S-8520B32MC-ARRT2U

Overview

The S-8520B32MC-ARRT2U is a step-down switching regulator controller manufactured by ABLIC Inc. It operates with a fixed switching frequency of 300 kHz and features a low quiescent current of 100 uA. The device supports an input voltage range from 2.5 V to 16 V and provides a fixed output voltage of 3.2 V. It is housed in a compact SOT-23-5 package and is designed for efficient power management in portable applications.

Feature Summary

• Integrates a synchronous rectification architecture for enhanced conversion efficiency
• Features a built-in soft-start function to limit inrush current during startup
• Includes comprehensive protection mechanisms against over-current and thermal overload

Applications

• Portable electronic devices requiring efficient battery-powered operation
• Embedded systems utilizing microcontrollers and memory modules
• Industrial control equipment with strict power consumption constraints

Procurement Notes

Verify the specific suffix codes on the component marking to ensure compatibility with your design requirements. Confirm that the manufacturing source matches the authorized distributor list to avoid counterfeit components. Check the latest datasheet revision history for any updates to electrical characteristics or pin configurations before finalizing the bill of materials.

Selection Notes

Select this component when a fixed 3.2 V output is required from a 2.5 V to 16 V input rail. Ensure the external inductor and capacitor values are calculated according to the 300 kHz switching frequency specifications. Verify that the thermal performance of the SOT-23-5 package meets the system's heat dissipation needs under maximum load conditions.

Part Context

This part belongs to the S-8520 series of DC-DC converters, which are designed for high-efficiency power conversion in space-constrained environments. The series offers various fixed output voltages to accommodate different logic levels and sensor requirements within a single product family.

Replacement Considerations

Direct substitutes include other S-8520 series variants with compatible input ranges and similar package footprints. Verify pin-to-pin compatibility and electrical parameter alignment before swapping components in existing designs.