SC461ULTRT

Description：IC REGULATOR BUCK 20-MLPQ
Series：-
Mfr：Semtech Corporation
Package：Tape & Reel (TR)

SKU:3a199bb25eb2 Category: DC DC Switching Controllers Brand: Semtech Corporation

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Product introduction

Product Detailed Parameters

Description：IC REGULATOR BUCK 20-MLPQ
Series：-
Mfr：Semtech Corporation
Package：Tape & Reel (TR)
Output Type：-
Function：-
Output Configuration：-
Topology：-
Number of Outputs：-
Output Phases：-
Voltage - Supply (Vcc/Vdd)：-
Frequency - Switching：-
Duty Cycle (Max)：-
Synchronous Rectifier：-
Clock Sync：-
Serial Interfaces：-
Control Features：-
Operating Temperature：-
Mounting Type：Surface Mount
Package / Case：20-VFQFN Exposed Pad
Supplier Device Package：20-MLPQ-UT (3x3)
Grade：-
Qualification：-

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SC461ULTRT

Overview

The SC461ULTRT is a synchronous EcoSpeed buck regulator featuring an integrated bootstrap switch and a fixed 5V LDO. It utilizes adaptive on-time control for high efficiency and fast transient response. The device supports switching frequencies up to 1MHz and accepts input voltages from 3V to 28V. Key specifications include a 200mA LDO output, 1% reference tolerance, and operation across a temperature range of -40°C to +85°C. It offers programmable soft-start, selectable power-save modes, and comprehensive protection features including thermal shutdown and current limit.

Feature Summary

Integrates a synchronous buck converter with a fixed 5V LDO in a compact package
Employs patented adaptive on-time control architecture for optimized light-load efficiency
Supports standard capacitor types including electrolytic, polymer, and ceramic variants

Applications

Office automation and computing systems
Networking and telecommunication equipment
Point-of-load power supplies and module replacements

Procurement Notes

Verify the specific suffix 'ULTRT' against the manufacturer's official documentation to confirm tape-and-reel packaging and lead-free compliance status. Ensure the component matches the 20-pin MLPQ package dimensions. Cross-reference the RoHS and WEEE compliance declarations directly with the latest datasheet revision to guarantee regulatory adherence for your target market.

Selection Notes

Select this component when a combined high-efficiency DC-DC step-down solution and a stable 5V auxiliary rail are required within a single footprint. The integrated bootstrap switch simplifies gate drive requirements. Consider the adaptive on-time control for applications demanding rapid transient response without compromising stability at light loads using various capacitor technologies.

Part Context

This part belongs to Semtech’s EcoSpeed series, designed for high-performance power management. The SC461 family integrates advanced control architectures to minimize PCB area while maintaining robust performance. It serves as a specialized solution for space-constrained designs requiring both main regulation and auxiliary voltage generation in industrial or consumer electronics.