LT8640EUDCF-1#PBF

$10.93

Description：IC REG BUCK ADJ 5A 20QFN
Series：Silent Switcher®1
Mfr：Analog Devices Inc.
Package：Tube

SKU:f117c32beba9 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：Tube
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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LT8640EUDCF-1#PBF

Overview

The LT8640EUDCF-1#PBF is a synchronous step-down Silent Switcher regulator from Analog Devices, housed in a QFN-18 package. It supports an input voltage range of 3.4 V to 42 V and delivers up to 5 A of output current. The adjustable output voltage spans from 970 mV to 41.9 V. Operating frequencies are programmable between 200 kHz and 3 MHz. Quiescent current is specified at 1.7 uA. The device operates within a temperature range of -40°C to +125°C.

Feature Summary

Integrates Silent Switcher technology for low electromagnetic interference performance
Features synchronous buck topology with integrated power switches
Includes shutdown control for power management

Applications

Industrial equipment power distribution
Telecommunications infrastructure systems
Automotive electronics applications

Procurement Notes

Verify the specific suffix EUDCF-1 against official datasheets to confirm pinout and thermal pad configuration. Ensure compatibility with the required operating temperature range of -40°C to +125°C. Confirm RoHS compliance status through manufacturer documentation before integration into final assemblies.

Selection Notes

Select this component when a 42V input rating and 5A continuous current capability are required in a compact QFN-18 footprint. Consider the 1.7 uA quiescent current for standby efficiency requirements. Evaluate the 200 kHz to 3 MHz frequency range against external inductor size constraints and noise sensitivity needs.

Part Context

This part belongs to the LT8640 family of high-voltage synchronous buck converters. It shares core architecture with variants like LT8640IUDC-1#PBF but differs in grade and packaging details. The series is designed for demanding environments requiring robust voltage regulation and low EMI emissions.

Replacement Considerations

LT8640IUDC-1#PBF and LT8640JUDCF-1#PBF are related parts within the same family. Verify electrical specifications and package dimensions before substitution.

How to buy

Online and offline orders are supported. If the item is available for online purchase, you can place it in the cart; for wholesale pricing, please contact our product manager for a quote.

Payment Method

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Delivery time

In-stock items usually ship within 24 hours. Otherwise, shipment is arranged 1 to 2 days after the items arrive at our warehouse. Timing depends on destination and shipping method.

Freight calculation

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Mode of Transportation

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Return and Refund

Returns are accepted within 60 days of invoice with RMA approval. Items must be resalable; original invoice and test report are required. No returns for customer errors.