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bq24157S
SLUSB76B – FEBRUARY 2013...
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bq24157S
SLUSB76B – FEBRUARY 2013 – REVISED MAY 2015
bq24157S 1.55-A Fully Integrated Switch-Mode One-Cell Li-Ion Charger With Full USB Compliance and USB-OTG Support
1 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
Voltage and Current Limiting High-Efficiency Mini-USB/AC Battery Charger for
Single-Cell Li-Ion and Li-Polymer Battery Packs 20-V Absolute Maximum Input
Voltage Rating 6.5-V Maximum Operating Input
Voltage Programmable Charge Parameters through I2C
Compatible Interface (up to 3.4 Mbps): – Input Current Limit – VIN DPM Threshold – Fast-Charge/Termination Current – Charge Regulation
Voltage (3.5 to 4.44 V) – Low Charge Current Mode Enable/Disable – Termination Enable/Disable Synchronous Fixed-Frequency PWM Controller Operating at 3 MHz With 0% to 99.5% Duty Cycle Automatic High Impedance Mode for Low Power Consumption Robust Protection – Reverse Leakage Protection Prevents Batt...