LT1374HVCFE#PBF

Overview

The LT1374HVCFE#PBF is a monolithic buck switching regulator manufactured by Analog Devices Inc. It operates with a constant 500kHz switching frequency and integrates a high-power switch capable of delivering up to 4.5A. The device supports an input voltage range from 5V to 32V and provides an adjustable output voltage. It features a low operating supply current of 2.5mA and a shutdown current of 20µA. The component is housed in a 16-pin TSSOP package with an exposed pad, designed for surface-mount installation.

Feature Summary

• Integrates a 4.5A power switch with a saturating design for high efficiency
• Supports cycle-by-cycle current limiting for robust protection
• Enables easy synchronization to external clocks
• Offers low quiescent current consumption in both active and shutdown modes

Applications

• Point-of-load regulation for industrial systems
• High-current distribution networks
• Battery-powered equipment requiring efficient step-down conversion
• Telecommunications infrastructure power supplies

Procurement Notes

Verify the specific suffix CFEPBF against official Analog Devices documentation to confirm pinout and thermal characteristics. Ensure compatibility with the 16-TSSOP-EP footprint during PCB layout. Confirm RoHS compliance status through the manufacturer's latest material declaration. Cross-reference the part number with authorized distributors to validate authenticity and traceability before procurement.

Selection Notes

Select this regulator when a fixed 500kHz frequency is required to simplify EMI filtering and inductor selection. The wide input voltage range accommodates various bus voltages common in industrial applications. Consider the thermal performance of the TSSOP-EP package for high-current designs. Evaluate the need for external synchronization if noise immunity is critical in the system environment.

Part Context

This component belongs to the LT1374 family of high-efficiency switching regulators. The HV variant specifically denotes support for higher input voltages up to 32V compared to standard versions. The CFE suffix indicates the specific tape-and-reel packaging and temperature grade. This series is designed to minimize external component count while maintaining high power density.

Replacement Considerations

LT1374HVIFE#PBF offers identical electrical specifications but utilizes a different package configuration.