AOZ1037PI-01

Overview

The AOZ1037PI-01 is a high-efficiency, synchronous buck regulator from the EZBuck series by Alpha & Omega Semiconductor. It operates within an input voltage range of 4.5V to 18V and delivers up to 5A of continuous output current. The output voltage is adjustable down to 0.8V. Key electrical parameters include a fixed 500kHz PWM switching frequency, internal soft start, and cycle-by-cycle current limit. The device features integrated protection mechanisms such as thermal shutdown and short-circuit protection. It is housed in an exposed pad SO-8 package and is rated for ambient temperatures between -40°C and +85°C.

Feature Summary

• Synchronous rectification with low on-resistance internal switches
• Integrated protection including thermal shutdown and short-circuit protection
• Fixed 500kHz PWM operation for consistent performance
• Active high power good state indication

Applications

• Point of load DC/DC conversion
• LCD TVs
• Set top boxes
• DVD / Blu-ray players/recorders
• Cable modems

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm the specific suffix '-01' matches design requirements, as it may denote revision or packaging variations. Check RoHS compliance status and moisture sensitivity level (MSL) before assembly. Ensure supply chain stability given potential end-of-life status.

Selection Notes

Select this regulator for applications requiring a compact solution with high efficiency and simple external component count. The 5A output capability suits moderate power loads. Consider the 500kHz fixed frequency when designing filter components. Verify that the input voltage range of 4.5V to 18V aligns with system power rails. Evaluate thermal performance due to the exposed pad package requirement for heat dissipation.

Part Context

The AOZ1037 belongs to the EZBuck family of synchronous buck regulators designed for simplicity and efficiency. This series targets cost-sensitive consumer and industrial electronics. The AOZ1037PI-01 variant specifically utilizes the SO-8 exposed pad package, balancing thermal performance with board space constraints common in portable and embedded devices.

Replacement Considerations

AOZ6689CI is listed as a similar alternative by the manufacturer.