LT8705IFE

Description：IC REG BUCK
Series：-
Mfr：Analog Devices Inc.
Package：Tube

SKU:1fe907fd0852 Category: DC DC Switching Controllers Brand: Analog Devices Inc.

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Product introduction

Product Detailed Parameters

Description：IC REG BUCK
Series：-
Mfr：Analog Devices Inc.
Package：Tube
Output Type：Transistor Driver
Function：Step-Up/Step-Down
Output Configuration：Positive
Topology：Buck-Boost
Number of Outputs：2
Output Phases：2
Voltage - Supply (Vcc/Vdd)：2.8V ~ 80V
Frequency - Switching：100kHz ~ 400kHz
Duty Cycle (Max)：-
Synchronous Rectifier：Yes
Clock Sync：Yes
Serial Interfaces：-
Control Features：Enable, Frequency Control, Soft Start
Operating Temperature：-40°C ~ 125°C
Mounting Type：Surface Mount
Package / Case：38-TFSOP (0.173", 4.40mm Width) 31 Leads, Exposed Pad
Supplier Device Package：38-TSSOP-EP

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LT8705IFE

Overview

The LT8705IFE is a high-performance synchronous four-switch buck-boost DC/DC controller from Analog Devices. It operates with input voltages ranging from 2.8 V to 80 V and provides an adjustable output voltage from 1.3 V to 80 V. The device supports up to 10 A of output current, making it suitable for wide-input applications. It features a programmable switching frequency between 100 kHz and 400 kHz and draws a typical operating supply current of 2.65 mA. Designed for industrial environments, it functions reliably within a temperature range of -40°C to +125°C.

Feature Summary

Synchronous four-switch topology enabling efficient operation in buck, boost, and pass-through modes
Wide input voltage range supporting supercapacitor backup power applications
Integrated shutdown capability for system power management

Applications

Supercapacitor backup power systems
Industrial power supplies requiring wide input ranges
Automotive electronics with varying bus voltages

Procurement Notes

Verify the specific ordering suffix when purchasing. The LT8705IFE#TRPBF variant includes tape and reel packaging, while the LT8705IFE#PBF variant uses tube packaging. Ensure the selected package matches your assembly requirements. Confirm RoHS compliance status through official manufacturer documentation prior to finalizing procurement orders.

Selection Notes

Select this component for designs requiring a single controller to manage both step-down and step-up conversion needs. The wide input range accommodates sources that may drop below or rise above the target output voltage. Consider the thermal performance of the TSSOP-EP package for high-current applications exceeding standard thermal limits.

Part Context

This part belongs to the LT8705 series of power management ICs. It serves as a versatile solution for applications where input voltage stability cannot be guaranteed. The controller manages external N-channel MOSFETs to regulate the output voltage precisely across all operating modes.