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Product Detailed Parameters
- Description：IC REG BUCK ADJ 2.5A 24QFN
- 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)：0.97V
- Voltage - Output (Max)：40V
- Current - Output：2.5A
- Frequency - Switching：200kHz ~ 2.2MHz
- Synchronous Rectifier：Yes
- Operating Temperature：-40°C ~ 125°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：24-WFQFN Exposed Pad
- Supplier Device Package：24-QFN (3x5)
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Overview
The LT8611IUDD#PBF is a synchronous step-down DC-to-DC converter manufactured by Analog Devices Inc. It operates with an input voltage range of 5.4V to 42V and provides a regulated output voltage of 5V at a maximum output current of 2A. The device utilizes a buck topology and supports switching frequencies up to 2MHz, which helps reduce external component size while avoiding AM band interference.
Feature Summary
- Synchronous buck topology for high efficiency
- Wide input voltage capability up to 42V
- Integrated power switches for compact design
Applications
- Point-of-load regulation in industrial systems
- Power supplies for embedded controllers
- Battery-powered equipment requiring wide input ranges
Procurement Notes
Verify the specific suffix #PBF indicates lead-free RoHS compliance when ordering. Confirm the temperature grade 'I' corresponds to industrial specifications. Ensure the DFN package type matches the PCB footprint requirements. Cross-reference the manufacturer part number with official Analog Devices documentation to avoid counterfeit components.
Selection Notes
Select this component for applications requiring a wide input voltage range and moderate output current. The 2MHz switching frequency allows for smaller inductors and capacitors compared to lower-frequency alternatives. Consider thermal performance and heat dissipation requirements given the synchronous buck architecture and enclosed DFN package.
Part Context
This part belongs to the LT8611 family of synchronous step-down regulators from Analog Devices. The family includes variants with different current ratings and input voltage limits. The IUDD#PBF designation specifies the industrial temperature range and lead-free packaging within this product line.
Replacement Considerations
Check for direct pin-compatible replacements within the LT8611 series or similar Analog Devices buck converters. Verify that alternative parts match the 42V input limit and 2A output current requirements. Ensure switching frequency compatibility if EMI filtering is critical.
