LT8705EFE#PBF

$13.93

Description：IC REG CTRLR BUCK-BOOST 38TSSOP
Series：-
Mfr：Analog Devices Inc.
Package：Tube

SKU:f78adbe1aebb Category: DC DC Switching Controllers Brand: Analog Devices Inc.

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Product introduction

Product Detailed Parameters

Description：IC REG CTRLR BUCK-BOOST 38TSSOP
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 (TJ)
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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LT8705EFE#PBF

Overview

The LT8705EFE#PBF is a high-performance synchronous buck-boost switching regulator controller from Analog Devices Inc. It operates with input voltages ranging from 2.8V to 80V and supports output voltages from 1.3V to 80V. The device features a fixed switching frequency range of 100kHz to 400kHz and a quiescent current of 2.65mA. It provides two independent outputs with a maximum output current capability of 10A. The controller includes soft-start, enable, and frequency control features, operating within a temperature range of -40°C to 125°C TJ.

Feature Summary

Synchronous four-switch buck-boost topology supporting input voltages above, below, or equal to the output voltage
Integrated clock synchronization for multi-phase operation
Programmable switching frequency and soft-start functionality
Dual independent channel outputs with enable control

Applications

Supercapacitor backup power systems
Industrial DC-DC conversion requiring wide input ranges
Telecom voltage stabilization applications

Procurement Notes

Verify the specific suffix #PBF indicates tube packaging when ordering. Confirm the 38-TSSOP-EP package availability through authorized distributors. Check for recent production change notices regarding epoxy or bond wire modifications. Ensure compatibility with required thermal management solutions for the exposed pad package. Validate that the selected supplier provides genuine Analog Devices Inc. components.

Selection Notes

Select this controller for designs requiring seamless transition between buck and boost modes without component stress. Consider the 2.8V minimum start-up voltage for low-voltage battery applications. Evaluate the 100kHz to 400kHz frequency range against inductor size constraints. Verify that external MOSFETs support the required voltage and current ratings for the 80V system limit.

Part Context

The LT8705EFE#PBF belongs to the LT8705 family of synchronous buck-boost controllers. It is designed for applications where input voltage fluctuates significantly relative to the output. The part is manufactured by Analog Devices Inc. and utilizes a 38-TSSOP-EP package for efficient heat dissipation.