2.5A, Dual-Input, Single Cell Switchmode Li-Ion Battery Charger with Power Path - BQ24160

BQ24160 (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 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 bq2416x to power the system from a high-efficiency DC-to-DC converter while simultaneously and independently charging the battery. The charger monitors the battery current at all times and reduces the charge current when the system load requires current above the input current limit. This allows for proper charge termination and timer operation. Under normal battery charging conditions, the system voltage is approximately equal to the battery voltage, however if the battery is deeply discharged, the system voltage does not drop below 3.5V. This minimum system voltage support enables the system to run with a defective or absent battery pack and enables instant system turn-on even with a totally discharged battery or no battery. The power-path management architecture also permits the battery to supplement the system current requirements when the adapter cannot deliver the peak system currents. This enables the use of a smaller adapter. The 2.5A input current capability allows for GSM phone calls as soon as the adapter is plugged in regardless of the battery voltage. The charge parameters are programmable using the I2C interface.

The battery is charged in three phases: precharge, fast-charge constant current and constant voltage. In all charge phases, an internal control loop monitors the IC junction temperature and reduces the charge current if the internal temperature threshold is exceeded. Additionally, a voltage-based battery pack thermistor monitoring input (TS) is included that monitors battery temperature for safe charging. The TS function for bq24160, bq24160A, bq24161B, bq24163 and bq24168 is JEITA compatible.

Features

  • High-Efficiency Switch Mode Charger with Separate Power Path Control
    • Make a GSM Call with a Deeply Discharged Battery or No Battery
    • 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 Charger
  • Highly Integrated Battery N-Channel MOSFET Controller for Power Path
    Management
    • 20 V input rating, with Overvoltage Protection (OVP)
      • 6.5 V for USB Input
      • 10.5 V for IN input (bq24160, bq24160A, bq24161, bq24163)
      • 6.5 V for IN input (bq24168)
    • Integrated FETs for Up to 2.5A Charge Rate
      • Up to 2.5 A from IN Input (input current limit)
      • Up to 1.5 A from USB Input (input current limit)
  • Safe and Accurate Battery Management Functions
    • 0.5% Battery Regulation Accuracy
    • 10% Charge Current Accuracy
  • Charge Parameters Programmed Using I2C Interface
    • Charge Voltage, Current, Termination Threshold, Input Current Limit,
      VINDPM Threshold, Watchdog and Safety Timers (disabled for
      bq24160A and bq24168)
  • Voltage Based, NTC Monitoring Input
    • JEITA Compatible (bq24160, bq24160A, bq24161B, bq24163, bq24168)
  • Thermal Regulation Protection for Output Current Control
  • Low Battery Leakage Current, BAT Short-Circuit Protection
  • Soft-Start Feature to Reduce Inrush Current
  • Thermal Shutdown and Protection
  • Available in small 2.8mm × 2.8mm 49-ball WCSP or 4mm × 4mm
    VQFN-24 Packages

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Parametrics Compare all products in Battery Chargers and Front-End Solutions

 
Function
Cell Chemistry
# Series Cells
Vin (Max) (V)
Special Features
Battery Charge Voltage (V)
Charge Current (Max) (A)
Control Topology
Control Interface
Rating
Operating Temperature Range (C)
Pin/Package
Approx. Price (US$)
BQ24160 BQ24160A BQ24161 BQ24161B BQ24163 BQ24165 BQ24166 BQ24167 BQ24168
Charger     Charger     Charger     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    
Li-Ion
Li-Polymer    
Li-Ion
Li-Polymer    
 
  Single Cell     Single Cell     Single Cell     Single Cell     Single Cell     Single Cell        
10     10     10     10     10     10     10     10     6    
Power Path     Power Path     Power Path     JEITA
Power Path    
Power Path     Power Path     Power Path     Power Path     Power Path
Temp Monitoring    
Adjustable     Adjustable     Adjustable     Adjustable     Adjustable     4.2     4.2     4.2     Adjustable    
2.5     2.5     2.5     2.5     2.5     2.5     2.5     2.5     2.5    
Switch-Mode     Switch-Mode     Switch-Mode     Switch-Mode     Switch-Mode     Switch-Mode     Switch-Mode       Switch-Mode    
I2C     I2C     I2C     I2C     I2C     I2C     I2C     I2C     I2C    
Catalog     Catalog     Catalog     Catalog     Catalog     Catalog     Catalog     Catalog     Catalog    
-40 to 85       -40 to 85     -40 to 85     -40 to 85     -40 to 85     -40 to 85     -40 to 85     -40 to 85    
24VQFN
49DSBGA    
24VQFN     24VQFN
49DSBGA    
24VQFN     24VQFN
49DSBGA    
24VQFN
49DSBGA    
24VQFN
49DSBGA    
24VQFN
49DSBGA    
24VQFN
49DSBGA    
1.95 | 1ku     1.95 | 1ku     1.95 | 1ku     1.95 | 1ku     1.95 | 1ku     1.95 | 1ku     1.95 | 1ku     1.95 | 1ku     1.95 | 1ku    
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