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BQ24308

ACTIVE

Overvoltage and Overcurrent Protection IC

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Data sheet

BQ24308

ACTIVE
Data sheet Order now

Product details

Function Charger Front-End Protection Number of series cells (min) 1 Number of series cells (max) 1 Features LDO output, Overcurrent protection, Overvoltage Operating current (typ) (µA) 410 Rating Catalog Vin (max) (V) 30 Overvoltage protection 6.3 Operating temperature range (°C) 0 to 125 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 LDO output, Overcurrent protection, Overvoltage Operating current (typ) (µA) 410 Rating Catalog Vin (max) (V) 30 Overvoltage protection 6.3 Operating temperature range (°C) 0 to 125 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
    • Input Overcurrent with Current Limiting
    • Battery Overvoltage
  • Maximum Input Voltage of 30 V
  • Supports Up to 1.5-A Input Current
  • Robust Against False Triggering Due to Current
    Transients
  • Thermal Shutdown
  • LDO Mode Voltage Regulation of 5 V
  • Available in Space-Saving Small 2 mm × 2 mm 8-
    Pin WSON Package
  • APPLICATIONS
    • Mobile and Smart Phones
    • PDAs
    • MP3 Players
    • Low-Power Handheld Devices
    • Bluetooth™ Headsets

All other trademarks are the property of their respective owners
  • Provides Protection for Three Variables:
    • Input Overvoltage
    • Input Overcurrent with Current Limiting
    • Battery Overvoltage
  • Maximum Input Voltage of 30 V
  • Supports Up to 1.5-A Input Current
  • Robust Against False Triggering Due to Current
    Transients
  • Thermal Shutdown
  • LDO Mode Voltage Regulation of 5 V
  • Available in Space-Saving Small 2 mm × 2 mm 8-
    Pin WSON Package
  • APPLICATIONS
    • Mobile and Smart Phones
    • PDAs
    • MP3 Players
    • Low-Power Handheld Devices
    • Bluetooth™ Headsets

All other trademarks are the property of their respective owners

The bq24308 device is a highly integrated circuit (IC) designed to provide protection to Li-ion batteries from failures of the charging circuit. The device continuously monitors the input voltage, the input current, and the battery voltage. In case of an input overvoltage condition, the device 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 to a safe value for a blanking duration before turning the switch off. Battery voltage may also be monitored and if the battery voltage exceeds the specified value the internal switch is turned off. Additionally, the device also monitors its own die temperature and switches off if it becomes too hot.

The input overcurrent threshold can be increased using an external resistor. The device also offers optional protection against reverse voltage at the input using an external P-channel FET.

The bq24308 device is a highly integrated circuit (IC) designed to provide protection to Li-ion batteries from failures of the charging circuit. The device continuously monitors the input voltage, the input current, and the battery voltage. In case of an input overvoltage condition, the device 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 to a safe value for a blanking duration before turning the switch off. Battery voltage may also be monitored and if the battery voltage exceeds the specified value the internal switch is turned off. Additionally, the device also monitors its own die temperature and switches off if it becomes too hot.

The input overcurrent threshold can be increased using an external resistor. The device also offers optional protection against reverse voltage at the input using an external P-channel FET.
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Type Title Date
* Data sheet bq24308 Overvoltage and Overcurrent Protection IC and Li+ Charger Front-End Protection IC datasheet (Rev. B) PDF | HTML 10 Jun 2015
EVM User's guide bq2430x/1x DSG EVM (HPA245) for Li+ Charger Front End Protection IC (Rev. B) 04 Nov 2016

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WSON (DSG) 8 Ultra Librarian
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