BQ24157S Description
The bq24157S is a pact, flexible, high-efficiency, USB-friendly switch-mode charge management device for single-cell Li-ion and Li-polymer batteries used in a wide range of portable applications. The charge parameters can be programmed through an I2C interface. The IC integrates a synchronous PWM controller, power MOSFETs, input current sensing, high-accuracy current and voltage regulation, and charge termination,...
BQ24157S Key Features
- 1 Integrated Power FETs for up to 1.55-A Charge Rate
- Spread Spectrum Frequency Control for Improved EMI Performance
- High-Accuracy Voltage and Current Regulation
- Input Current Regulation Accuracy: ±5% (100 mA and 500 mA)
- Charge Voltage Regulation Accuracy: ±0.5% (25°C), ±1% (0°C to 125°C)
- Charge Current Regulation Accuracy: ±5%
- Factory Test-Mode for GSM Calibration Without a Battery
- Input Voltage Based Dynamic Power Management (VIN DPM)
- Bad Adaptor Detection and Rejection
- Safety Limit Register for Maximum Charge