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AOZ1052PI
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Product Detailed Parameters
- Description：IC REG BUCK ADJ 4A 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：4A
- 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 AOZ1052PI is a high-efficiency synchronous buck regulator from the EZBuck series by Alpha & Omega Semiconductor. It delivers up to 4 A of continuous output current with an input voltage range of 4.5 V to 18 V. The device integrates power switches and operates at switching frequencies up to 500 kHz, enabling the use of small external inductors and capacitors. It features adjustable output voltage via external resistors, thermal shutdown, and overcurrent protection. Packaged in an 8-SO-EP (Exposed Pad) for enhanced thermal performance.
Feature Summary
- Integrates high-side and low-side N-channel power MOSFETs for high efficiency
- Fixed internal frequency reduces external component count
- Includes thermal shutdown and cycle-by-cycle current limit protection
- Adjustable output voltage through external resistor divider
Applications
- Point-of-load regulation for industrial equipment
- Power supplies for embedded systems
- Battery-powered devices requiring efficient step-down conversion
Procurement Notes
Verify the exact suffix 'PI' corresponds to the SOIC-8 package with exposed pad. Confirm product status as obsolete or active through official manufacturer channels before procurement planning. Ensure compatibility with existing PCB footprint and thermal design requirements.
Selection Notes
Select this component when a compact, high-current synchronous buck solution is required within a 4.5 V to 18 V input range. Consider the 8-SO-EP package for thermal management needs. Evaluate if the fixed frequency and integrated switch topology meet system size and efficiency constraints compared to asynchronous alternatives.
Part Context
Part of the EZBuck family, designed for simple, high-efficiency DC-DC conversion. The AOZ1052PI specifically targets applications needing higher current than the 2 A AOZ1050PI while maintaining ease of use. It shares architectural similarities with other members in the series but offers increased output capability.
Replacement Considerations
Check for direct pin-compatible substitutes from Alpha & Omega or other manufacturers offering similar 4 A synchronous buck regulators in SOIC-8 packages. Verify electrical parameters and thermal characteristics match original design requirements.
