STEVAL-ISB006V1 Dual USB/wall adapter Li-ion battery charger with gas gauge based on STw4102
The STEVAL-ISB006V1 demonstration board is based on the STw4102, a stand-alone constantcurrent constant-voltage (CCCV) linear charger dedicated for Li-Ion battery. This device allows dual charging capability using the main input adaptor up to 1A (wall adaptor, car adaptor) or USB cable up to 500 mA without external component. Upper 1 A charging is possible by adding just one external transistor. This demonstration board offers programmable fast charge current up to 1A with external resistor. A thermal regulation circuitry limits the charge current against the die high power dissipation or high ambient temperature. An end of charge output pin indicates the charge termination when the fast charge current drops below 10% of the programmed current value. The STw4102 contains an accurate gas gauge based on a 13 bit AD converter. External resistor is used between battery and ground to sense a charge/discharge current. With a typical 30 m Ω resistor, current can be up to 2.5 A.
技术特性
- Constant current constant voltage (CCCV) charger
- Dual charging source (main adaptor or USB cable)
- Fast charge current control up to 1A for main adaptor and up to 500 mA for USB
- Internal power device and sense resistor, option for external components for current higher than 1A
- Programmable charge voltage (4.1 V, 4.2 V, 4.3 V, 4.35 V) with 1% accuracy
- Thermal regulation
- Trickle charge mode at low battery voltage
- Main adaptor voltage up to 16 V
- Battery overvoltage protection at 4.7 V
- Gas gauge with 13 bit AD converter
- Battery voltage monitor with 7-12 bit ADC
- I²C interface for device monitoring and control
- Charge status output pin
- Power detection output pin
- Programmable watchdog security timer
- 4.7 V LDO regulator (external MOSFET)
| 功能框图
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STEVAL-ISB006V1 订购信息
| 订购型号 |
产品状态 |
美金价格 |
数量 |
封装 |
包装形式 |
温度范围 |
材料声明 |
| STEVAL-ISB006V1 |
Active |
|
1000 |
|
|
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DATA BRIEF
| 描述 |
版本 |
大小 |
| STEVAL-ISB006V1 : DB0742: Dual USB/wall adapter Li-Ion battery charger with gas gauge demonstration board based on the STw4102 |
1 |
142KB |
APPLICATION NOTES
| 描述 |
版本 |
大小 |
| AN2390: A flexible universal battery charger |
1 |
573KB |
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