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AOZ1053PI
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Product Detailed Parameters
- Description：IC REG BUCK ADJ 5A 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：5A
- Frequency - Switching：450kHz
- 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 AOZ1053PI is a synchronous buck regulator from Alpha & Omega Semiconductor Inc., part of the EZBuck series. It delivers up to 5A continuous output current with an input voltage range of 4.5V to 18V. The device features internal high-side and low-side switches, achieving efficiencies up to 95%. Key electrical parameters include a 500kHz switching frequency, adjustable output voltage down to 0.8V, and integrated protection mechanisms such as thermal shutdown and cycle-by-cycle current limit.
Feature Summary
- Synchronous buck topology with integrated high-side and low-side power switches
- Adjustable output voltage capability starting from 0.8V
- Integrated protection against over-temperature and short-circuit conditions
Applications
- Point-of-load DC/DC converters
- LCD TV power supplies
- Set-top boxes
- DVD and Blu-ray players/recorders
- Cable modems
Procurement Notes
Verify the specific suffix 'PI' corresponds to the SO-8 package variant when sourcing. Confirm that the component meets RoHS compliance standards required for your assembly process. Ensure the supplier provides valid traceability documentation for the manufacturing lot. Cross-reference the datasheet revision date to guarantee parameter accuracy during integration.
Selection Notes
Select this component for applications requiring up to 5A output current within a 4.5V to 18V input range. Consider the 500kHz switching frequency for inductor size optimization. Evaluate the need for external soft-start timing if pre-bias start-up behavior requires specific control. Compare thermal performance requirements against the exposed pad package capabilities.
Part Context
This part belongs to the EZBuck family of synchronous buck regulators by Alpha & Omega Semiconductor. The series includes variants with different current ratings, such as the 2A, 3A, and 4A models. The AOZ1053PI specifically targets higher current demands while maintaining the same compact footprint and ease-of-use characteristics as its lower-current counterparts.
Replacement Considerations
Direct substitutes within the same family include the AOZ1056AI (2A) and AOZ1057AI (3A), though these offer lower current capacity. For identical 5A performance, verify availability of other manufacturers' synchronous buck regulators with matching 4.5V-18V input ranges and SO-8 packaging.
