BQ24616 JEITA Compatible Stand-Alone Synchronous Switch-Mode Li-Ion or Li-Polymer Battery Charger | TI.com

BQ24616 (ACTIVE)

JEITA Compatible Stand-Alone Synchronous Switch-Mode Li-Ion or Li-Polymer Battery Charger

 

Description

The bq2461x device is a highly integrated, Japan Electronic Information Technology Association (JEITA) guideline-compatible, 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

  • Battery Thermistor Sense for JEITA Guideline
    Compatible Charger
  • 600-kHz NMOS-NMOS Synchronous Buck
    Converter
  • Stand-Alone Charger Support for Li-Ion or Li-
    Polymer
  • 5-V–28-V VCC Input Operating Range and
    Supports 1 to 6 Battery Cells
  • Up to 10-A Charge Current and Adapter Current
  • High-Accuracy Voltage and Current Regulation
    • ±0.5% Charge Voltage Accuracy
    • ±3% Charge Current Accuracy
    • ±3% Adapter Current Accuracy
  • Integration
    • Automatic System Power Selection From
      Adapter or Battery
    • Internal Loop Compensation
    • Internal Soft-Start
    • Dynamic Power Management
  • Safety Protection
    • Input Overvoltage Protection
    • 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
  • 24-Pin, 4-mm × 4-mm QFN Package
  • Energy Star Low Quiescent Current Iq
    • < 15-µA Off-State Battery Discharge Current
    • < 1.5-mA Off-State Input Quiescent Current

Parametrics

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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)
BQ24616 Order now 1
2
3
4
5
6    
Charger     Li-Ion/Li-Polymer     20     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)    
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)    
BQ24610 Order now 1
2
3
4
5
6    
Charger     Li-Ion/Li-Polymer     20     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)    
BQ24617 Order now 1
2
3
4
5    
Charger     Li-Ion/Li-Polymer     20     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     20     5     28