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

 
# Series Cells
Function
Cell Chemistry
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$)
Operating Vin (Max) (V)
Absolute Vin (safety rating) (Max) ((V))
BQ24610 BQ24600 BQ24617 BQ24618 BQ24620 BQ24630 BQ24640
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5
6    
1
2
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4
5
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5    
1
2
3
4
5
6    
1
2
3
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7    
1
2
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Charger     Charger     Charger     Charger     Charger     Charger     Charger    
Li-Ion/Li-Polymer     Li-Ion/Li-Polymer     Li-Ion/Li-Polymer     LiFePO4     LiFePO4     LiFePO4     SuperCap    
Power Path
Temp Monitoring (Thermistor Pin)
Vin DPM (OK for Solar Power Source)    
Power Path
Temp Monitoring (Thermistor Pin)    
Power Path
Temp Monitoring (Thermistor Pin)
Vin DPM (OK for Solar Power Source)    
Temp Monitoring (Thermistor Pin)     Temp Monitoring (Thermistor Pin)     Temp Monitoring (Thermistor Pin)     Temp Monitoring (Thermistor Pin)    
Adjustable     Adjustable     Adjustable     Adjustable     Adjustable     Adjustable     Adjustable    
10     10     10     10     10     10     10    
Switching Charger     Switching Charger     Switching Charger     Switching Charger     Switching Charger     Switching Charger     Switching Charger    
Standalone (RC-Settable)     Standalone (RC-Settable)     Standalone (RC-Settable)     Standalone (RC-Settable)     Standalone (RC-Settable)     Standalone (RC-Settable)     Standalone (RC-Settable)    
    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    
28     28     28     28     28     28     28    
33     33     33     33     33     33     33    
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