IRDC3823-P1V2: 1.2V @ 3A, 12V in, Buck

The IR3823 is a synchronous buck converter, providing a compact, high performance and flexible solution in a small 3.5mm X 3.5 mm Power QFN package.

Key features offered by the IR3823 include selectable Digital Soft Start, precision 0.6Vreference voltage, Power Good, thermal protection, programmable switching frequency, Enable input, input under-voltage lockout for proper start-up, enhanced line/load regulation with feed forward, external frequency synchronization with smooth clocking, internal LDO and pre-bias start-up.

Output over-current protection function is implemented by sensing the voltage developed across the on-resistance of the synchronous MOSFET for optimum cost and performance and the current limit is thermally compensated.

This user guide contains the schematic and bill of materials for the IRDC3823 evaluation board. The guide describes operation and use of the evaluation board itself. Detailed application information for IR3823 is available in the IR3823 data sheet.