The SGM41600T is an efficient 8A switched-capacitor battery charging device with I2C control that can operate either in charge-pump voltage divider mode or in bypass mode. It can charge single-cell Li-Ion or Li-polymer battery in a wide 3.6V to 11.5V input voltage range (VBUS) from smart wall adapters or power banks. The switched-capacitor architecture is optimized for 50% duty cycle to cut the input current to one-half of the battery current and reduce the wiring drops, losses and temperature rise in the application.
A two-channel switched-capacitor topology is used to reduce the required input capacitors, improve efficiency and minimize the output ripple. Necessary protection features for safe charging performance including input over-voltage protection by external OVPFET (QOVP) and input reverse blocking (using an internal NFET) are provided.
The SGM41600T is available in a Green WLCSP- 2.95×2.95-36B package and can operate in the -40℃ to +85℃ ambient temperature range.
- Efficiency Optimized Switched-Capacitor Architecture
- Up to 8A Output Current
- 3.6V to 11.5V Input Voltage Range
- 300kHz to 1.5MHz Switching Frequency Setting
- Above 96.6% Voltage Divider Mode Efficiency (when VBAT = 4V, IBAT = 6A, CFLY = 3 × 22μF per Phase)
- Comprehensive Integrated Protection Features
- External OVP Control and Regulation
- Input Over-Voltage Protection (VBUS_OVP)
- Input Short-Circuit Protection (VBUS_SC)
- Input Over-Current Protection (IBUS_OCP)
- Input Under-Current Protection (IBUS_UCP)
- Battery Over-Voltage Protection (VBAT_OVP)
- Output Short-Circuit Protection (VOUT_SC)
- IBAT Over-Current Protection (IBAT_OCP)
- CFLY Short-Circuit Protection (CFLY_SC)
- Switch Peak Over-Current Protection (PEAK_OCP)
- Die Over-Temperature Protection (TDIE_OTP)
- 6-Channel 12-Bit (Effective) ADC Converter
- VBUS, IBUS, VBAT, IBAT, VOUT, TDIE for Monitoring
Smart Phone, Tablet PC
