1-A, Single Chip, Li-Ion and Li-Pol Automotive Charger - BQ24081-Q1

BQ24081-Q1 (ACTIVE)

1-A, Single Chip, Li-Ion and Li-Pol Automotive Charger

 

Description

The bq24080-Q1 and bq24081-Q1 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.

Features

  • 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
Function
Cell Chemistry
Input Over-Voltage Protection (V)
Special Features
Battery Charge Voltage (V)
Charge Current (Max) (A)
Control Interface
Rating
Operating Temperature Range (C)
Pin/Package
Operating Vin (Min) (V)
Operating Vin (Max) (V)
Absolute Vin (safety rating) (Max) ((V))
BQ24081-Q1 BQ24030-Q1 BQ24031-Q1 BQ24075-Q1 BQ24105-Q1 BQ25071-Q1
1    1    1    1    1
2
3   
1   
Charger    Charger    Charger    Charger    Charger    Charger   
Li-Ion/Li-Polymer    Li-Ion/Li-Polymer    Li-Ion/Li-Polymer    Li-Ion/Li-Polymer    Li-Ion/Li-Polymer    LiFePO4   
      6.6      10.5   
Integrated FET
Temp Monitoring (Thermistor Pin)   
Integrated LDO
Power Path
Temp Monitoring (Thermistor Pin)   
Integrated LDO
Power Path
Temp Monitoring (Thermistor Pin)   
Power Path
Temp Monitoring (Thermistor Pin)
Vin DPM (OK for Solar Power Source)   
Integrated FET
Temp Monitoring (Thermistor Pin)   
Integrated LDO
Power Path
Thermal Regulation   
4.2 (Fixed)    4.2 (Fixed)    4.1 (Fixed)    4.2 (Fixed)    Adjustable    3.5 (Fixed)   
1    1.5    1.5    1.5    2    1   
Standalone (RC-Settable)    Standalone (RC-Settable)    Standalone (RC-Settable)    Standalone (RC-Settable)    Standalone (RC-Settable)    Standalone (RC-Settable)   
Automotive    Automotive    Automotive    Automotive    Automotive    Automotive   
-40 to 125    -40 to 85    -40 to 85    -40 to 125    -40 to 85    -40 to 125   
10VSON    20VQFN    20VQFN    16QFN    20VQFN    10WSON   
4.5    4.35    4.35    4.35    4.35    3.75   
6.5    16    16    6.4    16    8   
7    18    18    28    20    30   

Other qualified versions of BQ24081-Q1

Version Part Number Definition
Catalog BQ24081 TI's standard catalog product

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