SGM41602
I2C Controlled, 2-Cell, 8A Switched Cap Parallel Battery Charger with Integrated Protection and Dual-Input Selector
The SGM41602 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 2-cell Li-Ion or Li-polymer battery in a wide 6.2V to 22V 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 application.
A two-channel switched-capacitor topology is used to reduce the required input capacitors, improve efficiency 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. Moreover, it supports two devices in parallel for higher power systems.
The SGM41602 is available in a Green WLCSP-3.2×4.1-80B package.
- Efficiency Optimized Switched-Capacitor Architecture
- Up to 8A Output Current
- 6.2V to 22V Input Voltage Range
- 187.5kHz to 750kHz Switching Frequency Setting
- Above 98.1% Voltage Divider Mode Efficiency (when VBAT = 8.4V, IBAT = 8A)
- Comprehensive Integrated Protection Feature
- External Dual-Input OVP Control
- Input Over-Voltage Protection (VBUS_OVP)
- Input Over-Current Protection (IBUS_OCP)
- Input Under-Current Protection (IBUS_UCP)
- Input Reverse-Current Protection (IBUS_RCP)
- Input Short-Circuit Protection (VBUS_SCP)
- Output Over-Voltage Protection (VOUT_OVP)
- Battery Over-Voltage Protection (VBAT_OVP)
- IBAT Over-Current Protection (IBAT_OCP)
- CFLY Short-Circuit Protection (CFLY_SHORT)
- Battery and Cable Connector Temperature Monitoring (TSBAT_FLT and TSBUS_FLT)
- Die Over-Temperature Protection (TDIE_OTP)
- Up to 14A Charging Current with Synchronized Dual SGM41602 for Parallel Charging
- 10-Channel 16-Bit (Effective) ADC Converter
- VAC1, VAC2, VBUS, IBUS, VOUT, VBAT, IBAT, TSBUS, TSBAT, TDIE for Monitoring
Smartphone, Tablet PC, Non-military Drone
Notebooks, Chromebook
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