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02.2007

Battery Charger SolutionsHigh Performance Analog ICs

Linear Technologys high performance battery charger ICs enable long battery life by providing precision charging control, constant status monitoring and stringent battery protection. Proprietary design techniques provide battery and circuit protection, small solution footprints, faster charging, 100% standalone operation, improved thermal performance and high reliability operation.

Each battery chemistry has unique battery-charging requirements. Selecting the correct battery charger increases the operational run time of the end-product by ensuring that the battery is always optimally charged. This guide contains the essential technical criteria to easily identify the optimum battery charging IC for charging single-cell, multiple-cell and even battery packs, regardless of chemistry. For information on our latest battery charging products, visit our website at www.linear.com

How to Use this GuideIf your search is based on: Start with:

Battery Chemistry and Number of Cells in Series and Charge Current

Selector Guides: Pages 18-19

Battery Chemistry (a color coded guide)

Block Diagrams: Page 1

Charging Topology

Block Diagrams: Page 1

Design and Application Topics (USB, Smart Battery, etc.)

Further Reading: Page 20

Block Diagramspage

Linear Charger

NiMH NiCd

Nickel

02, 10

LithiumVIN Linear Charger Batt

Li-Ion 4.2V/cell (1 and 2 cell) Li-Ion 4.0 4.4V/cell (1 and 2 cell) USB PowerPath Control Thermal Regulation/Thermistor Coin/Low Current Cells Charge Monitor/Gas Gauge No Trickle Charge Design and Application Notes

04-05 05 06 03 10 09 08 09 20

Linear Charger + Regulators

USB

AC/DC

Linear Charger and Regulator

To System Loads VOUT2 VOUT3 Batt

Lithium

On-chip Regulators/ComparatorsDesign and Application Notes

07 20

Pulse ChargerVIN Pulse Charger Batt

Lithium

Pulse Design and Application Notes

13 20

Switchmode Monolithic Charger

LithiumVIN Switching Monolithic Charger Batt

NiMH NiCd Lead-Acid Multi-Chemistry

Switchmode Buck Switchmode Buck-Boost Switchmode Thermistor Li-Ion Charge Termination IC Design and Applications Notes

14-15 13 11 17 20

Switchmode Controller Charger

VIN Switching Controller Charger Batt

Lithium NiMH NiCd Lead-Acid Multi-Chemistry

Switchmode Buck Switchmode Buck-Boost Switchmode Thermistor Design and Applications Notes

14-15 13 11 20

Switchmode Smart Battery Charger

LithiumVIN

NiMH NiCd Lead-Acid Multi-ChemistrySmart Battery Charger SPI SMBUS I/O

Smart Battery Chargers SBS Design and Applications Notes

11-12 20

Batt

Other

Other Battery Charger Related Devices

03, 16, 17

02

NiMH & NiCd

NiMH and NiCd Fast Battery ChargersLTC4060: Standalone 2A Linear NiMH/NiCd Fast Battery Charger LTC4010: High Efficiency 4A Standalone Switchmode Battery Charger Linear Technologys nickel battery chargers reduce component count, speed design and allow fast, reliable charging of both NiMH and NiCd chemistry cells.5.5 < VIN < 34V 4.5 < VIN < 10V No Microcontroller No Firmware LTC4060 Load Charge Current Program NiMH NiCd Up to 4 Cells Up to 4A Battery Charger No Microcontroller No Firmware

LTC4011: Actual Size, Complete Solution

Load

LTC4010

NiMH NiCd Up to 16-Cell

Battery Cells* Part No. Topology(series)

Max Charge Current

Input Voltage

Onboard Charge Termination

Integrated Pass Transistor

End-ofCharge Signal

AC Present Signal

Thermistor Interface

Package

NiMH / NiCd Battery Chargers Standalone LTC4060 LTC4010 LTC4011 Linear Synchronous Step Down Synchronous Step Down 14 1 16 1 16 2A 4A 4A 4.5 10V 4.5 34V 4.5 34V -dV, t, V, T -dV, dT/dt, T, t -dV, dT/dt, T, t

I I I

I I I

I I I

DFN-16, TSSOP-16 TSSOP-16 TSSOP-20

NiMH / NiCd Battery Chargers Non-Standalone LT1512 LT1510 LT1513 LT1769 LT1511 LTC4008 LT1505 SEPIC Step Down SEPIC Step Down Step Down Synchronous Step Down Synchronous Step Down 1 18 1 12 1 18 1 12 1 12 4 18 1 13 0.8A 1A 1.6A 2A 3A 4A 8A 2.4 29V 7 29V 2.4 29V 7 29V 7 29V 6 28V 6.7 26V External, C External, C External, C External, C External, C External, C External, C

I I I I I

SO-8 SO-8, SSOP-16, SO-16 DD Pak, TO-220 TSSOP-20, SSOP-28 SO-24 SSOP-28 SSOP-28

I I

I

NiMH / NiCd Battery Chargers Smart Chargers LTC4100 LTC1759 LTC1960 Step Down Step Down Step Down 1 13 1 13 4 16 4A 8A 8A 6 28V 11 24V 6 28V External, C, SMBus External, C, SMBus External, C, SPI

I I

I I

SSOP-24 SSOP-36 SSOP-36

*Based on Maximum Cell Voltage of 1.8V

P O W E R PAT H C O N T R O L

IDEAL DIODES

03

Battery Chargers with PowerPath ControlLTC4055: USB Power Controller and Li-Ion Battery Charger Linear Technologys PowerPath products and architectures allow the load to be powered from both VIN and the battery, ensuring shorter charging times and more flexibility for the portable device designer. They also enable instant on in systems with a depleted battery.Wall Adapter IN1 IN2Input Charger ControlCurrent Limit Control Output Charger ControlIdeal

VBUS

OUTLoad

BAT WALL

+

Li-Ion Battery

1V

UVLO

Part No.

Max. Charge Current

Input Voltage

RDS (ON)

of Ideal Diode

Standby Current

IBAT Drain Current

Standalone

Onboard Charge Thermal Termination Regulation

Integrated Transistor

Package

USB Power Managers and Li-Ion Linear Battery Chargers with PowerPath Control LTC4055 LTC4066 LTC4085 LTC4089/-1 1.25A 1.5A 1.5A 1.5A 4.3 5.5V 4.35 5.5V 4.35 5.5V 4.35 5.5V 200m 50m 200m (

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