BQ24381是TI公司的一款电池监控,保护及认证解决方案产品，BQ24381是过压/过流保护 IC 和锂离子充电器前端保护 IC，具有 LDO 模式、7.1 OVP，本页介绍了BQ24381的产品说明、应用、特性等，并给出了与BQ24381相关的TI元器件型号供参考。
BQ24381 - 过压/过流保护 IC 和锂离子充电器前端保护 IC，具有 LDO 模式、7.1 OVP - 电池监控,保护及认证解决方案 - 电池管理产品 - TI公司（Texas Instruments，德州仪器）
- Input Overvoltage Protection
- Accurate Battery Overvoltage Protection
- Output Short-Circuit Protection
- Soft-Start to Prevent Inrush Currents
- Soft-Stop to Prevent Voltage Spikes
- Maximum Input Voltage of 30 V
- Supports up to 1.7-A Load Current
- Thermal Shutdown
- Enable Function
- Fault Status Indication
- Small 2 mm × 2 mm 8-Pin WSON Package
- Smart Phones, Mobile Phones
- PDAs
- MP3 Players
- Low-Power Handheld Devices
The bq2438x family of devices are charger front-end integrated circuits (ICs) designed to provide protection to Li-ion batteries from failures of the charging circuit. The device continuously monitors the input voltage and battery voltage. The device operates like a linear regulator, maintaining a 5.5-V (bq24380) or 5-V (bq24381, bq24382) output with input voltages up to the Input overvoltage threshold. During input overvoltage conditions, the device immediately turns off the internal pass FET disconnecting the charging circuit from the damaging input source. Additionally, if the battery voltage rises to unsafe levels while charging, power is removed from the system. The device checks for short-circuit or overload conditions at its output when turning the pass FET on, and if it finds unsafe conditions, it switches off and then rechecks the conditions. Additionally, the device also monitors its die temperature and switches off if it exceeds 140°C.
When the device is controlled by a processor, the device provides status information about fault conditions to the host.
| PART NUMBER | PACKAGE | BODY SIZE (NOM) |
|---|---|---|
| bq24380 | WSON (8) | 2.00 mm × 2.00 mm |
| bq24381 | ||
| bq24382 |
