SC4620MLTRT

Voltage Regulators - DC DC Switching Regulators Overview

The SC4620MLTRT is a synchronous step-down DC/DC regulator from Semtech Corporation, designed for low input voltage applications. It operates within an input voltage range of 2.3V to 5.5V and delivers a continuous output current of 2.5A. The device features an adjustable output voltage ranging from 0.5V to the input voltage level. Key electrical specifications include a synchronizable and programmable switching frequency between 200kHz and 2MHz, shutdown current of less than 1µA, and efficiency up to 95%. It incorporates internal low RDS(ON) synchronous power switches, eliminating the need for external Schottky diodes. The component includes programmable soft start, programmable current limit, over-temperature protection, and a power good monitor. It is housed in a 4x4mm MLPQ-20 package.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Highly integrated synchronous step-down architecture with internal low RDS(ON) power switches
• Programmable switching frequency ranging from 200kHz to 2MHz with synchronization capability
• Comprehensive protection features including over-temperature protection and programmable current limit
• Low quiescent current consumption with shutdown current below 1µA

Voltage Regulators - DC DC Switching Regulators Applications

• Low Voltage Distributed DC-DC Converters
• Telecommunication Power Supplies
• Portable Equipment
• xDSL Systems

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix MLTRT corresponds to the MLPQ-20 package configuration as documented in official Semtech datasheets. Confirm RoHS and WEEE compliance status through current manufacturer declarations. Ensure compatibility with required thermal management solutions given the 2.5A output capability. Cross-reference ordering information directly with Semtech or authorized distributors to validate part availability and revision levels.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component for designs requiring high efficiency in low input voltage environments. The wide programmable frequency range allows optimization for size versus performance trade-offs. Internal integration reduces external component count compared to non-integrated regulators. Consider the MLPQ-20 package dimensions for PCB layout constraints. Verify that the 2.5A continuous current rating meets peak load requirements of the target application.

Voltage Regulators - DC DC Switching Regulators Part Context

The SC4620 belongs to Semtech's family of highly integrated synchronous buck converters. It is engineered for applications demanding compact footprints and high efficiency under low voltage conditions. The device distinguishes itself by combining power stage, control logic, and protection circuits into a single small form factor. This integration supports space-constrained portable and telecommunications equipment designs.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Evaluate alternative Semtech models within the same product family based on current rating and package compatibility.