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AOZ1281DI
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Product Detailed Parameters
- Description：IC REG BUCK ADJ 1.8A 8DFN
- Series：EZBuck™
- Mfr：Alpha & Omega Semiconductor Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Function：Step-Down
- Output Configuration：Positive
- Topology：Buck
- Output Type：Adjustable
- Number of Outputs：1
- Voltage - Input (Min)：3V
- Voltage - Input (Max)：26V
- Voltage - Output (Min/Fixed)：0.8V
- Voltage - Output (Max)：22.1V
- Current - Output：1.8A
- Frequency - Switching：1.5MHz
- Synchronous Rectifier：No
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：8-WFDFN Exposed Pad
- Supplier Device Package：8-DFN-EP (2x2)
- Grade：-
- Qualification：-
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Overview
The AOZ1281DI is a synchronous buck switching regulator IC from Alpha & Omega Semiconductor, part of the EZBuck series. It operates with an input voltage range of 3V to 26V and provides an adjustable output voltage between 0.8V and 22.1V. The device delivers a continuous output current of 1.8A at a fixed switching frequency of 1.5MHz. Housed in an 8-DFN-EP(2x2) package, it supports surface-mount installation and functions within an ambient temperature range of -40°C to 85°C.
Feature Summary
- Integrated synchronous buck topology for efficient step-down conversion without external rectifiers
- Adjustable output voltage capability via external resistor network
- Fixed high-frequency switching operation to minimize passive component size
- Compact footprint design suitable for space-constrained applications
Applications
- Portable consumer electronics requiring regulated power rails
- Industrial control systems needing stable low-voltage supplies
- Embedded computing modules utilizing adjustable DC-DC conversion
Procurement Notes
Verify the specific suffix DI against official datasheets to confirm pinout and thermal pad configuration. Confirm RoHS3 compliance status through manufacturer documentation. Check for obsolescence notices or product change notifications prior to finalizing procurement plans.
Selection Notes
Select this component when a compact, non-synchronous buck solution is not required but higher efficiency is needed. Ensure the load current does not exceed 1.8A. Verify that the required output voltage falls within the 0.8V to 22.1V adjustable range. Consider the 1.5MHz frequency for trade-offs between inductor size and EMI.
Part Context
This device belongs to the EZBuck family of simple buck regulators. It shares functional similarities with other models in the series but differs in output current capacity and switching frequency. The DI suffix indicates the specific package variant used in this listing.
Replacement Considerations
Publicly confirmed substitute part numbers are not available in the provided source material. Consult official replacement guides for equivalent performance specifications.
