LT8708EUHG-1#TRPBF

Overview

The LT8708EUHG-1#TRPBF is an Analog Devices synchronous four-switch buck-boost DC/DC controller. It operates from a supply voltage of 2.8V to 80V and supports switching frequencies between 100kHz and 400kHz. The device features a maximum duty cycle of 80% and provides a single positive output ranging from 1.3V to 80V. Designed for non-isolated applications, it functions within a temperature range of -40°C to +125°C. Packaged in a 40-QFN (5x8) format, the controller utilizes a shutdown pin for power management and exhibits rise and fall times of 20ns.

Feature Summary

• Synchronous four-switch topology enabling seamless transition between buck, boost, and pass-through modes
• Wide input voltage range supporting operation above, below, or equal to the output voltage
• Integrated control logic with programmable switching frequency and duty cycle limits

Applications

• Battery-powered systems requiring stable output across varying cell voltages
• Industrial equipment needing robust power regulation under fluctuating line conditions
• Automotive electronics operating within wide voltage tolerance ranges

Procurement Notes

Verify the specific suffix '-1' against the manufacturer's datasheet to confirm functional differences compared to the standard LT8708 variant. Ensure the TRPBF designation matches required tape-and-reel packaging specifications. Cross-reference the QFN-40 package dimensions with PCB footprint requirements prior to procurement to ensure mechanical compatibility.

Selection Notes

Select this component when input voltages frequently exceed or drop below the required output level. The wide operating voltage range suits applications where battery discharge curves span the target output voltage. Consider the 40-QFN package for space-constrained designs requiring efficient thermal dissipation through exposed pad connections.

Part Context

This part belongs to the LT8708 family of high-voltage synchronous buck-boost controllers. It shares core architectural similarities with the LT8708EUHG#PBF but may differ in specific electrical characteristics or pinout configurations due to the '-1' suffix. The family is designed for versatile power management in demanding environments.

Replacement Considerations

LT8708EUHG#PBF is a related variant within the same product family. Verify if the '-1' suffix indicates a distinct electrical specification or pin configuration before substituting. Consult official documentation to ensure functional equivalence regarding control loops and timing parameters.