S-8521A31MC-AXQT2G

Overview

The S-8521A31MC-AXQT2G is a synchronous rectification switching regulator IC manufactured by ABLIC Inc. It operates within an input voltage range of 2.5V to 10V and delivers a fixed output voltage of 3.1V. The device supports a maximum output current of 1.0A and functions with a switching frequency of 60kHz. It is housed in a compact SOT-23-5 package and is rated for operation across a temperature range of -40°C to +85°C.

Feature Summary

• Integrates synchronous rectification technology to enhance power conversion efficiency.
• Features a high-density, miniature surface-mount package design.
• Includes built-in enable control functionality for system power management.

Applications

• Portable electronic devices requiring efficient step-down power regulation
• Battery-powered consumer electronics systems
• Embedded industrial equipment power supplies

Procurement Notes

Verify the specific suffix AXQT2G against official manufacturer documentation to confirm exact packaging and tape-and-reel specifications. Ensure compatibility with existing PCB footprints and thermal requirements before finalizing procurement orders.

Selection Notes

Select this component when a compact footprint and high efficiency are required for low-voltage applications. The integrated synchronous rectifier reduces external component count compared to non-synchronous alternatives. Verify that the 1.0A output capability meets the load requirements of the target circuit design.

Part Context

This part belongs to the S-8521 series of DC-DC switching regulators from ABLIC Inc. The series is characterized by its small package size and high output current capabilities, designed to meet the space constraints of modern portable electronics while maintaining stable voltage regulation under varying load conditions.

Replacement Considerations

Consult official substitution guides for verified equivalents. Cross-reference pinouts and electrical parameters carefully to ensure functional compatibility without redesigning the host circuit board.

FAQ

Does the S-8521A31MC-AXQT2G use internal or external switching transistors?

It utilizes an internal synchronous rectification structure, eliminating the need for external Schottky diodes typically found in non-synchronous designs.

What is the maximum input voltage supported by this regulator?

The device supports a maximum input voltage of 10V, making it suitable for single-cell lithium-ion battery applications.