BQ24300
- Provides Protection for Three Variables:
- Input Overvoltage
- Input Overcurrent with Current Limiting
- Battery Overvoltage
- 30V Maximum Input Voltage
- Optional Input Reverse Polarity Protection
- High Immunity Against False Triggering Due to Voltage Spikes
- Robust Against False Triggering Due to Current Transients
- Thermal Shutdown
- Enable Function
- Small 2 mm × 2 mm 8-Pin SON Package
- LDO Mode Voltage Regulation Options:
- 5.5V on bq24300
- 4.5V on bq24304
- 5.0V on bq24305
- APPLICATIONS
- Bluetooth Headsets
- Low-Power Handheld Devices
The bq24300 and bq24304 are highly integrated circuits designed to provide protection to Li-ion batteries from failures of the charging circuit. The IC continuously monitors the input voltage, the input current, and the battery voltage. The device operates like a linear regulator: for voltages up to the Input Overvoltage threshold, the output is held at 5.5V (bq24300), 5.0V (bq24305) or 4.5V (bq24304). In case of an input overvoltage condition, if the overvoltage condition persists for more than a few microseconds, the IC removes power from the charging circuit by turning off an internal switch. In the case of an overcurrent condition, it limits the current to a safe value for a blanking duration before turning the switch off. Additionally, the IC also monitors its own die temperature and switches off if it becomes too hot.
The IC also offers optional protection against reverse voltage at the input with an external P-channel MOSFET.
技術文件
類型 | 標題 | 日期 | ||
---|---|---|---|---|
* | Data sheet | Overvoltage and Overcurrent Protection IC & Li+ Charger Front-End Protection IC datasheet (Rev. C) | 2009年 12月 4日 | |
EVM User's guide | bq2430x/1x DSG EVM (HPA245) for Li+ Charger Front End Protection IC (Rev. B) | 2016年 11月 4日 | ||
Analog Design Journal | Battery-charger front-end IC improves charging-system safety | 2008年 5月 16日 | ||
Application note | How to Meet 24V Hot Plug-In Test for Charge Front-End bq243xx | 2008年 1月 2日 | ||
Application note | High Voltage Pulse Transient Safety Design fro bq243xx | 2007年 12月 4日 |
設計與開發
如需其他條款或必要資源,請按一下下方的任何標題以檢視詳細頁面 (如有)。
TIDA-00034 — 過電壓和過電流保護 IC 及鋰電池充電器前端保護 IC 參考設計
封裝 | 引腳 | 下載 |
---|---|---|
WSON (DSG) | 8 | 檢視選項 |
訂購與品質
- RoHS
- REACH
- 產品標記
- 鉛塗層/球物料
- MSL 等級/回焊峰值
- MTBF/FIT 估算值
- 材料內容
- 資格摘要
- 進行中可靠性監測
- 晶圓廠位置
- 組裝地點
建議產品可能具有與此 TI 產品相關的參數、評估模組或參考設計。