LT1976BIFE#TRPBF

Overview

The LT1976BIFE#TRPBF is a high-voltage, low quiescent current buck switching regulator manufactured by Analog Devices Inc. It operates with an input voltage range of 3.3V to 60V and provides an adjustable output voltage from 1.25V to 55.2V. The device delivers a maximum switch current of 1.5A at a fixed switching frequency of 200kHz. It features a typical quiescent current of 100µA and supports a junction temperature range of -40°C to +125°C. The component is housed in a 16-TSSOP package with an exposed pad for thermal management.

Feature Summary

• Supports wide 60V input voltage range suitable for automotive and industrial bus systems
• Integrates power switch and control circuitry in a single monolithic chip
• Features low 100µA quiescent current for efficient battery-powered applications
• Includes thermal shutdown protection for enhanced reliability

Applications

• Automotive electronics and infotainment systems
• Industrial distributed power architectures
• Battery-powered equipment requiring extended standby life
• Point-of-load regulation for microprocessors

Procurement Notes

Verify the specific suffix 'B' against the manufacturer's official datasheet to confirm any distinct electrical tolerances or testing criteria compared to the standard LT1976 variant. Ensure the ordering part number matches the required tape and reel packaging configuration. Cross-reference the component marking with the official product identification guide to prevent counterfeit substitution during acquisition.

Selection Notes

Select this component when designing systems requiring high input voltages up to 60V with moderate output current capabilities. The fixed 200kHz frequency allows for smaller external passive components compared to lower-frequency regulators. Consider the 16-TSSOP-EP package for its thermal dissipation advantages in space-constrained layouts where heat transfer to the PCB ground plane is critical for maintaining performance within the specified temperature range.

Part Context

This part belongs to the LT1976 family of high-voltage step-down converters designed for demanding environments. It complements Analog Devices' portfolio of power management solutions by addressing applications that require robust operation across wide input ranges. The family is commonly utilized in scenarios where traditional low-voltage regulators cannot handle the system bus voltage directly without additional pre-regulation stages.

Replacement Considerations

LT1976IFE#TRPBF