The IR3821 is a synchronous buck converter, providing a compact, high performance and flexible solution in a small 5mmx6mm Power QFN package.Key features offered by the IR3821 include programmable soft-start ramp, precision 0.6 V reference voltage, programmable Power Good, thermal protection, fixed 600 kHz switching frequency requiring no external component, input under-voltage lockout for proper start-up, and pre-bias start-up.

The IR3821 SupIRBuckTM is an easy-to-use, fully integrated and highly efficient DC/DC regulator.
The onboard switching controller and MOSFETs make the IR3821 a space-efficient solution, providing accurate power delivery for low output voltage applications.

Features:

• Wide Input Voltage Range 2.5 V to 21 V.
• Wide Output Voltage Range 0.6 V to 12 V.
• Continuous 7 A Load Capability.
• 600 kHz High Frequency Operation.
• Programmable Over-Current Protection.
• Programmable PGood Output.
• Hiccup Current Limit.
• Precision Reference Voltage (0.6 V).
• Programmable Soft-Start.
• Pre-Bias Start-up.
• Thermal Protection.
• Thermally Enhanced Package.
• Small Size 5mmx6mm QFN.
• Pb-Free (RoHS Compliant).

Applications:

• Distributed Point-of-Loads.
• Server and Workstations.
• Embedded Systems.
• Storage Systems.
• DDR Applications.
• Graphics Cards.
• Game Consoles.
• Computing Peripheral Voltage Regulators.