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AOZ2151EQI-30
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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)：4V
- Voltage - Output (Max)：7.5V
- 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 AOZ2151EQI-30 is a synchronous buck converter from Alpha & Omega Semiconductor, designed for high-efficiency power management in portable and industrial applications. It integrates two N-channel MOSFETs with a fixed 300kHz switching frequency. The device operates over an input voltage range of 4.5V to 28V, delivering up to 3A output current. Key electrical characteristics include a typical quiescent current of 60µA and a shutdown current below 1µA. It features adjustable soft-start time and precise output voltage regulation via an external resistor divider.
Feature Summary
- Integrated synchronous rectification with low RDS(ON) switches for enhanced efficiency
- Fixed internal switching frequency simplifies external component selection
- Built-in protection mechanisms including thermal shutdown and current limit
- Compact QFN package facilitates space-constrained PCB layouts
Applications
- Portable electronics and mobile devices
- Industrial control systems
- Infotainment and display drivers
Procurement Notes
Verify the specific suffix '30' indicates the fixed output voltage setting or packaging variant as defined in the official datasheet. Confirm pinout compatibility and thermal pad requirements for your PCB design. Ensure the operating temperature range meets your application's environmental specifications before finalizing procurement.
Selection Notes
Select this component when a compact, efficient step-down solution is required for inputs between 4.5V and 28V. Consider the fixed 300kHz frequency for balancing size and performance. Evaluate the need for external compensation if transient response requirements exceed standard specifications. Check availability of compatible passive components for the filter network.
Part Context
This part belongs to the AOZ21xx series of synchronous buck converters. It shares architectural similarities with other models in the family but differs in specific electrical ratings and package options. The EQI suffix denotes a specific lead-free, halogen-free RoHS-compliant package type suitable for automated assembly processes.
Replacement Considerations
Direct substitutes may include other AOZ21xx series variants with similar current ratings and input voltage ranges. Verify equivalent pinout and thermal performance when cross-referencing with competitor parts. Ensure replacement components meet the same regulatory compliance standards.
