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電池管理 IC
電池保護器

BQ24314

現行

具 30V (最大值) Vin 和 5.85V OVP 的充電器前端保護 IC

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BQ24314C 現行 過電壓和過電流保護 IC 和鋰離子充電器前端保護 IC Newer version of the device with improved reverse current protection

BQ24314

現行
產品規格表 立即訂購

產品詳細資料

Function Charger Front-End Protection Number of series cells (min) 1 Number of series cells (max) 1 Features Overcurrent protection, Overvoltage Operating current (typ) (µA) 400 Rating Catalog Vin (max) (V) 30 Overvoltage protection 5.85 Operating temperature range (°C) -40 to 85 Battery overvoltage protection (min) (V) 4.35 Battery overvoltage protection (max) (V) 4.35
Function Charger Front-End Protection Number of series cells (min) 1 Number of series cells (max) 1 Features Overcurrent protection, Overvoltage Operating current (typ) (µA) 400 Rating Catalog Vin (max) (V) 30 Overvoltage protection 5.85 Operating temperature range (°C) -40 to 85 Battery overvoltage protection (min) (V) 4.35 Battery overvoltage protection (max) (V) 4.35
WSON (DSG) 8 4 mm² 2 x 2
  • Provides Protection for Three Variables:
    • Input Overvoltage, With Rapid Response in
      < 1 µs
    • User-Programmable Overcurrent With Current
      Limiting
    • Battery Overvoltage
  • 30-V Maximum Input Voltage
  • Supports up to 1.5-A Input Current
  • Robust Against False Triggering Due to Current
    Transients
  • Thermal Shutdown
  • Enable Input
  • Status Indication – Fault Condition
  • Available in Space-Saving Small 8-Pin 2 × 2 SON
    and 12-Pin 4 × 3 SON Packages
  • Provides Protection for Three Variables:
    • Input Overvoltage, With Rapid Response in
      < 1 µs
    • User-Programmable Overcurrent With Current
      Limiting
    • Battery Overvoltage
  • 30-V Maximum Input Voltage
  • Supports up to 1.5-A Input Current
  • Robust Against False Triggering Due to Current
    Transients
  • Thermal Shutdown
  • Enable Input
  • Status Indication – Fault Condition
  • Available in Space-Saving Small 8-Pin 2 × 2 SON
    and 12-Pin 4 × 3 SON Packages

The bq24314 and bq24316 devices 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. In case of an input overvoltage condition, the IC immediately removes power from the charging circuit by turning off an internal switch. In the case of an overcurrent condition, it limits the system current at the threshold value, and if the overcurrent persists, switches the pass element OFF after a blanking period. Additionally, the IC also monitors its own die temperature and switches off if it becomes too hot. The input overcurrent threshold is user-programmable.

The IC can be controlled by a processor and also provides status information about fault conditions to the host.

The bq24314 and bq24316 devices 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. In case of an input overvoltage condition, the IC immediately removes power from the charging circuit by turning off an internal switch. In the case of an overcurrent condition, it limits the system current at the threshold value, and if the overcurrent persists, switches the pass element OFF after a blanking period. Additionally, the IC also monitors its own die temperature and switches off if it becomes too hot. The input overcurrent threshold is user-programmable.

The IC can be controlled by a processor and also provides status information about fault conditions to the host.
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類型 標題 日期
* Data sheet bq2431x Overvoltage and Overcurrent Protection IC and Li+ Charger Front-End Protection IC datasheet (Rev. D) PDF | HTML 2016年 4月 29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
EVM User's guide bq24314/6 DSJ EVM (HPA251) for Li+ Charger Front End Protection IC 2007年 8月 20日

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