LT8640JUDCF#TRPBF

$6.88

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

SKU:18779338a5e6 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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LT8640JUDCF#TRPBF

Overview

The LT8640JUDCF#TRPBF is a synchronous step-down Silent Switcher regulator from Analog Devices, designed for high-efficiency power conversion. It supports an input voltage range of 3.4V to 42V and delivers up to 5A of output current. The device features an adjustable output voltage ranging from 970mV to 41.58V with a programmable switching frequency between 200kHz and 3MHz. It operates within a junction temperature range of -40°C to 150°C and holds AEC-Q100 automotive qualification. The component is housed in a 20-WFQFN package with exposed pad and is supplied in tape and reel packaging.

Feature Summary

Integrates Silent Switcher technology to minimize electromagnetic interference (EMI) radiation without requiring external shielding or complex layout techniques.
Features synchronous rectification architecture to enhance conversion efficiency across varying load conditions.
Includes integrated soft-start functionality to limit inrush current during startup sequences.

Applications

Automotive infotainment systems
ADAS sensor power supplies
Industrial distributed power architectures

Procurement Notes

Verify the specific suffix #TRPBF confirms tape and reel packaging rather than tube. Confirm the J grade indicates automotive qualification status. Ensure compatibility with the target PCB footprint for the 20-WFEN package. Validate that the 42V maximum input rating aligns with system transient requirements.

Selection Notes

Select this part when automotive reliability and low EMI are critical constraints. The wide input range accommodates 12V and 24V nominal systems with significant transients. Consider the thermal performance of the exposed pad design for heat dissipation. Compare against non-automotive grades if cost sensitivity outweighs qualification requirements.

Part Context

This component belongs to the LT8640 family of Silent Switcher regulators. It shares architectural similarities with other members like the LT8640IUDCF but differs in qualification grade and operating temperature specifications. The family emphasizes compact solutions for noise-sensitive applications.