SC403BMLTRT

Overview

The SC403BMLTRT is a dual-output power management IC from Semtech, integrating a synchronous buck converter and a linear regulator. It operates within an input voltage range of 3V to 28V. The primary output delivers up to 6A with adjustable voltage down to 0.75V, while the secondary LDO provides 200mA. Operating at a 1MHz switching frequency, it utilizes a 32-MLPQ (5x5mm) package. Designed for EcoSpeed and SmartDrive series applications, it supports sequencing and functions across a temperature range of -40°C to 85°C.

Feature Summary

• Integrates a high-current synchronous buck converter and a low-dropout linear regulator in a single compact package.
• Supports independent output sequencing for controlled power-up and power-down sequences.
• Features a wide input voltage range suitable for various bus architectures.
• Includes internal protection mechanisms for thermal and current overload scenarios.

Applications

• Portable electronics requiring multiple regulated voltage rails
• Industrial control systems with mixed analog and digital loads
• Communication equipment needing efficient power conversion
• Automotive infotainment and sensor modules

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and check for recent Product Change Notices regarding packaging or labeling updates. Ensure the specific tape-and-reel quantity matches production requirements. Validate that the 32-MLPQ footprint aligns with existing PCB designs before finalizing orders.

Selection Notes

Select this component when a combined buck and LDO solution is required to save board space. The 6A buck output suits high-power digital cores, while the 200mA LDO handles sensitive analog circuits. Consider the 1MHz frequency for balancing efficiency and external component size. Ensure the 3V-28V input range covers the system's supply variations.

Part Context

Part of the SC403 family, designed for high-efficiency power management. It combines switching and linear technologies to optimize performance across different load conditions. The MLPQ package offers thermal advantages for dense layouts. This series targets applications demanding reliable, compact power solutions with integrated protection features.

Replacement Considerations

Check Semtech documentation for officially listed cross-reference parts. Verify pin compatibility and electrical specifications before substitution. Ensure any alternative maintains the same output current capabilities and package dimensions.

FAQ

What is the maximum output current for the buck converter section?

The synchronous buck converter section supports a maximum output current of 6A.

Does the device support independent output control?

Yes, the IC includes sequencing capabilities allowing independent control of the buck and LDO outputs.

What is the operating temperature range?

The device is rated for operation between -40°C and +85°C.