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AOZ1051PI_2
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Product Detailed Parameters
- Description：IC REG BUCK ADJ 3A 8SO
- Series：EZBuck™
- Mfr：Alpha & Omega Semiconductor Inc.
- Package：Tape & Reel (TR)
- Function：Step-Down
- Output Configuration：Positive
- Topology：Buck
- Output Type：Adjustable
- Number of Outputs：1
- Voltage - Input (Min)：4.5V
- Voltage - Input (Max)：18V
- Voltage - Output (Min/Fixed)：0.8V
- Voltage - Output (Max)：15.3V
- Current - Output：3A
- Frequency - Switching：500kHz
- Synchronous Rectifier：Yes
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：8-SOIC (0.154", 3.90mm Width) Exposed Pad
- Supplier Device Package：8-SO-EP
- Grade：-
- Qualification：-
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Overview
The AOZ1051PI is a high-efficiency, easy-to-use 3 A synchronous buck regulator from Alpha & Omega Semiconductor. It operates within an input voltage range of 4.5 V to 18 V and provides up to 3 A of continuous output current with an adjustable output voltage down to 0.8 V. The device features internal switches with 70 mΩ high-side and 40 mΩ low-side resistance at 12 V, achieving up to 95% efficiency. It includes cycle-by-cycle current limit, pre-bias start-up, short-circuit protection, and thermal shutdown.
Feature Summary
- Synchronous buck topology with integrated high-side and low-side power switches for high efficiency.
- Adjustable output voltage capability down to 0.8 V with external soft-start control.
- Comprehensive protection mechanisms including cycle-by-cycle current limiting, short-circuit protection, and thermal shutdown.
Applications
- Point-of-load DC/DC converters
- LCD TV systems
- Set-top boxes
- DVD and Blu-ray players/recorders
- Cable modems
Procurement Notes
Verify the exact suffix designation against manufacturer documentation, as standard listings typically reference AOZ1051PI. Confirm package type and pinout compatibility during integration. Check for RoHS compliance status and environmental certifications required for your specific application region. Ensure supply chain stability given potential lifecycle changes in power management ICs.
Selection Notes
Select this component for applications requiring a compact, high-efficiency step-down solution with 3 A output capability. It is suitable where input voltages range between 4.5 V and 18 V. Consider the exposed pad SO-8 package for thermal performance. Evaluate if the fixed 500 kHz switching frequency meets EMI requirements for the target system.
Part Context
The AOZ1051PI belongs to the EZBuck family of synchronous buck regulators designed for simplicity and high performance. It integrates power switches and control logic into a small footprint, reducing external component count. This series targets portable electronics and consumer appliances needing reliable DC/DC conversion.
Replacement Considerations
Public confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with existing designs before considering alternatives from other manufacturers or different product lines within Alpha & Omega Semiconductor.
