IRDC3838: 1.8V @ 10A, 12V in

The IR3838 SupIRBuck™ is an easy-to-use, fully integrated and highly efficient DC/DC regulator. The onboard PWM controller and MOSFETs make IR3838 a space-efficient solution, providing accurate power delivery for low output voltage applications.

IR3838 is a versatile regulator which offers programmability of switching frequency and current limit while operates in wide input and output voltage range. The switching frequency is programmable from 250kHz to 1.5MHz for an optimum solution.

Key features include: Internal LDO, Pre-Bias startup, protection functions, such as hiccup current limit and thermal shutdown to give required system level security in the event of fault conditions. An output over-current protection function is implemented by sensing the voltage developed across the on-resistance of the synchronous rectifier MOSFET for optimum cost and performance.

The user guide contains the schematic and bill of materials for the IR3838 evaluation board. The guide describes operation and use of the evaluation board itself. Detailed application information for IR3838 is available in the IR3838 data sheet.