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Product Detailed Parameters
- Description：65V 3.5A SILENT SWITCHER
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tube
- Function：Step-Down
- Output Configuration：Positive
- Topology：Buck
- Output Type：Adjustable
- Number of Outputs：1
- Voltage - Input (Min)：2.6V
- Voltage - Input (Max)：65V
- Voltage - Output (Min/Fixed)：0.81V
- Voltage - Output (Max)：65V
- Current - Output：3.5A
- Frequency - Switching：200kHz ~ 3MHz
- Synchronous Rectifier：Yes
- Operating Temperature：-40°C ~ 150°C (TJ)
- Mounting Type：Surface Mount, Wettable Flank
- Package / Case：20-WFQFN Exposed Pad, 18 Leads
- Supplier Device Package：20-QFN (3x4)
- Grade：Automotive
- Qualification：AEC-Q100
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Overview
The LT8641ARUDCM#WPBF is a synchronous step-down Silent Switcher regulator from Analog Devices. It operates with an input voltage range of 5.5V to 65V and delivers up to 3.5A of output current. The device features a positive adjustable output starting at 0.81V, utilizing a single output configuration. Packaged in a 20-WFQFN exposed pad with 18 leads, it integrates high-efficiency switching components designed for compact power solutions.
Feature Summary
- Silent Switcher architecture minimizes electromagnetic interference emissions
- High efficiency synchronous buck conversion design
- Wide input voltage capability supporting industrial applications
Applications
- Industrial distributed power systems
- Point-of-load regulation
- Telecommunications infrastructure
Procurement Notes
Verify the complete part number including suffixes such as WPBF against official Analog Devices documentation to ensure correct packaging and temperature grade specifications. Confirm that the requested component matches the exact electrical ratings and package dimensions required for your specific circuit design before finalizing procurement.
Selection Notes
Select this component when designing systems requiring wide input voltage ranges up to 65V with moderate current demands around 3.5A. The Silent Switcher technology makes it suitable for noise-sensitive environments where minimizing EMI filtering requirements is critical for system compliance and performance optimization.
Part Context
This part belongs to the LT8641A family of Silent Switcher regulators. These devices are engineered to provide high efficiency while significantly reducing radiated EMI compared to traditional buck converters. The family includes variants with different voltage and current ratings to suit various power density requirements in modern electronic designs.
Replacement Considerations
Consult official substitution guides for compatible parts within the LT8641 series or equivalent Silent Switcher architectures. Verify pin compatibility and thermal performance when considering alternative manufacturers' offerings for direct replacement scenarios.
