BQ24600 (ACTIVE)

Standalone Synchronous Switch-mode Charge Controller

 

Description

The bq24600 is a highly integrated Li-ion or Li-polymer switch-mode battery-charge controller. It offers a constant-frequency synchronous PWM controller with high-accuracy charge current and voltage regulation, charge preconditioning, termination, and charge status monitoring,

The bq24600 charges the battery in three phases: preconditioning, constant current, and constant voltage. Charge is terminated when the current reaches a minimum level. An internal charge timer provides a safety backup. The bq24600 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

  • 1.2-MHz NMOS-NMOS Synchronous Buck Converter
  • Stand-Alone Charger Support for Li-Ion or Li-Polymer
  • 5-V – 28-V VCC Input Voltage Range and Supports
    1S-6S 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
  • Integration
    • Internal Loop Compensation
    • Internal Soft Start
  • Safety
    • Input Overvoltage Protection
    • Battery Thermistor Sense Hot/Cold Charge Suspend
    • Battery Detection
    • Built-In 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 Power Converter
  • 30-ns Driver Dead-Time and 99.5% Max. Effective Duty Cycle
  • 16-Pin 3.5-mm × 3.5-mm QFN package
  • Energy Star Low Quiescent Current Iq
    • < 15-µA Off-State Battery Discharge Current
    • < 1.5-mA Off-State Input Quiescent Current

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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
Rating
Operating Temperature Range (C)
Pin/Package
Approx. Price (US$)
Operating Vin (Max) (V)
Absolute Vin (safety rating) (Max) ((V))
BQ24600 BQ24610 BQ24617 BQ24620 BQ24630 BQ24640
1
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5
6    
1
2
3
4
5
6    
1
2
3
4
5    
1
2
3
4
5
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7    
1
2
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7    
 
Charger     Charger     Charger     Charger     Charger     Charger    
Li-Ion/Li-Polymer     Li-Ion/Li-Polymer     Li-Ion/Li-Polymer     LiFePO4     LiFePO4     SuperCap    
Power Path
Temp Monitoring (Thermistor Pin)    
Power Path
Standard BAT Temp Monitoring    
Power Path
Standard BAT Temp Monitoring    
Temp Monitoring (Thermistor Pin)     Temp Monitoring (Thermistor Pin)     Temp Monitoring (Thermistor Pin)    
Adjustable     Adjustable     Adjustable     Adjustable     Adjustable     Adjustable    
10     10     10     10     10     10    
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)    
Catalog     Catalog     Catalog     Catalog     Catalog     Catalog    
-40 to 85     -40 to 85     -40 to 85     -40 to 85     -40 to 85     -40 to 85    
16VQFN     24VQFN     24VQFN     16VQFN     24VQFN     16VQFN    
2.75 | 1ku     2.75 | 1ku     2.75 | 1ku     2.00 | 1ku     2.00 | 1ku     2.00 | 1ku    
28     28     24     28     28     28    
33     33     33     33     33     33