The SGM41611 is an efficient 14A switched-capacitor battery charging device with I2C control that can be configured to 6 different operation modes: forward 4:1/2:1/1:1 step-down charging modes and reverse 1:4/1:2/1:1 step-up discharging modes. It can charge single-cell Li-Ion or Li-polymer battery in a wide 3.4V to 21V 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-quarter 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 and minimize the output ripple. It supports dual input configuration through integrated MUX control and driver for external OVPFETs.
It also allows single input with no external OVPFET or single OVPFET. The SGM41611 is available in a Green WLCSP-4.88× 3.6-108B package.
- 6 Different Operation Modes
- Forward 4:1/2:1/1:1 Step-down Charging Modes
- Reverse 1:4/1:2/1:1 Step-up Discharging Modes
- Efficiency Optimized Switched-Capacitor Architecture
- Up to 14A Output Current
- 3.4V to 21V Input Voltage Range
- 400kHz to 1.5MHz Switching Frequency Setting
- Above 96.8% Forward 4:1 Step-down Mode Efficiency (when VBAT = 5V, IBAT = 8A, fSW = 400kHz)
- Comprehensive Integrated Protection Feature
- External VUSB/VWPC OVP Control
- Input Over-Voltage Protection (VBUS_OVP)
- Input Under-Voltage Protection (VBUS_UVP)
- Input Over-Current Protection (IBUS_OCP)
- Input Under-Current Protection (IBUS_UCP)
- Input Reverse-Current Protection (IBUS_RCP)
- Output Over-Voltage Protection (VOUT_OVP)
- Battery Over-Voltage Protection (VBAT_OVP)
- IBAT Over-Current Protection (IBAT_OCP)
- CFLY Diagnosis (CFLY_DIAG)
- Switch Peak Over-Current Protection (PEAK_OCP)
- Die Over-Temperature Protection (TDIE_OTP)
- 9-Channel 12-Bit (Effective) ADC Converter
- VUSB, VWPC, VBUS, IBUS, VOUT, VBAT1, VBAT2, IBAT, TDIE for Monitoring
Smart Phone, Tablet PC
