DC1448A - LTC3455EUF-1 Demo Board | USB Power Solution, USB / 5V Adapter Input, Linear Li-Ion Charger, Dual Sync Buck 3.15V @ 500mA, 1.8V @ 400mA

Demonstration circuit DC1448 is a complete power solution for a USB powered device. Power is input from one of three sources, and three outputs are provided, as well as supervisory signals for a microprocessor. DC631 provides the following functions; 700mA CC/CV timer terminated charger suitable for 4.1V Li-Ion cells, USB power manager that insures compliance with the USB power specification, two 1.5MHz synchronous step-down converters and reset and power button status outputs for interfacing with a microprocessor.