SC424MLTRT

Overview

The SC424MLTRT is a dual-output power management integrated circuit from the SmartDrive series, manufactured by Semtech Corporation. It integrates one synchronous buck converter and one low-dropout linear regulator (LDO) within a single package. The device operates with an input voltage range of 3V to 28V. The synchronous buck output provides adjustable voltage up to 6A, while the LDO output delivers a fixed 5V at 150mA. The switching frequency for the buck converter is 1MHz. The component is housed in a 28-MLPQ (4x4mm) surface-mount package with an exposed pad for thermal dissipation. It supports an operating temperature range from -40°C to +85°C.

Feature Summary

• Integrates a high-current synchronous buck converter and a dedicated LDO in a compact footprint
• Features internal compensation and fully integrated power switches for simplified design
• Includes comprehensive fault protection mechanisms for system reliability

Applications

• Portable electronic devices requiring multiple regulated voltage rails
• Battery-powered systems with space constraints
• Embedded logic and peripheral power distribution

Procurement Notes

Verify the specific ordering suffix and package variant against the manufacturer's current datasheet before procurement. Confirm that the 28-MLPQ footprint matches the target PCB layout. Check for any recent product change notices or end-of-life announcements, as availability may vary by distributor region. Ensure compliance with RoHS and WEEE directives if required for the target market.

Selection Notes

Select this component when a design requires both high-current switching regulation and a clean linear supply from a single IC. The wide input voltage range suits applications powered by lithium-ion batteries or unregulated sources. Consider the thermal performance of the MLPQ package and ensure adequate copper area for heat dissipation. Verify that the 1MHz switching frequency aligns with electromagnetic interference requirements and inductor size constraints.

Part Context

The SC424MLTRT belongs to Semtech's SmartDrive family of power management solutions. This series focuses on integrating multiple power stages to reduce board space and component count. The device combines switching efficiency with linear regulation precision, targeting applications where power density and simplicity are critical. It serves as a consolidated power solution compared to using discrete regulators.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Consult Semtech technical support for direct replacements or pin-compatible alternatives.