SC403MLTRT

Overview

The SC403MLTRT is a dual-output power management IC from Semtech, integrating one synchronous buck converter and one low-dropout linear regulator. It operates within an input voltage range of 3V to 28V. The synchronous buck output provides up to 6A with an adjustable voltage down to 0.75V, while the LDO output delivers up to 200mA, also adjustable to 0.75V. The device features a fixed switching frequency of 1MHz and is housed in a 32-MLPQ (5x5) surface-mount package. It supports operation across a temperature range of -40°C to 85°C.

Feature Summary

• Integrates a high-current synchronous buck converter and a precision LDO in a single compact package
• Features internal sequencing control for coordinated startup and shutdown of outputs
• Supports wide input voltage ranges suitable for various bus architectures

Applications

• Portable electronic devices requiring multiple regulated rails
• Industrial equipment power distribution systems
• Automotive infotainment and control modules

Procurement Notes

Verify component authenticity through authorized channels as this part has reached end-of-life status. Confirm that the specific MLPQ package variant matches the design footprint requirements. Check for RoHS compliance documentation if required by regional regulations. Ensure supply chain stability due to discontinued manufacturing status.

Selection Notes

Select this component when a combined solution for high-current digital logic and sensitive analog circuits is needed. The integrated sequencer simplifies board layout compared to discrete solutions. Consider thermal dissipation requirements for the 6A buck output under heavy load conditions within the specified operating temperature range.

Part Context

This device belongs to the EcoSpeed and SmartDrive product families from Semtech. These series focus on efficient power conversion technologies for mobile and industrial applications. The SC403 represents a consolidated approach to power management, reducing component count and board space compared to separate regulator implementations.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source data.