BQ24640 的特性
Charge Super Capacitor Pack From 2.1 V to 26 V
CC/CV Charge Profile From 0 V Without
Precharge
600-kHz NMOS-NMOS Synchronous Buck
Controller
Over 90% Efficiency for up to 10-A Charge
Current
5-V to 28-V VCC Input Voltage Range
Accuracy
±0.5% Charge Voltage Regulation
±3% Charge Current Regulation
High Integration
Internal Loop Compensation
Internal Digital Soft Start
Safety
Input Overvoltage Protection
Capacitor Temperature Sensing Hot and Cold
Charge Suspend
Thermal Shutdown
Status Outputs
Adapter Present
Charger Operation Status
Charge Enable Pin
30-ns Driver Dead Time and 99.5% Maximum
Effective Duty Cycle
Automatic Sleep Mode for Low Power
Consumption
<15-μA Off-State Super Capacitor Discharge
Current
<1.5-mA Off-State Input Quiescent Current
APPLICATIONS
Memory Backup Systems
Industrial UPS Systems and Power Transient Buffering
Bridge Power to Buffer the Battery
