LT8705AMPFE#TRPBF

Overview

The LT8705AMPFE#TRPBF is a synchronous four-switch buck-boost DC/DC controller from Analog Devices. It supports an input voltage range of 2.8V to 80V and delivers up to 10A output current with voltages from 1.3V to 80V. The device operates at switching frequencies between 100kHz and 400kHz, featuring a quiescent current of 2.65mA. It utilizes a 38-TSSOP-EP package and functions within a temperature range of -55°C to +150°C.

Feature Summary

• Synchronous four-switch buck-boost topology for seamless operation across input and output voltage levels
• Integrated feedback loops for input current, input voltage, output current, and output voltage regulation
• Supports clock synchronization and soft-start functionality

Applications

• Supercapacitor backup power systems
• Industrial distributed power architectures
• Battery-powered equipment requiring wide input ranges

Procurement Notes

Verify the specific suffix against official documentation to confirm packaging and temperature grade. Confirm availability status as some variants may be discontinued or restricted. Ensure the component matches the required pinout and thermal pad configuration for the target PCB layout.

Selection Notes

Select this controller when input voltages fluctuate above, below, or equal to the required output level. It is suitable for designs requiring high efficiency across wide dynamic ranges. Consider the 38-pin TSSOP-EP package for thermal management in high-current applications.

Part Context

This component belongs to the LT8705 family of high-performance buck-boost switching regulator controllers. These devices are designed to eliminate switching noise and provide pass-through capability. The series is widely used in applications demanding robust power conversion under varying line conditions.

Replacement Considerations

LT8705AMPFE#PBF is listed as a direct substitute.