BQ24161B 2.5A, Dual-Input, Single Cell Switchmode Li-Ion Battery Charger with Power Path* | TI.com

BQ24161B (ACTIVE)

2.5A, Dual-Input, Single Cell Switchmode Li-Ion Battery Charger with Power Path*

 

Description

The bq24160, bq24160A, bq24161, bq24161B, bq24163, and bq24168 are highly integrated single-cell Li-Ion battery charger and system power path management devices targeted for space-limited, portable applications with high-capacity batteries. The single-cell charger has dual inputs which allow operation from either a USB port or a higher-power input supply (that is, AC adapter or wireless charging input) for a versatile solution. The two inputs are fully isolated from each other and are easily selectable using the I2C interface.

The power path management feature allows the bq2416xx to power the system from a high-efficiency DC-DC converter while simultaneously and independently charging the battery. The power-path management architecture enables the system to run with a defective or absent battery pack and enables instant system turnon even with a totally discharged battery or no battery.

Features

  • High-Efficiency Switched-Mode Charger with Separate Power Path Control
    • Instantly Start Up System from a Deeply Discharged Battery or No Battery
  • Compatible with MaxLife™ Technology for Faster Charging When Used in Conjunction With bq27530
  • Dual Input, Integrated FET Charger for up to 2.5-A Charging
    • 20-V input rating, with Overvoltage Protection (OVP)
      • 6.5 V for USB Input up to 1.5 A
      • 10.5 V for IN input (bq24160, bq24160A, bq24161, bq24163) up to 2.5 A
      • 6.5 V for IN input (bq24168) up to 2.5 A
  • Safe and Accurate Battery-Management Functions
    • 1% Battery Regulation Accuracy
    • 10% Charge Current Accuracy
  • Charge Parameters Programmed Using I2C Interface
  • Voltage-Based, NTC Monitoring Input
    • JEITA Compatible (bq24160, bq24160A, bq24161B, bq24163, bq24168)
  • Available in small 2.8-mm × 2.8-mm 49-ball WCSP or 4-mm × 4-mm VQFN-24 Packages

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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)
BQ24161B Order now 1     Charger     Li-Ion/Li-Polymer     2.5     4.2     10     20     3.5     4.44     IINDPM
Integrated FET
JEITA BAT Temp Monitoring (Thermistor Pin)
OVP
Power Path
Temp Monitoring (Thermistor Pin)
UVLO    
I2C     Switch-Mode Buck     Catalog     -40 to 85     VQFN | 24     24VQFN: 16 mm2: 4 x 4 (VQFN | 24)    
BQ24160 Order now 1     Charger     Li-Ion/Li-Polymer     2.5     4.2     10     20     3.5     4.44     IINDPM
Integrated FET
JEITA BAT Temp Monitoring (Thermistor Pin)
OVP
Power Path
Temp Monitoring (Thermistor Pin)
UVLO
USB D+/D-/BC1.2    
I2C     Switch-Mode Buck     Catalog     -40 to 85     DSBGA | 49
VQFN | 24    
See datasheet (DSBGA)
24VQFN: 16 mm2: 4 x 4 (VQFN | 24)    
BQ24160A Order now 1     Charger     Li-Ion/Li-Polymer     2.5     4.2     10     20     3.5     4.44     IINDPM
Integrated FET
JEITA BAT Temp Monitoring (Thermistor Pin)
OVP
Power Path
Temp Monitoring (Thermistor Pin)
UVLO
USB D+/D-/BC1.2    
I2C     Switch-Mode Buck     Catalog       VQFN | 24     24VQFN: 16 mm2: 4 x 4 (VQFN | 24)    
BQ24161 Order now 1     Charger     Li-Ion/Li-Polymer     2.5     4.2     10     20     3.5     4.44     IINDPM
Integrated FET
OVP
Power Path
Temp Monitoring (Thermistor Pin)
UVLO    
I2C     Switch-Mode Buck     Catalog     -40 to 85     DSBGA | 49
VQFN | 24    
See datasheet (DSBGA)
24VQFN: 16 mm2: 4 x 4 (VQFN | 24)    
BQ24163 Order now 1     Charger     Li-Ion/Li-Polymer     2.5     4.2     10     20     3.5     4.44     IINDPM
Integrated FET
JEITA BAT Temp Monitoring (Thermistor Pin)
OVP
Power Path
Temp Monitoring (Thermistor Pin)
USB D+/D-/BC1.2
UVLO    
I2C     Switch-Mode Buck     Catalog     -40 to 85     DSBGA | 49
VQFN | 24    
See datasheet (DSBGA)
24VQFN: 16 mm2: 4 x 4 (VQFN | 24)    
BQ24165 Order now 1     Charger     Li-Ion/Li-Polymer     2.5     4.2     10     20     4.2