bq24753A
FEATURES
- 2 NMOS-NMOS Synchronous Buck Converter with 300 k Hz Frequency and >95% Efficiency
- 30-ns Minimum Driver Dead-time and 99.5% Maximum Effective Duty Cycle
- High-Accuracy Voltage and Current Regulation
- ±0.5% Charge Voltage Accuracy
- ±3% Charge Current Accuracy
- ±3% Adapter Current Accuracy
- ±2% Input Current Sense Amp Accuracy
- Integration
- Automatic System Power Selection From AC/DC Adapter or Battery
- Internal Loop pensation
- Internal Soft Start
- Safety
- Programmable Input Overvoltage Protection (OVP)
- Fast Dynamic Power Management (DPM)
- Programmable Inrush Adapter Power (ACOP) and Overcurrent (ACOC) Limits
- Reverse-Conduction Protection Input FET
- Supports Two, Three, or Four Li+ Cells
- 8
- 24 V AC/DC-Adapter Operating Range
- Analog Inputs with Ratiometric Programming via Resistors or DAC/GPIO Host Control
- Charge Voltage (4-4.512 V/cell)
- Charge Current (up to 10 A, with 10-mΩ)
- Adapter Current Limit (DPM)
- Status and Monitoring Outputs
- Adapter Present with Programmable
Voltage Threshold
- Current Drawn from Input Source
- Battery Learn Cycle Control
- Charge Enable
- 28-pin, 5x5-mm QFN package
- Energy Star Low Iq
- < 10 µA Off-State Battery Discharge Current
- < 1.5 m A Off-State Input Quiescent Current
OVPSET AGND VREF VDAC VADJ
ACGOOD BATDRV
APPLICATIONS
- Notebook, Netbook and Ultra-Mobile puters
- Portable Data Capture...
