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AOZ2151QI-01
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Product Detailed Parameters
- Description：IC REG BUCK ADJ 4A 18QFN
- 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)：6.5V
- Voltage - Input (Max)：28V
- Voltage - Output (Min/Fixed)：0.8V
- Voltage - Output (Max)：23.8V
- Current - Output：4A
- Frequency - Switching：1MHz
- Synchronous Rectifier：Yes
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：18-PowerWFQFN
- Supplier Device Package：18-QFN (3x3)
- Grade：-
- Qualification：-
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Overview
The AOZ2151QI-01 is a synchronous step-down switching regulator IC from Alpha & Omega Semiconductor Inc., part of the EZBuck series. It supports an input voltage range of 6.5V to 28V and delivers up to 4A of output current. The device features a fixed 1MHz switching frequency and provides a single adjustable positive output ranging from 4V to 7.5V. Packaged in a compact 18-PowerWFQFN (3x3mm) surface-mount footprint, it integrates internal high-side and low-side power switches for efficient power conversion.
Feature Summary
- Integrates synchronous rectification with internal high-side and low-side N-channel MOSFETs
- Features fixed 1MHz switching frequency for optimized external component size
- Includes comprehensive protection mechanisms such as over-current, thermal shutdown, and undervoltage lockout
Applications
- Point-of-load regulation for embedded systems
- Power supply stages for industrial control equipment
- Voltage regulation for consumer electronics devices
Procurement Notes
Verify the specific suffix QI-01 against official Alpha & Omega Semiconductor datasheets to confirm pinout compatibility and electrical specifications. Ensure that the 18-PowerWFQFN package dimensions align with your PCB layout requirements. Confirm RoHS compliance status through manufacturer documentation prior to integration into final products.
Selection Notes
Select this component when a compact, high-efficiency buck converter is required for inputs up to 28V. The fixed 1MHz frequency allows for smaller inductors and capacitors compared to lower-frequency alternatives. Consider the 4A continuous current capability and the adjustable output voltage range to ensure it meets the specific load requirements of the target application circuit.
Part Context
This device belongs to the EZBuck family of synchronous regulators designed by Alpha & Omega Semiconductor. These integrated solutions combine control logic with power switches to simplify design. The AOZ2151 variant specifically targets applications requiring moderate current levels with high efficiency and minimal external component count within a small form factor.
Replacement Considerations
Officially documented similar parts include AOZ2151EQI-30 and AOZ2151LQI-30. Verify if alternative suffixes indicate differences in temperature range or packaging material. Cross-reference pinouts and electrical parameters with the original datasheet before substitution.
