H0
C12
VIN
H0
C11
VIN
LF1
1
GNDM7
VINH1K12
VINH1L11
VINH1L12
VINH1M11
VINH1M12
SGNDG7
SGNDG8
GNDD7
P13
P13
R63
OPT
R63
OPT
R62
OPT
R62
OPT
CIN
14O
PTC
IN14
OPT
P16
P16
P12
P12
R60
0R
600
R70
(OPT
)
R70
(OPT
)
CO
UT2
3O
PTC
OU
T23
OPT
CO
UT2
9O
PTC
OU
T29
OPT
CO
UT3
0O
PTC
OU
T30
OPT
C16
OPT
C16
OPT
CIN
15O
PTC
IN15
OPT
CO
UT2
5O
PTC
OU
T25
OPT
P18
P18
R64
10K
R64
10K
R65
(OPT
)R
65(O
PT)
R58
0R58
0
13dc1989aaf
DEMO MANUAL DC1989A-A
schematic Diagram5 5
4 4
3 3
2 2
1 1
DD
CC
BB
AA
1210
0.035 VIA
TESTPOINTS
1210
1210
1210
1210
1210
1210
0805
0805
1210
1210
1210
µM
odul
e R
EGU
LATO
R W
ITH
DIG
ITA
L PO
WER
MA
NA
GEM
ENT
SHAR
E_C
LK
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TB
SCL
SDA
SYN
C
GPI
O0B
VIN
VOU
T0
VIN
VOU
T0
VOSN
S0+
VOSN
S0+
VOSN
S0-
SHAR
E_C
LK
ALER
TB
CO
MP0
CO
MP0
SCL
SDA
GPI
O0B
RU
N0
SYN
C
SIZE
DA
TE:
IC N
O.
RE
V.
SHEE
TO
F
TITL
E:
APP
RO
VALS
PCB
DES
.
APP
EN
G.
TEC
HN
OLO
GY
Fax:
(408
)434
-050
7
Milp
itas,
CA
950
35P
hone
: (40
8)43
2-19
00
1630
McC
arth
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lvd.
LTC
Con
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tial-F
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Use
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MER
NO
TIC
ELI
NEA
R T
ECH
NO
LOG
Y H
AS
MA
DE
A B
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RT
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IFY
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CU
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PER
FOR
MA
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ITY.
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NTA
CT
LIN
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TEC
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GY
APP
LIC
ATI
ON
S EN
GIN
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FO
R A
SSIS
TAN
CE.
THIS
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CU
IT IS
PR
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RY
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NO
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Y A
ND
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M46
76EY
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O C
IRC
UIT
198
9A-A
SIZE
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TE:
IC N
O.
RE
V.
SHEE
TO
F
TITL
E:
APP
RO
VALS
PCB
DES
.
APP
EN
G.
TEC
HN
OLO
GY
Fax:
(408
)434
-050
7
Milp
itas,
CA
950
35P
hone
: (40
8)43
2-19
00
1630
McC
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MER
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TIC
ELI
NEA
R T
ECH
NO
LOG
Y H
AS
MA
DE
A B
EST
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RT
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N A
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CU
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HA
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CU
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MER
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IFIC
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ON
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AIN
S TH
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ER'S
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ILIT
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IFY
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PER
AN
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BLE
OPE
RA
TIO
N IN
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CTU
AL
APP
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ATI
ON
. C
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ENT
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STIT
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ON
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D P
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CU
IT B
OA
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NIF
ICA
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9A-A
C19
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R81
(OPT
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R73
OPT
R73
OPT
R75
OPT
R75
OPT
+C
OU
T38
OPT
+C
OU
T38
OPT
U4
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TU
4O
PT
VO
UT0
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VO
UT0
A2
VO
UT0
A3
VO
UT0
D1
ISN
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-E
1
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S0b
+F1
ISNS1b-G1
ISNS1b+H1
VOUT1J1
VOUT1J2
VOUT1J3
VOUT1K1
VO
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VOUT1K2
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C1
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UT0
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VO
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GNDA4
GNDA6
GNDA7
GNDA8
VOUT1L3
VOUT1M1
VOUT1M2
VOUT1M3
GNDA9
GNDA10
GNDB4
GNDB5
AS
EL
G4
FSW
PH
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H4
GNDB6
GNDB7
GNDB8
GNDB9
GP
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GP
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F4
SN
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0A
5
GNDC4
TSN
S0b
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TSN
S0a
D5
ALE
RT
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RU
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CFG
G5
