LT8640IUDCF-1#PBF

$11.85

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

SKU:92c56c4e1a13 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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LT8640IUDCF-1#PBF

Overview

The LT8640IUDCF-1#PBF is a synchronous step-down switching regulator from Analog Devices Inc., featuring Silent Switcher architecture for ultra-low EMI. It supports an input voltage range of 3.4V to 42V and delivers up to 5A output current with adjustable output voltages starting from 0.97V. The device operates at switch frequencies between 210kHz and 2MHz, housed in a 20-WFQFN package with exposed pad.

Feature Summary

Silent Switcher architecture minimizes electromagnetic interference through integrated capacitors and spread spectrum modulation
Ultra-low quiescent current enables high efficiency during light load conditions via Burst Mode operation
High-speed synchronous rectification allows for rapid transient response and compact solution size

Applications

Automotive power supply systems
Industrial point-of-load regulation
General-purpose DC-to-DC conversion

Procurement Notes

Verify the specific suffix 'CF-1' against official Analog Devices documentation to confirm pinout or functional variations. Ensure the ordering code matches the required tape-and-reel packaging format. Cross-reference the AEC-Q100 qualification status if automotive reliability is mandatory for the target application environment.

Selection Notes

Select this component when wide input voltage ranges up to 42V are required alongside high output currents. The Silent Switcher technology is essential for applications with strict EMI constraints without external filtering. Consider the thermal performance of the QFN package for high-power density designs requiring efficient heat dissipation.

Part Context

This part belongs to the LT8640 family of Silent Switcher regulators. It shares architectural similarities with other variants like the LT8640EUDCF but differs in specific electrical parameters and package configurations. The family is designed for high-efficiency power management in space-constrained environments.

Replacement Considerations

LT8640IUDC#TRPBF serves as a standard alternative within the same series. Verify compatibility regarding switching frequency ranges 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.