LT3640EUFD#TRPBF

$4.45

Description：IC REG BUCK ADJ 1.1A/1.3A 28QFN
Series：-
Mfr：Analog Devices Inc.
Package：Tape & Reel (TR)

SKU:f2e85832d492 Category: Voltage Regulators - DC DC Switching Regulators Brand: Analog Devices Inc.

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Product introduction

Product Detailed Parameters

Description：IC REG BUCK ADJ 1.1A/1.3A 28QFN
Series：-
Mfr：Analog Devices Inc.
Package：Tape & Reel (TR)
Function：Step-Down
Output Configuration：Positive
Topology：Buck
Output Type：Adjustable
Number of Outputs：2
Voltage - Input (Min)：2.5V
Voltage - Input (Max)：35V
Voltage - Output (Min/Fixed)：0.6V, 1.265V
Voltage - Output (Max)：33.97V
Current - Output：1.1A, 1.3A
Frequency - Switching：500kHz ~ 2MHz
Synchronous Rectifier：No
Operating Temperature：-40°C ~ 125°C (TJ)
Mounting Type：Surface Mount
Package / Case：28-WFQFN Exposed Pad
Supplier Device Package：28-QFN (4x5)
Grade：-
Qualification：-

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LT3640EUFD#TRPBF

Overview

The LT3640EUFD#TRPBF is a dual monolithic buck switching regulator manufactured by Analog Devices Inc. It operates within an input voltage range of 4 V to 35 V and delivers up to 1.3 A per channel. The device integrates power-on reset and watchdog timer functions, featuring a fixed 2.5 MHz switching frequency and a quiescent current of 275 uA. Designed for industrial applications, it supports operation from -40°C to +125°C and utilizes a QFN-28 package.

Feature Summary

Integrates two independent synchronous buck converters with integrated power switches
Includes built-in power-on reset generator and programmable watchdog timer
Supports wide input voltage range suitable for various bus architectures

Applications

Industrial control systems requiring isolated or non-isolated dual rails
Automotive electronics compliant with automotive temperature grades
Telecommunications infrastructure power distribution networks

Procurement Notes

Verify the specific suffix TRPBF indicates tape-and-reel packaging configuration. Confirm RoHS compliance status through official documentation. Ensure the EU subcode matches project requirements for lead-free assembly processes. Cross-reference the manufacturer part number against current lifecycle notifications to confirm active production status before finalizing procurement plans.

Selection Notes

Select this component when dual low-current buck outputs are required alongside system supervision features. The integrated watchdog and reset functions reduce external component count compared to separate regulator solutions. Verify that the 2.5 MHz fixed frequency aligns with electromagnetic interference constraints and inductor size limitations in the target design.

Part Context

This part belongs to the LT3640 family of dual synchronous step-down regulators. It shares architectural similarities with single-channel variants but provides two regulated outputs in a compact footprint. The series targets applications needing high efficiency and system monitoring capabilities without additional discrete logic components.