LT8640JUDCF#PBF

$10.42

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

SKU:0652bbfc6a0c Category: Voltage Regulators - DC DC Switching Regulators Brand: Analog Devices Inc.

Consult the customer manager about the wholesale price.

consultation hotline：86-132-6715-2157

email：[email protected]
Contact the product manager for consultation. One-stop consultation is available.

Do you want a lower wholesale price? Please send us your inquiry and we will reply immediately.

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：-

Download product information

LT8640JUDCF#PBF

Overview

The LT8640JUDCF#PBF is a synchronous step-down Silent Switcher regulator from Analog Devices, housed in an 18-lead QFN package. It supports input voltages from 3.4 V to 42 V and delivers up to 5 A of output current. The adjustable output voltage ranges from 970 mV to 41.9 V with a switching frequency between 200 kHz and 3 MHz. Quiescent current is 2.5 µA, and the device operates within a junction temperature range of -40°C to +125°C.

Feature Summary

Integrates Silent Switcher architecture for minimized electromagnetic interference radiation without external filters.
Features synchronous rectification for high efficiency across wide load and line conditions.
Includes internal compensation and soft-start capabilities to simplify circuit design.

Applications

Automotive infotainment and body control modules
Industrial distributed power systems
Telecommunications base station power distribution

Procurement Notes

Verify the specific suffix against official Analog Devices documentation to confirm package type and tape/reel specifications. Ensure the component meets required automotive qualification standards if deployed in vehicle applications. Cross-reference datasheet revisions to confirm pinout compatibility and thermal performance characteristics before finalizing procurement orders.

Selection Notes

Select this part when a compact solution is required for 42V automotive or industrial inputs. The Silent Switcher technology is critical for noise-sensitive environments where EMI filtering adds bulk. Compare quiescent current requirements against the LT8640I variant if lower no-load consumption is necessary for battery-backed systems.

Part Context

This component belongs to the LT8640 family of synchronous buck converters designed for high-density power conversion. It shares architectural similarities with other Silent Switcher devices but is optimized for 5A continuous output in a small footprint. The J-grade designation typically indicates specific automotive reliability testing compliance within the broader product line.