Stand-Alone Synchronous Switch-Mode Li-Ion or Li-Polymer Battery Charger with 5V–28V VCC Input - BQ24610

BQ24610 (ACTIVE)

Stand-Alone Synchronous Switch-Mode Li-Ion or Li-Polymer Battery Charger with 5V–28V VCC Input

Description

The bq2461x is a highly integrated Li-ion or Li-polymer switched-mode battery charge controller. The device offers a constant-frequency synchronous switching PWM controller with high-accuracy charge current and voltage regulation, charge preconditioning, termination, adapter current regulation, and charge status monitoring.

The bq2461x charges the battery in three phases: preconditioning, constant current, and constant voltage.

Charge is terminated when the current reaches a minimum user-selectable level. A programmable charge timer provides a safety backup. The bq2461x automatically restarts the charge cycle if the battery voltage falls below an internal threshold, and enters a low quiescent current sleep mode when the input voltage falls below the battery voltage.

Features

  • 600-kHz NMOS-NMOS Synchronous Buck
    Converter
  • Stand-Alone Charger Support for Li-Ion or Li-
    Polymer
  • 5-V to 28-V VCC Input Operating Range and
    Supports 1- to 6-Battery Cells (bq24610)
  • 5-V to 24-V VCC Input Operating Range and
    Supports 1- to 5-Battery Cells (bq24617)
  • Up to 10-A Charge Current and Adapter Current
  • High-Accuracy Voltage and Current Regulation
    • &plusm;0.5% Charge Voltage Accuracy
    • &plusm;3% Charge Current Accuracy
    • &plusm;3% Adapter Current Accuracy
  • Integration
    • Automatic System Power Selection From
      Adapter or Battery
    • Internal Loop Compensation and Soft Start
    • Dynamic Power Management
  • Safety Protection
    • Input Overvoltage Protection
    • Battery Thermistor Sense Hot and Cold
      Charge Suspend
    • Battery Detection
    • Reverse Protection Input FET
    • Programmable Safety Timer
    • Charge Overcurrent Protection
    • Battery Short Protection
    • Battery Overvoltage Protection
    • Thermal Shutdown
  • Status Outputs
    • Adapter Present
    • Charger Operation Status
  • Charge Enable Pin
  • 6-V Gate Drive for Synchronous Buck Converter
  • 30-ns Driver Dead-Time and 99.5% Maximum
    Effective Duty Cycle
  • Energy Star Low Quiescent Current Iq
    • < 15-µA Off-State Battery Discharge Current
    • < 1.5-mA Off-State Input Quiescent Current
  • APPLICATIONS
    • Netbooks, Mobile Internet Devices, and Ultra-
      Mobile PCs
    • Personal Digital Assistants (PDAs)
    • Handheld Terminals
    • Industrial and Medical Equipment
    • Portable Equipment

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Parametrics Compare all products in Battery Charger IC

 
Function
Cell Chemistry
# Series Cells
Vin (Max) (V)
Special Features
Battery Charge Voltage (V)
Charge Current (Max) (A)
Charging Control Topology
Control Interface
USB Feature
Rating
Operating Temperature Range (C)
Pin/Package
Approx. Price (US$)
BQ24610 BQ24600 BQ24617 BQ24618 BQ24620 BQ24630 BQ24640
Charger     Charger     Charger     Charger     Charger     Charger     Charger    
Li-Ion/Li-Polymer     Li-Ion/Li-Polymer     Li-Ion/Li-Polymer     Li-Ion/Li-Polymer     LiFePO4     LiFePO4      
2-4 Cells
>4 Cells
Single Cell    
2-4 Cells
>4 Cells
Single Cell    
2-4 Cells
>4 Cells
Single Cell    
2-4 Cells
>4 Cells
Single Cell    
2-4 Cells
>4 Cells
Single Cell    
   
28     28     24     28     28     28     28    
Power Path
Standard BAT Temp Monitoring    
Standard BAT Temp Monitoring     Power Path
Standard BAT Temp Monitoring    
Power Path
Standard BAT Temp Monitoring    
Standard BAT Temp Monitoring     Power Path
Standard BAT Temp Monitoring    
Standard BAT Temp Monitoring    
Adjustable     Adjustable     Adjustable     Adjustable     Adjustable     Adjustable     Adjustable    
10     10     10     10     10     10     10    
Switchmode Buck     Switchmode Buck     Switchmode Buck     Switchmode Buck         Switchmode Buck    
Standalone     Standalone     Standalone     Standalone     Standalone     Standalone     Standalone    
      USB-Friendly          
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    
24VQFN     16VQFN     24VQFN     24VQFN     16VQFN     24VQFN     16VQFN    
2.75 | 1ku     2.75 | 1ku     2.75 | 1ku     2.75 | 1ku     2.00 | 1ku     2.00 | 1ku     2.00 | 1ku    
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