1-cell Li-Ion Charger w/ 1-A FET, AC Present and Charge Enable - BQ24080

BQ24080 (ACTIVE)

1-cell Li-Ion Charger w/ 1-A FET, AC Present and Charge Enable



The bq24080 and bq24081 are highly integrated and flexible Li-Ion linear charge devices targeted at space-limited charger applications. They offer an integrated power FET and current sensor, high-accuracy current and voltage regulation, charge status, and charge termination, in a single monolithic device. An external resistor sets the magnitude of the charge current.

The device charges the battery in three phases: conditioning, constant current, and constant voltage. Charge is terminated based on minimum current. An internal charge timer provides a backup safety for charge termination. The device automatically restarts the charge if the battery voltage falls below an internal threshold. The device automatically enters sleep mode when the ac adapter is removed.


  • Integrated Power FET and Current Sensor for
    Up to 1-A Charge Applications From AC Adapter
  • Precharge Conditioning With Safety Timer
  • Charge and Power-Good Status Output
  • Automatic Sleep Mode for Low Power Consumption
  • Integrated Charge-Current Monitor
  • Fixed 7-Hour Fast Charge Safety Timer
  • Ideal for Low-Dropout Charger Designs for
    Single-Cell Li-Ion or Li-Pol Packs in
    Space-Limited Portable Applications
  • Small 3-mm × 3-mm SON Package

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Parametrics Compare all products in Battery Charger IC

# Series Cells
Cell Chemistry
Special Features
Battery Charge Voltage (V)
Charge Current (Max) (A)
Control Interface
Operating Temperature Range (C)
Operating Vin (Min) (V)
Operating Vin (Max) (V)
Absolute Vin (safety rating) (Max) ((V))
BQ24080 BQ24081 BQ24083
1    1    1   
Charger    Charger    Charger   
Li-Ion/Li-Polymer    Li-Ion/Li-Polymer    Li-Ion/Li-Polymer   
Integrated FET
Temp Monitoring (Thermistor Pin)   
Integrated FET
Temp Monitoring (Thermistor Pin)   
Integrated FET
Temp Monitoring (Thermistor Pin)
Thermal Regulation   
4.2 (Fixed)    4.2 (Fixed)    4.2 (Fixed)   
1    1    1   
Standalone (RC-Settable)    Standalone (RC-Settable)    Standalone (RC-Settable)   
Catalog    Catalog    Catalog   
-40 to 85    -40 to 85    -40 to 125   
10VSON    10VSON    10VSON   
4.5    4.5    4.5   
6.5    6.5    6.5   
7    7    7   

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