LT1976EFE#PBF

Overview

The LT1976EFE#PBF is a monolithic buck switching regulator manufactured by Analog Devices Inc. It integrates a high-efficiency 1.5A power switch with all necessary oscillator, control, and logic circuitry on a single die. The device operates as an adjustable positive output regulator within a 16-lead TSSOP package featuring an exposed pad for thermal management. It supports an input voltage range from 3.3V to 60V, delivering a minimum fixed output of 1.25V up to a maximum of 55.2V. The unit functions at a standard switching frequency of 200kHz and provides current mode architecture for stable loop performance across a junction temperature range of -40°C to 125°C.

Feature Summary

• Integrates a high-efficiency 1.5A power switch with complete oscillator and control logic
• Utilizes current mode architecture for fast transient response and robust loop stability
• Supports wide input voltage ranges suitable for industrial and automotive bus systems
• Includes thermal pad design for effective heat dissipation in surface mount applications

Applications

• Industrial point-of-load regulation
• Automotive electronics power distribution
• Distributed power supply architectures
• Battery-powered equipment step-down conversion

Procurement Notes

Verify the specific suffix #PBF indicates tube packaging when sourcing components. Confirm that the lead-free designation aligns with RoHS compliance requirements for your assembly process. Ensure the 16-TSSOP footprint matches your PCB layout specifications before finalizing procurement orders.

Selection Notes

Select this component when a non-synchronous buck topology is required for cost-sensitive designs. The 1.5A continuous current capability suits moderate load applications. Consider the 200kHz switching frequency for balancing efficiency against external component size. Verify input voltage compatibility with your system's power rails.

Part Context

This part belongs to the LT1976 family of monolithic buck regulators designed for high-voltage input applications. It shares architectural similarities with other Analog Devices switching regulators but distinguishes itself through its specific 1.5A switch rating and 60V input tolerance. The family targets general-purpose DC-DC conversion needs in compact form factors.

Replacement Considerations

LT1976IFE#TRPBF serves as a tape-and-reel alternative offering identical electrical characteristics and functionality.