LT3973IMSE-5#TRPBF

Overview

The LT3973IMSE-5#TRPBF is a monolithic buck switching regulator manufactured by Analog Devices Inc. It features an adjustable frequency range from 195kHz to 2.15MHz and accepts a wide input voltage range up to 42V. The device provides a fixed output voltage of 5V with a maximum output current of 750mA. It operates within a junction temperature range of -40°C to 125°C and consumes a quiescent current of 2.5µA. The component utilizes a 10-MSOP package.

Feature Summary

• Adjustable switching frequency for optimized efficiency across load conditions
• Wide input voltage capability supporting high-voltage systems
• Ultra-low quiescent current for extended battery life in standby modes

Applications

• Industrial power supply systems
• Automotive electronics applications
• General-purpose step-down conversion circuits

Procurement Notes

Verify the specific suffix #TRPBF indicates tape-and-reel packaging when ordering. Confirm the fixed 5V output variant matches the design requirement, as other voltage options exist within the LT3973 family. Ensure the MSOP-10 package footprint aligns with the PCB layout specifications before finalizing procurement.

Selection Notes

Select this part for designs requiring a compact solution with wide input voltage tolerance. The adjustable frequency feature allows designers to optimize for either size or efficiency. Consider the thermal performance of the MSOP-10 package under full load conditions to ensure reliable operation within the specified temperature range.

Part Context

This component belongs to the LT3973 series of synchronous buck regulators. It is designed for applications demanding low static current and flexible switching frequency control. The IMSE-5 designation specifies the industrial temperature grade and the fixed 5V output configuration.

Replacement Considerations

LT3973IMSE-5#PBF is a verified substitute offering identical electrical characteristics but in tube packaging instead of tape-and-reel.