S-8520A33MC-AVST2U

Overview

The S-8520A33MC-AVST2U is a step-down switching regulator controller manufactured by ABLIC Inc. It operates within an input voltage range of 2.5 V to 16 V and delivers a fixed output voltage of 3.3 V. The device supports a switching frequency of 300 kHz and features a typical quiescent current of 100 uA. It is housed in a compact SOT-23-5 package and functions across a temperature range of -40°C to +85°C.

Feature Summary

• Integrates a synchronous rectification architecture for efficient power conversion
• Includes built-in protection mechanisms against overcurrent and thermal overload
• Supports external synchronization to align switching frequency with system clocks

Applications

• Portable battery-powered electronic devices
• Industrial control systems requiring stable low-voltage rails
• Automotive infotainment and sensor modules

Procurement Notes

Verify the specific suffix AVST2U against the official datasheet to confirm pinout compatibility and marking codes. Confirm RoHS compliance status and check for any recent design changes or obsolescence notices from ABLIC before finalizing procurement plans.

Selection Notes

Select this component when a fixed 3.3 V output is required from a 2.5 V to 16 V input source. Ensure the application demands a 300 kHz switching frequency and fits within the SOT-23-5 footprint constraints. Verify that the load current requirements are met by the external MOSFET selection compatible with this controller.

Part Context

This part belongs to the S-8520 series of DC-DC switching regulators from ABLIC. The series is designed for high-efficiency power management in space-constrained applications. The S-8520A variant specifically denotes the fixed output voltage configuration within the product family.

Replacement Considerations

Check for direct cross-references within the S-8520 series, such as S-8520B33MC-AVST2U, which may offer different packaging or tolerance options. Verify electrical parameter equivalence before substitution.