LT8705AEUHF#TRPBF

$7.51

Description：IC REG CTRLR BUCK-BOOST 38QFN
Series：-
Mfr：Analog Devices Inc.
Package：Tape & Reel (TR)

SKU:65a7e7dc3f17 Category: DC DC Switching Controllers Brand: Analog Devices Inc.

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Product introduction

Product Detailed Parameters

Description：IC REG CTRLR BUCK-BOOST 38QFN
Series：-
Mfr：Analog Devices Inc.
Package：Tape & Reel (TR)
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-WFQFN Exposed Pad
Supplier Device Package：38-QFN (5x7)

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LT8705AEUHF#TRPBF

Overview

The LT8705AEUHF#TRPBF is a synchronous four-switch buck-boost DC/DC controller from Analog Devices. It supports an input voltage range of 2.85 V to 80 V and delivers up to 10 A output current with regulated voltages between 1.3 V and 80 V. The device operates at a switching frequency of 400 kHz with a quiescent current of 2.65 mA. It features integrated feedback loops for input/output voltage and current monitoring, enabling stable operation when the input voltage is above, below, or equal to the output voltage.

Feature Summary

Synchronous four-switch topology allows continuous regulation regardless of input-to-output voltage relationship
Integrated closed-loop control for input voltage, input current, output voltage, and output current
Supports clock synchronization and soft-start functionality for system stability

Applications

Supercapacitor backup power systems
Industrial power supplies requiring wide input ranges
Telecommunications equipment with varying line voltages

Procurement Notes

Verify component authenticity through authorized distributors. Confirm RoHS compliance status via official documentation. Check lead times as availability may be limited. Ensure ordering suffix matches required packaging format. Validate datasheet revisions against design requirements.

Selection Notes

Select this controller for applications requiring seamless transition between buck and boost modes. Consider thermal management due to high current capabilities. Verify inductor selection aligns with the 400 kHz switching frequency. Ensure external MOSFETs support the 80 V rating. Evaluate system efficiency needs against the specified quiescent current.

Part Context

This component belongs to the LT8705A family of high-performance buck-boost controllers. It shares architectural similarities with other members like the LT8705IUHF but differs in package type and specific electrical characteristics. The EUHF suffix indicates a QFN-38 surface-mount package suitable for compact designs.