JW3702 Datasheet | JoulWatt Technology

DESCRIPTION FEATURES The JW®3702 is a synchronous 4-switch buck-boost controller capable of charging 1-4 cell Li-ion batteries with high light load efficiency and fast transient response. It can charge the battery from a wide range of input sources, such as USB adapter, high voltage USB PD sources and traditional adapters. The JW3702 supports I2C serial munication interface to program a lot of parameters of the chip, offering a flexible solution for battery charging applications. An internal 10-bit ADC is provided to monitor the bus voltage, bus current, battery voltage, battery current and NTC resistor voltage, so user can monitor the system status in real time. The device also supports OTG function to deliver power from battery to other portable devices through USB port. And the OTG voltage and current limit can be programmed by I2C interface. The JW3702 guarantees robustness with battery/ OTG over-voltage protection, bus/ battery under-voltage protection, OTG/ battery over-current protection, charging timeout, watchdog and thermal shutdown. The JW3702 is available in QFN4X4-32 package. pany’s Logo is Protected, “JW” and “JOULWATT” are Registered Trademarks of Joul Watt technology Inc. - Up to 28V breakdown voltage - 3.0V to 24V input voltage range - 2.4V to 24V OTG output voltage range - Support 1-4 cell batteries charging and discharging - 150k Hz to 500k Hz programmable switching frequency - I2C interface supported - Integrate 10-bit ADC to monitor bus voltage, bus current, battery voltage, battery current and NTC resistor voltage - Integrate charge pump circuit to provide 6V drive voltage even with single cell application - Safety - battery/OTG over-voltage protection - bus/battery under-voltage protection - OTG/battery over-current protection - charging timeout - watchdog protection - thermal shutdown - Ultra-low quiescent current: 12u A (typical) - Package: QFN4X4-32 APPLICATIONS - Power bank - USB Type-C PD - USB-HUB - Portable devices with rechargeable...