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Product Detailed Parameters
- Description：IC REG BUCK ADJ 4A 20QFN
- 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)：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：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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Overview
The LT8614IUDC#PBF is a synchronous step-down DC/DC converter manufactured by Analog Devices Inc. It operates with an input voltage range of 3.4 V to 42 V and delivers up to 4 A of output current. The device features an adjustable switching frequency from 200 kHz to 3 MHz and maintains a low quiescent current of 1.7 uA. Housed in a QFN-18 package, it supports operation temperatures between -40°C and +125°C.
Feature Summary
- Integrates Silent Switcher technology to minimize radiated electromagnetic interference without requiring external shielding components.
- Provides synchronous buck conversion topology for high efficiency across wide input voltage ranges.
- Features adjustable switching frequency allowing optimization for specific size and performance requirements.
Applications
- Industrial automation systems
- Telecommunications infrastructure equipment
- Point-of-load regulation modules
Procurement Notes
Verify the exact suffix against official Analog Devices documentation to confirm RoHS compliance and lead-free status. Confirm package marking codes match the QFN-18 specification. Ensure compatibility with the intended thermal management solution given the surface mount design. Check for any specific ordering restrictions or limited availability notices directly from the manufacturer.
Selection Notes
Select this component when a compact, high-efficiency solution is required for inputs up to 42V. The adjustable frequency allows designers to balance between component size and noise performance. Verify that the 4A continuous current rating meets the load requirements under all operating temperature conditions.
Part Context
This part belongs to the LT8614 series of Silent Switcher regulators. It is designed for applications demanding low EMI and high power density. The series integrates power switches and control logic into a single compact package to simplify board layout and reduce overall system footprint.
Replacement Considerations
Consult official Analog Devices substitution guides for verified alternatives. Cross-reference pinouts and electrical specifications carefully before replacing.
