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Product Detailed Parameters
- Description：42V 3.5A BUCK REGULATOR
- Series：LT®8615
- Mfr：Analog Devices Inc.
- Package：Tray
- Function：Step-Down
- Output Configuration：Positive
- Topology：Buck
- Output Type：Adjustable
- Number of Outputs：1
- Voltage - Input (Min)：3V
- Voltage - Input (Max)：42V
- Voltage - Output (Min/Fixed)：0.787V
- Voltage - Output (Max)：41.6V
- Current - Output：3.5A
- Frequency - Switching：400kHz ~ 2.5MHz
- Synchronous Rectifier：Yes
- Operating Temperature：-40°C ~ 150°C (TA)
- Mounting Type：Surface Mount, Wettable Flank
- Package / Case：16-WFQFN Exposed Pad
- Supplier Device Package：16-LFCSP (3x3)
- Grade：-
- Qualification：-
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Overview
The LT8615RUDM#PBF is a synchronous step-down switching regulator from Analog Devices Inc. It delivers 3.5A of continuous output current with an input voltage range up to 42V. The device features adjustable output voltage starting from 0.787V and supports switching frequencies between 400kHz and 2.5MHz. It operates within a temperature range defined by its commercial grade specification and utilizes a 16-lead WDFN package with an exposed pad for thermal management.
Feature Summary
- High efficiency synchronous rectification design
- Wide input voltage capability up to 42V
- Adjustable switching frequency for optimization
- Compact footprint suitable for space-constrained designs
Applications
- Industrial point-of-load regulation
- Automotive electronics power distribution
- Telecommunications infrastructure supplies
- General purpose DC-DC conversion systems
Procurement Notes
Verify the complete part number including suffixes such as #PBF for lead-free compliance when ordering. Confirm package type matches the 16-WFQN configuration. Ensure compatibility with required thermal dissipation methods due to the exposed pad design. Check manufacturer documentation for specific handling and storage conditions related to moisture sensitivity levels.
Selection Notes
Select this component when a wide input voltage range up to 42V is required alongside high current delivery. Consider the adjustable frequency feature if EMI constraints or transient response requirements dictate specific switching speeds. Evaluate thermal performance needs based on the 3.5A output capability and available PCB copper area for heat sinking through the exposed pad.
Part Context
This part belongs to the LT8615 family of high-speed synchronous buck regulators. These devices are designed for applications requiring high efficiency and compact size. The series typically includes various package options and temperature grades to suit different environmental and spatial constraints while maintaining consistent electrical performance characteristics across the product line.
Replacement Considerations
Consult official substitution guides for compatible alternatives. Verify pinout compatibility and electrical specifications before replacing. Ensure thermal resistance values match the existing design constraints.