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5
TSNS1aJ5
TSNS1bK5
GNDC6
SNUB1M5
GNDC7
GNDC8
GNDC9
SD
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CL
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RU
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F6
VO
UT1
CFG
G6
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6
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D25
J6
WP
K6
GNDD4
GNDE3
GNDF3
GNDF10
GNDG3
GNDG10
SY
NC
E7
GNDM9
GNDM10
SH
AR
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LKH
7
VD
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GNDG11
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0bD
8C
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COMP1aH8
COMP1bJ8
GNDH10
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VO
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INTV
CC
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VOSNS1H9
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GNDL5
GNDK4
SW
0B
10
DNCE11
VO
RB
0+D
10
VO
RB
0-E
10
GNDL6
GNDK7
GNDK8
GNDK9
DNCC10
SW1L10
GNDM4
VIN
H0
B12
VIN
H0
B11
VIN
H0
A12
VIN
H0
A11
DNCK10
VIN
LF1
2
GNDM6
DNCH11
VINH1H12
VINH1J11
VINH1J12
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VIN
H0
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H0
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VIN
H0
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VIN
H0
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H0
C11
VIN
LF1
1
GNDM7
VINH1K12
VINH1L11
VINH1L12
VINH1M11
VINH1M12
SGNDG7
SGNDG8
GNDD7
R71
OPTR71
OPT
C18
OPT
C18
OPT
CIN
16O
PTC
IN16
OPT
P25
P25
P21
P21
R82
(OPT
)R
82(O
PT)
P20
P20
R77
OPT
R77
OPT
CIN
17O
PTC
IN17
OPT
P19
P19
R76
OPT
R76
OPT
P23
P23
R74
0R
740
R84
(OPT
)
R84
(OPT
)
CO
UT3
1O
PTC
OU
T31
OPT
CO
UT3
6O
PTC
OU
T36
OPT
CO
UT3
7O
PTC
OU
T37
OPT
CIN
18O
PTC
IN18
OPT
CO
UT3
3O
PTC
OU
T33
OPT
C20
OPT
C20
OPT
R79
(OPT
)R
79(O
PT)
R72
0R72
0
P24
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R78
10K
R78
10K
P22
P22
CIN
19O
PTC
IN19
OPT
+C
OU
T34
OPT
+C
OU
T34
OPT
R83
(OPT
)
R83
(OPT
)
CO
UT3
5O
PTCO
UT3
5O
PT
CO
UT3
2O
PTC
OU
T32
OPT
R12
20
R12
20
C17
OPTC17
OPT
R80
(OPT
)R
80(O
PT)
14dc1989aaf
DEMO MANUAL DC1989A-A
schematic Diagram5 5
4 4
3 3
2 2
1 1
DD
CC
BB
AA
GPI
O0
GPI
O1
ALER
TB
TO D
C16
13A
ALL
PA
RTS
ON
TH
IS P
AG
E A
RE
FO
R D
EM
O O
NLY
, NO
T N
EE
DE
D IN
CU
STO
ME
R D
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IGN
µM
odul
e R
EGU
LATO
R W
ITH
DIG
ITA
L PO
WER
MA
NA
GEM
ENT
FAU
LT1
FAU
LT3
SYN
C_C
FAU
LT2
VCC
3V3
3V3
3V3
3V3
3V3
GPI
O0B
GPI
O1B
ALER
TB
ALER
TBSD
ASC
L
RU
N0
RU
N1
SHAR
E_C
LK
GPI
O1B
GPI
O0B
SYN
C
A0_E
EPR
OM
A1_E
EPR
OM
VCC
SIZE
DA
TE:
IC N
O.
RE
V.
SHEE
TO
F
TITL
E:
APP
RO
VALS
PCB
DES
.
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(408
)434
-050
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950
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: (40
8)43
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198
9A-A
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RE
V.
SHEE
TO
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RO
VALS
PCB
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(408
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950
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ON
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ON
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GY
APP
LIC
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ON
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TAN
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UIT
198
9A-A
SIZE
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RE
V.
SHEE
TO
F
TITL
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RO
VALS
PCB
DES
.
APP
EN
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TEC
HN
OLO
GY
Fax:
(408
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-050
7
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itas,
CA
950
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1630
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NEA
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EST
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RT
TO D
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CU
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R A
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TAN
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CU
IT IS
PR
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M46
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DEM
O C
IRC
UIT
198
9A-A
R92
0R
920
Q2
2N70
02A
Q2
2N70
02A
23
1
E20
AUXP E2
0
AUXP
R93
OPT
R93
OPT
R90 0R90 0
D1
GR
EEN
D1
GR
EEN
E15
SHAR
E_C
LK E15
SHAR
E_C
LK
R94
OPT
R94
OPT
R10
020
0R
100
200
R88
OPT
R88
OPT
E11
GPI
O1B
E11
GPI
O1B
R97
10K
R97
10K
E18
GPI
O0B
E18
GPI
O0B
D3
RED
D3
RED
R86
0R
860
R85
0R
850
D2
GR
EEN
D2
GR
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E22 SG
ND
E22 SG
ND
U5
24LC
025-
I/ST
U5
24LC
025-
I/ST
SC
L1
VS
S2
SD
A3
A1
4A
05
VC
C6
E21
RU
N1
E21
RU
N1
E19
RU
N0
E19
RU
N0
R98
10K
R98
10K
R10
112
7R
101
127
R91
OPT
R91
OPT
J9
DEM
O H
EAD
ER (F
)
J9
DEM
O H
EAD
ER (F
)
+3.3
V1
VIN
_SN
S2
GN
D3
VIN
_EN
4
SC
L5
ALE
RTB
6
SD
A7
CO
NTR
OL0
8
SP
AR
E1
9
SP
AR
E2
10
WD
I/RE
SE
TB11
CO
NTR
OL1
12
SP
AR
E3
13
SH
AR
E_C
LK14
FAU
LT4
15
FAU
LT2
16
FAU
LT3
17
FAU
LT1
18
SP
AR
E4
19
GN
D20
E13
SDA
E13
SDA
R95
4.99
KR
954.
