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AOZ2151PQI-05
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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)：14V
- 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 AOZ2151PQI-05 is a high-efficiency, current-mode step-down regulator from Alpha & Omega Semiconductor. It features an integrated high-side and low-side MOSFET, operating with an input voltage range of 14V to 28V. The device delivers a maximum continuous output current of 4A with an adjustable output voltage down to 0.8V ±1%. Packaged in an 18-PowerWFQFN (3x3 mm) surface-mount case, it supports an operating temperature range of -40°C to 85°C.
Feature Summary
- Integrates high-side and low-side power MOSFETs for synchronous rectification
- Supports adjustable output voltage starting from 0.8V
- Operates within a wide input voltage range up to 28V
Applications
- Point-of-load regulation for embedded systems
- Power supply stages for industrial equipment
- Telecommunications infrastructure power distribution
Procurement Notes
Verify the specific suffix '05' against official Alpha & Omega Semiconductor datasheets to confirm pinout and thermal characteristics. Ensure the 18-QFN package dimensions match your PCB footprint requirements. Confirm that the 14V-28V input range aligns with your system's supply rails before finalizing procurement.
Selection Notes
Select this component when a compact solution is required for 4A loads with inputs between 14V and 28V. The integrated MOSFET design reduces external component count compared to discrete solutions. Consider the 18-PowerWFQFN package for space-constrained designs requiring efficient heat dissipation in a small form factor.
Part Context
This part belongs to the EZBuck series of DC/DC buck regulators by Alpha & Omega Semiconductor. The series focuses on providing flexible, easy-to-use switching regulators with integrated FETs. These devices are designed to simplify design processes by minimizing external components while maintaining high efficiency across various load conditions.
Replacement Considerations
Check for other AOZ2151 variants with different current ratings or package options if higher performance is needed. Verify compatibility with existing control loops when substituting with similar synchronous buck regulators from other manufacturers.
