LT8641EUDC#PBF

$8.82

Description：IC REG BUCK ADJ 3.5A 20QFN
Series：Silent Switcher®1
Mfr：Analog Devices Inc.
Package：Tube

SKU:48020c90c863 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 3.5A 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)：3V
Voltage - Input (Max)：65V
Voltage - Output (Min/Fixed)：0.8V
Voltage - Output (Max)：64.35V
Current - Output：3.5A
Frequency - Switching：210kHz ~ 2MHz
Synchronous Rectifier：Yes
Operating Temperature：-40°C ~ 125°C (TJ)
Mounting Type：Surface Mount
Package / Case：20-WFQFN, 18 Leads, Exposed Pad
Supplier Device Package：20-QFN (3x4)
Grade：-
Qualification：-

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LT8641EUDC#PBF

Overview

The LT8641EUDC#PBF is a synchronous step-down DC-to-DC converter featuring Silent Switcher architecture for ultra-low EMI. It supports an input voltage range of 3V to 65V and delivers up to 3.5A continuous output current. The device operates with a programmable switching frequency from 210kHz to 2MHz, enabling high efficiency across various load conditions. It includes features such as burst mode operation for low quiescent current, fast minimum top switch turn-on time, and adjustable soft-start. The component is housed in a compact 20-WFQFN package suitable for surface mount applications.

Feature Summary

Silent Switcher architecture minimizes electromagnetic interference emissions
Wide input voltage range supporting high step-down conversion ratios
Programmable switching frequency allows optimization for size and efficiency
Burst mode operation ensures high efficiency at light loads

Applications

Automotive electronics systems
Industrial power supplies
General-purpose point-of-load regulation

Procurement Notes

Verify the specific suffix against official Analog Devices documentation to confirm temperature grade and packaging details. Ensure compatibility with design requirements regarding thermal performance and pinout configuration. Cross-reference datasheet revisions to validate electrical characteristics and mechanical dimensions prior to integration.

Selection Notes

Select this component when designing circuits requiring wide input voltage tolerance and strict EMI constraints. The Silent Switcher technology is ideal for space-constrained applications where external filtering is limited. Consider the maximum output current capability relative to thermal management solutions available in the target enclosure.

Part Context

This part belongs to the LT8641 family of Silent Switcher regulators. It shares architectural similarities with other devices in the series but is distinguished by its specific input voltage range and output current rating. The family emphasizes high efficiency and low noise for demanding power management applications.