LT8640HUDCF#TRPBF

$8.05

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

SKU:4872e5aea468 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 ~ 150°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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LT8640HUDCF#TRPBF

Overview

The LT8640HUDCF#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 970mV to 41.58V. Operating frequencies are programmable between 200kHz and 3MHz. The device features a quiescent current of 300µA and operates within a junction temperature range of -40°C to 150°C.

Feature Summary

Integrates Quiet Cycle operation to minimize electromagnetic interference radiation without requiring external shielding or complex filter components.
Features synchronous rectification for high efficiency across wide load and line conditions.
Includes internal compensation and soft-start capabilities to simplify circuit design and ensure stable startup.

Applications

Automotive infotainment systems
Industrial distributed power architectures
Point-of-load regulation for processors and FPGAs

Procurement Notes

Verify the specific suffix 'HUDCF' against official Analog Devices documentation to confirm pinout compatibility and thermal characteristics. Ensure the ordering code matches the required tape-and-reel quantity. Cross-reference the AEC-Q100 qualification status if automotive reliability is mandatory for the target application environment.

Selection Notes

Select this component when high input voltages up to 42V are present alongside strict EMI constraints. The 5A capability suits moderate-to-high current loads where board space is limited. Consider the 200kHz to 3MHz frequency range for optimizing inductor size versus transient response requirements.

Part Context

This part belongs to the LT8640 family of Silent Switcher regulators designed for demanding applications. It shares architectural similarities with other members like the LT8640IUDCF but differs in temperature grade and packaging variations. The family emphasizes low noise performance in compact footprints.