S-8521B30MC-ATPT2U

Overview

The S-8521B30MC-ATPT2U is a step-down DC-DC switching controller manufactured by ABLIC Inc. It operates within the S-8521 series and utilizes a Buck topology for positive output configuration. The device is housed in an SOT-23-5 package, specifically SC-74A or SOT-753 variants, with a unit weight of approximately 30 mg. It functions as a transistor driver for external power switches. The component is classified under PMIC - Power Management ICs and Switching Controllers. Factory packaging quantity is listed as 3000 units per reel.

Feature Summary

• Integrated step-down (buck) switching controller architecture
• Positive output configuration with transistor driver capability
• Compact surface-mount SOT-23-5 package design

Applications

• Battery-powered portable electronic devices requiring efficient voltage regulation
• Embedded systems utilizing buck converter topologies for power management
• General-purpose DC-DC conversion circuits in consumer electronics

Procurement Notes

Verify the specific ordering suffix to ensure correct package type and tape/reel specifications. Confirm RoHS compliance status through official documentation before integration. Check current product lifecycle status as availability may vary. Ensure compatibility with external components selected for the buck converter circuit design.

Selection Notes

Select this controller when a fixed step-down voltage regulation solution is required in a small form factor. Consider the SOT-23-5 package constraints for PCB layout. Verify that the external MOSFET and passive components match the controller's drive requirements. Compare against other S-8521 series variants if different output configurations are needed.

Part Context

This component belongs to the ABLIC S-8521 series of power management integrated circuits. It is designed for applications requiring efficient DC-DC conversion in compact spaces. The series typically targets battery-operated devices where space and efficiency are critical. It serves as a core control element in modern portable electronics power stages.

Replacement Considerations

Direct substitutes include the S-8521B30MC-ATPT2G variant from the same manufacturer family. Cross-reference pinouts and electrical characteristics carefully when considering alternative manufacturers. Ensure the replacement supports the same SOT-23-5 footprint and buck topology requirements.