750 mA Single Chip Li-Ion/Li-Pol Charge Management IC with Thermal Regulation - BQ24088

BQ24088 (ACTIVE)

750 mA Single Chip Li-Ion/Li-Pol Charge Management IC with Thermal Regulation

 

Description

The bq2408x series are highly integrated Li-Ion and Li-Pol linear chargers, targeted at space-limited portable applications. The bq2408x series offers a variety of protection features and functional options, while still implementing a complete charging system in a small package. The battery is charged in three phases: conditioning, constant or thermally regulated current, and constant voltage. Charge is terminated based on minimum current. An internal programmable charge timer provides a backup protection feature for charge termination and is dynamically adjusted during the thermal regulation phase. The bq2408x automatically restarts the charge if the battery voltage falls below an internal threshold; sleep mode is set when the external input supply is removed. Multiple versions of this device family enable easy design of the bq2408x in cradle chargers or in the end equipment, while using low cost or high-end AC adapters.

Features

  • Ideal for Low-Dropout Designs for Single-Cell Li-
    Ion or Li-Pol Packs in Space Limited Applications
  • Integrated Power FET and Current Sensor for up
    to 750-mA Charge Applications
  • Reverse Leakage Protection Prevents Battery
    Drainage
  • ±0.5% Voltage Regulation Accuracy
  • Thermal Regulation Maximizes Charge Rate
  • Charge Termination by Minimum Current and
    Time
  • Precharge Conditioning With Safety Timer
  • Status Outputs for LED or System Interface
    Indicate Charge, Fault, and Power Good Outputs
  • Short-Circuit and Thermal Protection
  • Automatic Sleep Mode for Low Power
    Consumption
  • Small 3×3 mm MLP Package
  • Selectable Battery Insertion and Battery Absent
    Detection
  • Input Overvoltage Protection
    • 6.5 V and 10.5 V Options

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Parametrics Compare all products in Battery Charger IC

 
Number of Series Cells
Function
Cell Chemistry
Battery Charge Voltage (Min) (V)
Battery Charge Voltage (Max) (V)
Special Features
Charge Current (Max) (A)
Control Interface
USB Feature
Rating
Operating Temperature Range (C)
Pin/Package
Operating Vin (Min) (V)
Operating Vin (Max) (V)
Absolute Vin (safety rating) (Max) ((V))
BQ24088 BQ24085 BQ24086 BQ24087
1    1    1    1   
Charger    Charger    Charger    Charger   
Li-Ion/Li-Polymer    Li-Ion/Li-Polymer    Li-Ion/Li-Polymer    Li-Ion/Li-Polymer   
4.2    4.2    4.2    4.2   
4.2    4.2    4.2    4.2   
Integrated FET
Temp Monitoring (Thermistor Pin)
Thermal Regulation   
Integrated FET
Temp Monitoring (Thermistor Pin)
Thermal Regulation   
Integrated FET
Temp Monitoring (Thermistor Pin)
Thermal Regulation   
Integrated FET
Temp Monitoring (Thermistor Pin)
Thermal Regulation   
0.75    0.75    0.75    0.75   
Standalone (RC-Settable)    Standalone (RC-Settable)    Standalone (RC-Settable)    Standalone (RC-Settable)   
N/A    N/A    N/A    N/A   
Catalog    Catalog    Catalog    Catalog   
0 to 125    0 to 125    0 to 125    0 to 125   
10VSON    10VSON    10VSON    10VSON   
4.35    4.35    4.35    4.35   
6.5    6.5    6.5    6.5   
20    20    20    20   

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