99K
Q3
2N70
02A
Q3
2N70
02A
23
1
E14
SCL
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SCL
J7J7
AU
XP
1
SD
A2
GN
D3
SC
L4
LGK
PW
R5
ALE
RTB
6
GP
IO_1
7
OU
TEN
_08
OU
TEN
_19
GN
D10
AU
XS
CL
11
AU
XS
DA
12
E16
SYN
C
E16
SYN
C
R96
4.99
KR
964.
99K
E17
SGN
D
E17
SGN
D
J8
DEM
O H
EAD
ER (M
)
J8
DEM
O H
EAD
ER (M
)
+3.3
V1
VIN
_SN
S2
GN
D3
VIN
_EN
4
SC
L5
ALE
RTB
6
SD
A7
CO
NTR
OL0
8
SP
AR
E1
9
SP
AR
E2
10
WD
I/RE
SE
TB11
CO
NTR
OL1
12
SP
AR
E3
13
SH
AR
E_C
LK14
FAU
LT4
15
FAU
LT2
16
FAU
LT3
17
FAU
LT1
18
SP
AR
E4
19
GN
D20 R99
200
R99
200
R87
OPT
.R
87O
PT.
E12
ALER
TB E12
ALER
TB
C21
100n
FC
2110
0nF
R89
0R
890
Q1
TP01
01K
Q1
TP01
01K
2 3
1
15dc1989aaf
DEMO MANUAL DC1989A-A
Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no representa-tion that the interconnection of its circuits as described herein will not infringe on existing patent rights.
schematic Diagram
Figu
re 7
. Circ
uit S
chem
atic
5 5
4 4
3 3
2 2
1 1
DD
CC
BB
AA
ALL
PA
RTS
ON
TH
IS P
AG
E A
RE
FO
R D
EM
O O
NLY
, NO
T N
EE
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2-19
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McC
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16dc1989aaf
DEMO MANUAL DC1989A-A
Linear Technology Corporation1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 ● FAX: (408) 434-0507 ● www.linear.com LINEAR TECHNOLOGY CORPORATION 2013
LT 0813 • PRINTED IN USA
DEMONSTRATION BOARD IMPORTANT NOTICE
Linear Technology Corporation (LTC) provides the enclosed product(s) under the following AS IS conditions:
This demonstration board (DEMO BOARD) kit being sold or provided by Linear Technology is intended for use for ENGINEERING DEVELOPMENT OR EVALUATION PURPOSES ONLY and is not provided by LTC for commercial use. As such, the DEMO BOARD herein may not be complete in terms of required design-, marketing-, and/or manufacturing-related protective considerations, including but not limited to product safety measures typically found in finished commercial goods. As a prototype, this product does not fall within the scope of the European Union directive on electromagnetic compatibility and therefore may or may not meet the technical requirements of the directive, or other regulations.
If this evaluation kit does not meet the specifications recited in the DEMO BOARD manual the kit may be returned within 30 days from the date of delivery for a full refund. THE FOREGOING WARRANTY IS THE EXCLUSIVE WARRANTY MADE BY THE SELLER TO BUYER AND IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESSED, IMPLIED, OR STATUTORY, INCLUDING ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR PURPOSE. EXCEPT TO THE EXTENT OF THIS INDEMNITY, NEITHER PARTY SHALL BE LIABLE TO THE OTHER FOR ANY INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES.
The user assumes all responsibility and liability for proper and safe handling of the goods. Further, the user releases LTC from all claims arising from the handling or use of the goods. Due to the open construction of the product, it is the user’s responsibility to take any and all appropriate precautions with regard to electrostatic discharge. Also be aware that the products herein may not be regulatory compliant or agency certified (FCC, UL, CE, etc.).
No License is granted under any patent right or other intellectual property whatsoever. LTC assumes no liability for applications assistance, customer product design, software performance, or infringement of patents or any other intellectual property rights of any kind.
LTC currently services a variety of customers for products around the world, and therefore this transaction is not exclusive.
Please read the DEMO BOARD manual prior to handling the product. Persons handling this product must have electronics training and observe good laboratory practice standards. Common sense is encouraged.
This notice contains important safety information about temperatures and voltages. For further safety concerns, please contact a LTC applica-tion engineer.
Mailing Address:
Linear Technology
1630 McCarthy Blvd.
Milpitas, CA 95035
Copyright © 2004, Linear Technology Corporation
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