LT3667EUDD

Description：IC REG TRIPLE BUCK/LINEAR 24QFN
Series：-
Mfr：Analog Devices Inc.
Package：Tube

SKU:a8d2b37aa33a Category: Voltage Regulators - Linear + Switching Brand: Analog Devices Inc.

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Product introduction

Product Detailed Parameters

Description：IC REG TRIPLE BUCK/LINEAR 24QFN
Series：-
Mfr：Analog Devices Inc.
Package：Tube
Topology：Step-Down (Buck) (1), Linear (LDO) (2)
Number of Outputs：3
Frequency - Switching：243kHz ~ 2.2MHz
Voltage/Current - Output 1：1.2V ~ 38.6V, 400mA
Voltage/Current - Output 2：0.8V ~ 38.6V, 200mA
Voltage/Current - Output 3：0.8V ~ 38.6V, 200mA
w/LED Driver：No
w/Supervisor：No
w/Sequencer：No
Voltage - Supply：1.6V ~ 45V
Operating Temperature：-40°C ~ 125°C
Mounting Type：Surface Mount
Package / Case：24-WFQFN Exposed Pad
Supplier Device Package：24-QFN (3x5)
Grade：-
Qualification：-

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LT3667EUDD

Overview

The LT3667EUDD is a monolithic power management IC featuring one synchronous buck converter and two low-dropout linear regulators. It operates with an input voltage range of 1.6V to 45V. The switching regulator provides up to 400mA output current, while the LDOs deliver 200mA each. Integrated fault protection includes overvoltage, overcurrent, and thermal shutdown. The device supports adjustable switching frequencies from 243kHz to 2.2MHz and functions within a temperature range of -40°C to +125°C in a 24-lead QFN package.

Feature Summary

Integrates a high-efficiency synchronous buck converter with two independent LDOs for combined switching and linear regulation capabilities.
Includes comprehensive fault protection mechanisms such as overvoltage clamp, cycle-by-cycle current limiting, and thermal shutdown.
Supports flexible frequency adjustment via external resistor or synchronization to an external clock signal.

Applications

Portable electronic devices requiring mixed-mode power distribution
Industrial control systems with varying load requirements
Automotive infotainment and sensor modules

Procurement Notes

Verify component authenticity through authorized Analog Devices distributors. Confirm RoHS compliance status and check for obsolete status indicators on official channels. Ensure packaging integrity matches specified surface-mount requirements. Validate datasheet revisions against procurement documents to confirm pinout and electrical specifications remain unchanged.

Selection Notes

Evaluate input voltage stability against the 1.6V to 45V operating range. Assess thermal performance requirements given the exposed pad QFN package. Determine if the integrated fault protections meet system safety standards. Consider external component selection for frequency setting and output filtering based on specific load dynamics.

Part Context

This component belongs to the LT3667 family of hybrid power management solutions. It combines switching efficiency with linear regulator precision. The EUDD suffix denotes a specific lead-free tape and reel packaging configuration suitable for automated surface-mount assembly processes.