LT8640IUDCF#TRPBF

$6.59

Description：IC REG BUCK ADJ 5A 20QFN
Series：Silent Switcher®1
Mfr：Analog Devices Inc.
Package：Tape & Reel (TR)

SKU:23710b9f7a22 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 5A 20QFN
Series：Silent Switcher®1
Mfr：Analog Devices Inc.
Package：Tape & Reel (TR)
Function：Step-Down
Output Configuration：Positive
Topology：Buck
Output Type：Adjustable
Number of Outputs：1
Voltage - Input (Min)：3.4V
Voltage - Input (Max)：42V
Voltage - Output (Min/Fixed)：0.97V
Voltage - Output (Max)：42V
Current - Output：5A
Frequency - Switching：210kHz ~ 2MHz
Synchronous Rectifier：Yes
Operating Temperature：-40°C ~ 125°C (TJ)
Mounting Type：Surface Mount, Wettable Flank
Package / Case：20-WFQFN, 18 Leads, Exposed Pad
Supplier Device Package：20-QFN (3x4)
Grade：-
Qualification：-

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LT8640IUDCF#TRPBF

Overview

The LT8640IUDCF#TRPBF is a synchronous step-down Silent Switcher regulator from Analog Devices, housed in a 20-WFQFN package with exposed pad. It supports an input voltage range of 3.4V to 42V and delivers up to 5A output current. The adjustable output voltage spans from 0.97V to 41.9V. Operating frequencies are programmable between 200kHz and 3MHz. Quiescent current is specified at 1.7µA. The device operates within a junction temperature range of -40°C to +125°C.

Feature Summary

Integrates Silent Switcher technology to minimize electromagnetic interference radiation without requiring external shielding or complex layout techniques.
Features synchronous rectification for high efficiency across the load and line regulation ranges.
Includes integrated soft-start functionality to limit inrush current during power-up sequences.

Applications

Industrial automation controllers
Distributed power supply architectures
Telecommunications infrastructure equipment

Procurement Notes

Verify the specific suffix 'CF' against the manufacturer's official datasheet to confirm it denotes the correct tape and reel packaging configuration. Ensure the component meets AEC-Q100 qualification requirements if automotive grade compliance is necessary for the target application environment.

Selection Notes

Select this component when a compact solution is required for 42V input systems needing low EMI performance. The wide switching frequency range allows optimization for either size or efficiency. Verify that the thermal dissipation capabilities of the 20-QFN package align with the expected ambient conditions and load profiles.

Part Context

This part belongs to the LT8640 family of Silent Switcher regulators designed for high-efficiency power conversion. The series offers various packages and temperature grades to suit different industrial and automotive applications while maintaining consistent electrical performance characteristics.