ht45f4ma / ht45fh4ma-1 / ht45f4n power bank … · provides the battery with over discharge current...

HT45F4MA/HT45FH4MA-1/HT45F4N Power Bank Solution Selection Guide

1

HT45F4MA / HT45FH4MA-1 / HT45F4N Power Bank Solution Selection Guide

D/N: AN0333E

Introduction

With the rapid development of the global economy and the improvement of people’s living

standards, there has been a profusion of portable electronic products, such as laptops,

tablet computers, mobile phones, digital cameras, camcorders, portable DVDs, PDAs,

MP3 players, GPS devices, health care devices, etc., most of which require a battery

power supply. But because of the battery’s limited capacity, the amount of usage time

provided is often far from ideal. Batteries can run out of energy at the critical moments

when they are required for important applications. It is quite impractical to have a

separate power bank supply for every portable device in one’s possession, however a

common backup supply can resolve this problem.

Holtek has designed a series of power management MCU devices especially for power

bank supply applications, providing the required functions for charging buck PWM control,

discharging boost PWM control and power display management.

Main Specification

The various products are classified into the following types according to the number of

output ports and the maximum output current.

Output Type Charging

Current

Max. Output

Current

Battery

ConnectionPower Display IC Type/Package

Singe-port 1A 1A 1A Parallel General LED

(4~5 Segments) HT45F4MA / 16NSOP

Dual-port 2A 1.5A~2A 2A Parallel General LED

(4~5 Segments) HT45F4MA / 20SSOP

Dual-port 2A 1.5A~2A 2A Parallel 2-bit LCD HT45F4N / 28SSOP

Dual-port 2A 1.5A~2A 2A Parallel 2-bit 7-Seg Display HT45F4N / 28SSOP

Dual-port 3A 1.5A~2A 3A Parallel General LED

(4~5 Segments) HT45FH4MA-1 / 20SSOP

Dual-port 3A 1.5A~2A 3A 2 Series General LED

(4~5 Segments) HT45FH4MA-1 / 20SSOP


2

Product Specification Detail Description

Single-port 1A Single Lithium Battery Mobile Power Solutions

Product Specification Detail Description

Product Features

Battery Type: single lithium battery (the lithium battery can be used in parallel

according to the product capacity)

4 segments LED power display – GPIO driving directly - without an external transistor

High brightness flashlight function - GPIO driving directly - without an external

transistor

After auto-detect mobile phones/tablet computers connect, auto-start discharging

boost control

After auto-detect charger connect, auto-start charging buck control

Total device idle current consumption: under 10µA (total circuit current consumption,

excluding the battery consumption)

Discharge conversion efficiency: 91% (Max.)

Output Ripple: 100mV (peak to peak), test condition: output 5V/1A When boost discharging, the PCB surface maximum temperature: under 55℃, test

condition: output 5V/1A, battery voltage 3.15V

Protection mechanism

Provides the battery with over discharge current protection during discharging

Provides the battery with over discharge voltage protection during discharging

Provides the input port with over charge voltage protection during charging

Provides the battery with over charge current protection during charging

Three-stage Charging Buck Control Management

Auto-detect charger supply capacity limit

Low current charging

Battery voltage under 3.0V

Constant current 100mA

Constant current charging

Battery voltage: 3.0V~4.2V


Constant voltage charging

Constant voltage 4.2V

When the charging current is under 100mA, stop charging

Discharging Boost Control Management

Constant voltage discharging

Constant voltage output: 5.0V

When the battery voltage is under 3.0V, stop discharging

Output port total output current 1.3A (Max.)

When the total output current is lower than 0.1A, enter the sleep mode automatically

Note: the above values which are underlined in red font can be modified by the software

according to the product requirements.


3

Single-port 1A Single Lithium Battery Mobile Power Solution Recommended

Circuit

Dual-port 2A Single Lithium Battery Mobile Power Solution Product

Specification Detail Description

Product Features



4 segments LED power display - GPIO driving directly - without an external transistor


transistor


boost control













4







Battery voltage 3.0V~4.2V







Constant voltage output 5.0V




1A output port constant current 1A / 5V constant voltage auto on/off

1A output port output current 1.3A (Max.)




Dual-port 2A Single Lithium Battery Mobile Power Solution Recommended Circuit


5

Dual-port 2A LCD Screen Single Lithium Battery Mobile Power

Solution Product Specification Detail Description

Product Features



Internal SCOM4 driving the LCD screen directly, without the extra controller

LCD screen display 3 digits power capacity (0~100%)

LCD screen display 1A port with or without mobile phones/tablet computers connect

LCD screen display 2A port with or without mobile phones/tablet computers connect

LCD screen display with or without charger connect


transistor


boost control

































according to the product requirements


6

Dual-port 2A LCD Screen Single Lithium Battery Mobile Power Solution

Recommended Circuit

Dual-port 2A / 2-bit Digital Tube Single Lithium Battery Mobile

Power Solution Product Specification Detail Description

Product Features



2-bit digital tube display power capacity (0~99%) - GPIO driving directly - without an

external transistor


transistor


boost control





Output Ripple: 150mV (peak to peak) , test condition: output 5V/2A When boost discharging, the PCB surface maximum temperature: under 65℃, test








7























Dual-port 2A / 2-bit Digital Tube Single Lithium Battery Mobile Power Solution

Recommended Circuit


8

Dual-port 3A Single Lithium Battery Mobile Power Solution Product


Product Features





transistor


boost control


















Battery voltage: 3.0V~4.2V







Constant voltage output: 5.0V










9

Dual-port 3A Single Lithium Battery Mobile Power Solution Recommended Circuit

Dual-port 3A Double Lithium Battery Mobile Power Solution Product


Product Features

Battery Type: double lithium battery (the lithium battery can be used in series according

to the product capacity)



transistor


boost control





Output Ripple: 200mV (peak to peak), test condition: output 5V/3A When boost discharging, the PCB surface maximum temperature: under 60℃, , test








10

Three-stage Charging Boost Control Management











Discharging Buck Control Management











Dual-port 3A Double Lithium Battery Mobile Power Solution Recommended Circuit


11

Conclusion

As can be seen from this application note, Holtek has released a range of MCU devices

for mobile charging applications aimed at the mobile low, middle and high-end market and

has also provided recommended circuits as well as technology support to customers.

This support should enable customers to shorten their development times. Since this

series of power management MCUs are Flash type devices, customers can easily modify

their software parameter settings according to their own specifications. Therefore,

compared with the general range of products provided in a highly competitive market,

these products can offer differentiated and personalised features providing enhanced

product competitiveness and excellent performance.

ht45f4ma / ht45fh4ma-1 / ht45f4n power bank … · provides the battery with over discharge current...

Documents