SIC403CD-T1-GE3

Overview

The SIC403CD-T1-GE3 is a synchronous step-down DC/DC converter from the Microbuck series by Vishay Siliconix. It operates with an input voltage range of 3 V to 28 V and delivers up to 6 A output current. The device supports adjustable output voltages between 750 mV and 5.5 V, with a switching frequency ranging from 200 kHz to 1 MHz. It features a quiescent current of 130 uA and functions within a temperature range of -40°C to +125°C. Packaged in an MLPQ55-32 footprint, it is designed for efficient power management.

Feature Summary

• Synchronous buck topology for high efficiency
• Wide input voltage compatibility
• Integrated shutdown capability

Applications

• Point-of-load regulation
• Industrial control systems
• Communication equipment power supplies

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and check for end-of-life notifications, as discontinuation may impact long-term supply chain stability. Ensure packaging specifications match production requirements.

Selection Notes

Evaluate thermal performance and PCB layout constraints due to the MLPQ55-32 package size. Consider external component selection for filtering and stability based on the specified switching frequency range. Assess input voltage stability against the 3 V minimum requirement.

Part Context

This component belongs to the SIC series of power management integrated circuits. It serves as a compact solution for converting higher bus voltages to lower logic or peripheral levels. The part integrates control logic and power switches into a single module.

Replacement Considerations

SIC403CD-GE3 is listed as an alternative part number.