BQ24157

Product Folder Order Now Technical Documents Tools & Software Support & Community bq24157 SLUSB80E – SEPTEMBER 2012 – REVISED JANUARY 2018 bq24157 Fully Integrated Switch-Mode Charger With USB Compliance and USB-OTG Support 1 Features 1 Power Up System without Battery Charge Faster than Linear Chargers 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% 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 Built-In Input Current Sensing and Limiting Integrated Power FETs for Up To 1.55-A Charge Rate 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 V to 4.44 V) – Low Charge Current Mode Enable/Disable – Termination Enable/Disable Support up to 1.55A Charge Current using 55 mΩ Sensing Resistor 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 – Re...