BQ24610 Stand-alone synchronous switch-mode Li-ion or Li-polymer battery charger with 5V–28V VCC input | TI.com

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 ICs Email Download to Excel
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)
BQ24610 Order now 1
2
3
4
5
6    
Charger     Li-Ion/Li-Polymer     10     5     28     33     2.1     26     IINDPM
OVP
Power Path
Temp Monitoring (Thermistor Pin)
UVLO    
Standalone (RC-Settable)     Switch-Mode Buck     Catalog     -40 to 85     VQFN | 24     24VQFN: 16 mm2: 4 x 4 (VQFN | 24)    
BQ24600 Order now 1
2
3
4
5
6    
Charger     Li-Ion/Li-Polymer     10     5     28     33     2.1     26     Power Path
Temp Monitoring (Thermistor Pin)
UVLO    
Standalone (RC-Settable)     Switch-Mode Buck     Catalog     -40 to 85     VQFN | 16     16VQFN: 12 mm2: 3.5 x 3.5 (VQFN | 16)    
BQ24616 Order now 1
2
3
4
5
6    
Charger     Li-Ion/Li-Polymer     10     5     28     33     2.1     26     IINDPM
JEITA BAT Temp Monitoring (Thermistor Pin)
Power Path    
Standalone (RC-Settable)     Switch-Mode Buck     Catalog     -40 to 85     VQFN | 24     24VQFN: 16 mm2: 4 x 4 (VQFN | 24)    
BQ24617 Order now 1
2
3
4
5    
Charger     Li-Ion/Li-Polymer     10     5     24     33     2.1     22     IINDPM
Power Path
Temp Monitoring (Thermistor Pin)    
Standalone (RC-Settable)     Switch-Mode Buck     Catalog     -40 to 85     VQFN | 24     24VQFN: 16 mm2: 4 x 4 (VQFN | 24)    
BQ24618 Order now 1
2
3
4
5
6    
Charger     Li-Ion/Li-Polymer     10     4.7     28     33     2.1     26     IINDPM
Power Path
Temp Monitoring (Thermistor Pin)    
Standalone (RC-Settable)     Switch-Mode Buck     Catalog     -40 to 85     VQFN | 24     24VQFN: 16 mm2: 4 x 4 (VQFN | 24)    
BQ24620 Order now 1
2
3
4
5
6
7    
Charger     Lithium Phosphate/LiFePO4     10     5