LT8640IUDCF-1#TRPBF

$11.85

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

SKU:877293cf6728 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),Cut Tape (CT)
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#TRPBF

Overview

The LT8640IUDCF-1#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 3.4 V to 42 V and delivers up to 5 A 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 junction temperature range of -40°C to 125°C.

Feature Summary

Integrates high-side and low-side MOSFETs with integrated shielded inductor architecture for compact design
Features Silent Switcher technology to minimize radiated electromagnetic interference emissions
Includes internal compensation and soft-start circuitry for simplified implementation
Provides thermal shutdown and cycle-by-cycle current limiting protection

Applications

Industrial automation power supplies
Telecommunications infrastructure equipment
Point-of-load regulation for digital signal processors
Automotive infotainment systems

Procurement Notes

Verify the specific suffix 'CF-1' against official Analog Devices documentation to confirm exact electrical tolerances and packaging specifications. Ensure compatibility with required operating temperatures and input voltage ranges for the target application before finalizing procurement orders.

Selection Notes

Select this component when a robust 42V synchronous buck converter with low EMI is required. The wide input voltage range accommodates various bus voltages. Verify that the 5A continuous current rating meets load requirements and that the QFN package fits the available PCB real estate constraints.

Part Context

This part belongs to the LT8640 family of Silent Switcher regulators designed for high-efficiency power conversion. The series offers integrated magnetic shielding to reduce external component count and simplify layout. It targets applications requiring reliable performance in electrically noisy environments.