AOZ1034PI

Overview

The AOZ1034PI is a synchronous buck switching regulator IC from Alpha & Omega Semiconductor Inc. It operates within an input voltage range of 4.5V to 18V and delivers up to 4A of continuous output current. The output voltage is adjustable down to 0.8V. The device features a fixed 500kHz PWM switching frequency and includes internal soft start, cycle-by-cycle current limit, pre-bias start-up, short-circuit protection, and thermal shutdown. It is housed in an exposed pad SO-8 package and rated for ambient temperatures between -40°C and +85°C.

Feature Summary

• Synchronous rectification with low on-resistance internal switches
• Integrated protection mechanisms including thermal shutdown and current limiting
• Fixed high-frequency PWM operation for compact external component sizing

Applications

• Point-of-load voltage regulation
• Battery-powered equipment power supplies
• Industrial control systems

Procurement Notes

Verify the specific suffix 'PI' corresponds to the SO-8 exposed pad package variant rather than other available packages like DFN-8. Confirm RoHS compliance status and check for any product change notices or obsolescence alerts from the manufacturer before finalizing procurement plans.

Selection Notes

Select this component when a 4A output capacity is required within a 4.5V to 18V input window. Ensure the application environment stays within the specified -40°C to +85°C operating temperature range. Consider the SO-8 package footprint constraints during PCB layout design.

Part Context

This part belongs to the EZBuck series of synchronous buck regulators. It shares functional similarities with other members like the AOZ1036 but differs in maximum output current ratings. The series is designed for simple, high-efficiency step-down conversion applications requiring minimal external components.

Replacement Considerations

The AOZ6689CI is listed as a similar substitute by distributors. Verify pin compatibility and electrical parameter alignment before substitution.