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Product Detailed Parameters
- Description：IC REG BUCK ADJ 4A 20QFN
- Series：-
- 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)：3.4V
- Voltage - Input (Max)：42V
- Voltage - Output (Min/Fixed)：3.3V
- Voltage - Output (Max)：30V
- Current - Output：4A
- Frequency - Switching：200kHz ~ 3MHz
- Synchronous Rectifier：No
- Operating Temperature：-55°C ~ 150°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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Overview
The LT8614MPUDC#TRPBF is a synchronous step-down DC/DC converter manufactured by Analog Devices Inc. It features a wide input voltage range up to 42V and delivers an output current of 4A. The device integrates Silent Switcher architecture to minimize electromagnetic interference (EMI) without requiring external filtering components. It operates with a fixed switching frequency and includes programmable soft-start functionality. The component is housed in a thermally enhanced 20-lead 3mm x 4mm DFN package, designed for efficient heat dissipation in compact power supply designs.
Feature Summary
- Integrates Silent Switcher technology to reduce EMI emissions
- Supports high-efficiency synchronous buck conversion
- Includes internal compensation and soft-start control
Applications
- Industrial point-of-load regulation
- Automotive electronics power distribution
- Telecommunications infrastructure supplies
Procurement Notes
Verify the specific suffix MPUDC against official Analog Devices documentation to confirm temperature grade and packaging specifications. Ensure compatibility with required thermal management solutions given the DFN package type. Cross-reference the manufacturer part number directly with authorized distributors to avoid counterfeit components. Confirm RoHS compliance status through the latest datasheet revision.
Selection Notes
Select this component when designing systems requiring high input voltages up to 42V with significant output current capabilities. The integrated Silent Switcher feature makes it suitable for noise-sensitive applications where external EMI filters are undesirable. Consider the thermal performance of the 3mm x 4mm DFN package relative to the expected load conditions and ambient temperature constraints.
Part Context
This part belongs to the LT8614 family of micropower synchronous step-down converters. The series is characterized by its ability to handle high input voltages while maintaining low quiescent current. The Silent Switcher architecture distinguishes these devices by embedding switching nodes within the package to contain radiated emissions.
Replacement Considerations
Consult official Analog Devices substitution guides for verified equivalents. Generic replacements may not match the Silent Switcher EMI performance or the specific 42V input rating.
