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Product Detailed Parameters
- Description：IC REG BUCK ADJ 2A 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)：65V
- Voltage - Output (Min/Fixed)：0.97V
- Voltage - Output (Max)：64.75V
- Current - Output：2A
- 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)
- Grade：-
- Qualification：-
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Overview
The LT8620EUDD is a compact, high-efficiency, high-speed synchronous monolithic step-down switching regulator from Analog Devices Inc. It accepts a wide input voltage range of 5.5V to 65V and delivers up to 2A output current. The device features a low quiescent current of 2.5µA and supports an adjustable output voltage starting from 0.97V. Operating with a buck-synchronous topology, it achieves efficiencies up to 94%. Packaged in a 24-WFQFN exposed pad for surface mount applications, it integrates top and bottom power switches to minimize external component requirements.
Feature Summary
- Integrates top and bottom power switches with necessary circuitry to reduce external component count
- Supports wide input voltage range up to 65V with micropower quiescent current consumption
- Delivers high efficiency and high-speed synchronous step-down regulation
Applications
- DC-DC conversion systems requiring wide input voltage ranges
- Battery-powered equipment needing low quiescent current operation
- Industrial control systems utilizing synchronous buck regulation
Procurement Notes
Verify the complete part number including suffixes such as #PBF or #TRPBF to ensure correct packaging and lead-free compliance. Confirm the package type matches the design footprint, specifically the 24-WFQFN exposed pad configuration. Cross-reference the manufacturer's latest datasheet for any updates on recommended operating conditions and thermal characteristics before finalizing procurement specifications.
Selection Notes
Select this component when a wide input voltage range up to 65V is required alongside high efficiency and low standby current. Ensure the application demands a synchronous buck topology with an adjustable output voltage down to 0.97V. Verify that the PCB layout can accommodate the 24-WFQFN package and that thermal management strategies align with the exposed pad requirements for optimal performance under load.
Part Context
The LT8620EUDD belongs to the LT8620 family of synchronous step-down regulators manufactured by Analog Devices Inc. This series is designed for applications requiring high efficiency and minimal external components. The EUDD designation specifies the specific package variant, which is a 24-lead WDFN (or WFQFN) with an exposed pad, suitable for surface-mount assembly in space-constrained designs.
Replacement Considerations
Consult Analog Devices documentation for direct pin-compatible alternatives within the same product family. Verify that any substitute maintains the 65V input rating and 2A output capability. Ensure thermal performance and package dimensions match the existing board layout constraints before implementing any cross-references.
