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電池管理 IC
電池保護器

BQ24351

現行

具整合式充電 FET 的過電壓和過電流充電器前端保護 IC

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產品規格表

BQ24351

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 Integrated Charging FET, Overcurrent protection, Overvoltage, Short-circuit Discharge (SCD) Operating current (typ) (µA) 400 Rating Catalog Vin (max) (V) 30 Overvoltage protection 10.5 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 Integrated Charging FET, Overcurrent protection, Overvoltage, Short-circuit Discharge (SCD) Operating current (typ) (µA) 400 Rating Catalog Vin (max) (V) 30 Overvoltage protection 10.5 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
  • Robust Protection
    • Input Over-Voltage Protection
    • Input Over-Current Protection
    • Accurate Battery Over-Voltage Protection
    • Thermal Shutdown
    • Output Short-Circuit Protection
  • Integrated Charging FET
  • 10.5V Over-Voltage Protection
  • LDO Mode Operation
    • 6.38V Output Voltage Regulation
  • Current Limited Power Supply for Host Controller
  • Soft-Start to Prevent Inrush Currents
  • Soft-Stop to Prevent Voltage Spikes
  • 30V Maximum Input Voltage
  • Supports Up to 1A Load Current
  • Small 2mm × 2mm 8pin SON Package
  • APPLICATIONS
    • Mobile Phones
    • Low-Power Handheld Devices
  • Robust Protection
    • Input Over-Voltage Protection
    • Input Over-Current Protection
    • Accurate Battery Over-Voltage Protection
    • Thermal Shutdown
    • Output Short-Circuit Protection
  • Integrated Charging FET
  • 10.5V Over-Voltage Protection
  • LDO Mode Operation
    • 6.38V Output Voltage Regulation
  • Current Limited Power Supply for Host Controller
  • Soft-Start to Prevent Inrush Currents
  • Soft-Stop to Prevent Voltage Spikes
  • 30V Maximum Input Voltage
  • Supports Up to 1A Load Current
  • Small 2mm × 2mm 8pin SON Package
  • APPLICATIONS
    • Mobile Phones
    • Low-Power Handheld Devices

The bq24351 is a highly integrated circuit designed to provide protection to Li-ion batteries from failures of the charging circuit. The IC continuously monitors the input voltage and the battery voltage. In case of an input over-voltage condition, the IC will turn off the internal power FET after a blanking time. If the battery voltage rises to unsafe levels during charging process, power is removed from the system. If the input current exceeds the over current threshold for a limited time, the IC will turn off the output power. The integrated charging FET can regulate the charge voltage and current according to the control from the host. The device can also provide a voltage source with over voltage and over current protection for host controller.

The bq24351 is a highly integrated circuit designed to provide protection to Li-ion batteries from failures of the charging circuit. The IC continuously monitors the input voltage and the battery voltage. In case of an input over-voltage condition, the IC will turn off the internal power FET after a blanking time. If the battery voltage rises to unsafe levels during charging process, power is removed from the system. If the input current exceeds the over current threshold for a limited time, the IC will turn off the output power. The integrated charging FET can regulate the charge voltage and current according to the control from the host. The device can also provide a voltage source with over voltage and over current protection for host controller.
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* Data sheet OVER-VOLTAGE AND OVER-CURRENT CHARGER FRONT-END PROTECTION IC datasheet (Rev. A) 2010年 11月 1日
User guide bq24351 user's guide 2010年 9月 21日

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