S-8521A36MC-AXVT2U

Overview

The S-8521A36MC-AXVT2U is a synchronous rectification switching regulator IC manufactured by ABLIC Inc. It utilizes a step-down (buck) topology to provide a fixed 3.6 V output voltage with high efficiency. The device operates within an input voltage range of 2.5 V to 16 V and supports a maximum output current of 1 A. Key electrical parameters include a switching frequency of 180 kHz, a duty cycle capability up to 100%, and an operating temperature range from -40°C to +85°C. The component is housed in a compact SOT-23-5 surface-mount package.

Feature Summary

• Synchronous rectification architecture for enhanced power conversion efficiency
• Integrated enable control function for precise power management
• Capable of 100% duty cycle operation for minimal dropout performance
• Designed for stable regulation in portable electronic applications

Applications

• Portable consumer electronics requiring efficient power supply
• Battery-powered devices needing extended operational life
• Embedded systems utilizing microcontrollers or sensors
• Industrial equipment with moderate power requirements

Procurement Notes

Verify the specific suffix AXVT against official ABLIC documentation to confirm tape-and-reel packaging and marking codes. Ensure compatibility with standard SOT-23-5 footprints during PCB layout. Confirm RoHS compliance status through the manufacturer's latest environmental declaration before finalizing procurement specifications.

Selection Notes

Select this component when a 1 A buck converter with synchronous rectification is required. The 180 kHz switching frequency balances size and efficiency. Verify that the load current does not exceed the rated limit and that the input voltage remains within the specified 2.5 V to 16 V range for reliable operation.

Part Context

This part belongs to the S-8521 series of synchronous rectification switching regulators. The series is characterized by its ability to deliver high output currents in small packages. It is designed to replace older non-synchronous designs where efficiency and thermal management are critical constraints in compact form factors.

Replacement Considerations

Direct substitutes may include other ABLIC S-8521 variants with different output voltages or tolerance levels. Cross-reference pinouts and thermal characteristics carefully when considering alternatives from other manufacturers to ensure functional equivalence.