LT8631IFE#TRPBF

Overview

The LT8631IFE#TRPBF is a synchronous micropower step-down DC/DC converter manufactured by Analog Devices Inc. It operates with an input voltage range from 3 V to 100 V and delivers up to 1 A of output current. The device features adjustable output voltages between 808 mV and 60 V, with a typical quiescent current of 16 uA and shutdown supply current of 3.6 uA. Switching frequency is programmable from 100 kHz to 1 MHz. It utilizes a 20-lead TSSOP package with an exposed pad for thermal management and supports operation temperatures from -40°C to +125°C.

Feature Summary

• Integrated high-voltage synchronous buck topology supporting inputs up to 100 V
• Micropower architecture with ultra-low quiescent and shutdown currents
• Programmable switching frequency allows optimization for efficiency or component size
• Adjustable output voltage range accommodates diverse load requirements

Applications

• Industrial automation control systems
• Battery-powered instrumentation
• Point-of-load regulation in high-voltage buses
• Telecommunications infrastructure power distribution

Procurement Notes

Verify the suffix #TRPBF indicates tape-and-reel packaging distinct from tube variants. Confirm RoHS compliance status through official documentation. Ensure ordering matches the specific temperature grade and package variant required for the design. Cross-reference datasheet revisions for any parameter updates prior to final procurement.

Selection Notes

Select this component when high input voltage capability combined with low standby current is critical. Evaluate thermal performance within the 20-TSSOP-EP package for the expected load conditions. Consider external compensation components if operating at frequencies outside standard ranges. Verify that the minimum output voltage requirement aligns with the internal reference limits.

Part Context

This part belongs to the LT8631 family of synchronous step-down regulators designed for high-voltage applications. It shares architectural similarities with other micropower converters but distinguishes itself through its extended 100 V input rating. The family targets applications requiring efficient power conversion from high-voltage sources with minimal idle power consumption.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.