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Product Detailed Parameters
- Description：42V 3.5A BUCK REGULATOR
- Series：LT®8615
- 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)：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#TRPBF is a compact, high-efficiency, high-speed synchronous monolithic step-down switching regulator manufactured by Analog Devices. It delivers 3.5A of continuous output current and operates with an input voltage range from 3V to 42V. The device features a low quiescent current of 2.5μA and supports adjustable switching frequencies up to 2.5MHz. Packaged in a 16-pin QFN, it integrates internal power switches for space-constrained designs.
Feature Summary
- High efficiency synchronous buck topology
- Low quiescent current operation
- Compact surface-mount packaging
Applications
- Industrial point-of-load regulation
- Automotive electronics systems
- Distributed power architectures
Procurement Notes
Verify the specific suffix TRPBF indicates tape-and-reel packaging when ordering. Confirm the operating temperature range and pinout compatibility with your PCB footprint. Ensure input voltage does not exceed the 42V absolute maximum rating during transient conditions.
Selection Notes
Select this component for applications requiring high current density and wide input voltage ranges. Compare against non-synchronous alternatives if efficiency at light loads is critical. Verify that the external compensation network meets stability requirements for the specific output capacitance used.
Part Context
This part belongs to the LT8615 family of synchronous step-down regulators. It shares architectural similarities with other high-voltage buck converters but offers specific integration levels and thermal performance characteristics defined by its QFN-16 package and internal switch ratings.
Replacement Considerations
Check for LT8615 variants with different package options or temperature grades. Verify functional compatibility with existing control loops before substituting.
