BQ24081-Q1 1-A, Single Chip, Li-Ion and Li-Pol Automotive Charger | TI.com

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

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Part number Order Number of series cells Function Cell chemistry Charge current (Max) (A) Operating Vin (Min) (V) Operating Vin (Max) (V) Absolute Vin (safety rating) (Max) ((V)) Battery charge voltage (Min) (V) Battery charge voltage (Max) (V) Features Control interface Control topology Rating Operating temperature range (C) Package Group Package size: mm2:W x L (PKG)
BQ24081-Q1 Order now 1     Charger     Li-Ion/Li-Polymer     1     4.5     6.5     7     4.2     4.2     Integrated FET
Temp Monitoring (Thermistor Pin)
UVLO    
Standalone (RC-Settable)     Linear     Automotive     -40 to 125     VSON | 10     10VSON: 9 mm2: 3 x 3 (VSON | 10)    
BQ24030-Q1 Samples not available 1     Charger     Li-Ion/Li-Polymer     1.5     4.35     16     18     4.2     4.2     Integrated LDO
Power Path
Temp Monitoring (Thermistor Pin)
UVLO    
Standalone (RC-Settable)     Linear     Automotive     -40 to 85     VQFN | 20     20VQFN: 16 mm2: 3.5 x 4.5 (VQFN | 20)    
BQ24031-Q1 Samples not available 1     Charger     Li-Ion/Li-Polymer     1.5     4.35     16     18     4.1     4.1     Integrated LDO
Power Path
Temp Monitoring (Thermistor Pin)
UVLO    
Standalone (RC-Settable)     Linear     Automotive     -40 to 85     VQFN | 20     20VQFN: 16 mm2: 3.5 x 4.5 (VQFN | 20)    
BQ24075-Q1 Order now 1     Charger     Li-Ion/Li-Polymer     1.5     4.35     6.4     28     4.2     4.2     OVP
Power Path
Temp Monitoring (Thermistor Pin)
UVLO
VINDPM    
Standalone (RC-Settable)     Linear     Automotive     -40 to 125     VQFN | 16     16VQFN: 9 mm2: 3 x 3 (VQFN | 16)    
BQ24105-Q1 Samples not available 1
2
3    
Charger     Li-Ion/Li-Polymer
Lithium Phosphate/LiFePO4    
2     4.35     16     20     2.1     15.5     Integrated FET
OVP
Temp Monitoring (Thermistor Pin)    
Standalone (RC-Settable)     Switch-Mode Buck     Automotive     -40 to 85     VQFN | 20     20VQFN: 16 mm2: 3.5 x 4.5 (VQFN | 20)    
BQ25071-Q1 Order now 1     Charger     Lithium Phosphate/LiFePO4     1     3.75     8     30     3.5     3.5     OVP
Thermal Regulation
UVLO    
Standalone (RC-Settable)     Linear