This is a high-efficiency three-channel power management chip. It integrates a synchronous step-down DC/DC converter, an asynchronous step-up DC/DC converter and an LDO regulator. The synchronous step-down DC/DC converter supports a continuous load capacity of 600 mA. Under light load conditions, the power saving mode is adopted to support high efficiency and reduce power loss. The boost DC/DC converter has a built-in 2A N-channel MOSFET and an operating frequency of 700kHz. When the input is disconnected, boost will automatically switch the fixed 12V output of the super capacitor. The LDO provides a continuous load current capability of up to 300 mA for supercapacitor charging.

Use a PMU to complete the traditional supercapacitor holdover circuit

*Input Voltage Range: 5.5V to 36V
*Buck Converter:
Output Voltage: Fixed 3.3V 600mA Output Current
Integrated Power MOSFET RDS(ON)(500/300mΩ) Integrated MOS
700kHz Fix Switching Frequency
*Boost Converter:
Output Voltage: Fixed12V
Integrated Power MOSFET RDS(ON)(300mΩ) Integrated MOS
700kHz Fix Switching Frequency
*LDO regulator:
Programmable Output Current For Supercapacitor Charger
Cycle-by-Cycle Current Limit
*Over-Temperature Protection with Auto Recovery
*Available in Package SOP-8 Exposed Pad and TDFN-8L (3mmx3mm) Packages