The SGM41607 is an efficient 12A 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 3.4V to 11.5V input voltage range (VBUS) from smart wall adapters or wireless charger. 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 mode.
A two-phase 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 over-voltage protection by external OVPFET (QOVP) and input reverse blocking (using an internal NFET) are provided.
A high accuracy ADC with 15-bit effective resolution is also included to measure VBAT, IBAT, VAC, VOUT, VBUS, IBUS, TSBUS, TSBAT, TDIE (9 channels) for better management of the charge process.
The SGM41607 is available in a Green WLCSP-3.2×3.35 -56B package.
- Efficiency Optimized Switched Capacitor Architecture
- Up to 12A Output Current
- 3.4V to 11.5V Input Voltage Range
- 187.5kHz to 750kHz Switching Frequency Setting
- 96.3% Efficiency for 10A Fast Charging
- 6A Charging in Bypass Mode
- Comprehensive Integrated Protection Features
- External VBAT, IBAT, IBUS Regulation with External OVPFET
- Input/Output Over-Voltage Protection (VBUS_OVP, VAC_OVP, VOUT_OVP)
- Input/VOUT/CFLY Short-Circuit Protection (VBUS_SCP, VOUT_SCP, CFLY SCP)
- Input Over-Current Protection (IBUS_OCP)
- Input Under-Current Protection (IBUS_UCP)
- Battery Over-Voltage Protection (VBAT_OVP)
- IBAT Over-Current Protection (IBAT_OCP)
- Converter Over-Current (CONV_OCP)
- 9-Channel 15-Bit (Effective) ADC Converter
- VBAT, IBAT, VAC, VOUT, VBUS, IBUS, TSBUS, TSBAT and TDIE for Monitoring
Smart Phone, Tablet PC
