S-8521C28MC-BTNT2U

Overview

The S-8521C28MC-BTNT2U is a positive output step-down DC-DC controller IC manufactured by ABLIC Inc. It operates within the S-8521 series and utilizes a SOT-23-5 surface-mount package for compact integration. The device functions as a buck regulator, designed to efficiently manage power conversion in portable electronics. Key electrical characteristics include a fixed output voltage configuration of 2.8 V and an input voltage range extending up to 10 V. The component supports a maximum output current of 300 mA, ensuring adequate power delivery for various load requirements. It maintains operation across a wide temperature range from -40°C to +85°C, suitable for diverse environmental conditions.

Feature Summary

• Integrates a synchronous buck switching regulator controller optimized for high efficiency and low noise performance.
• Features a compact SOT-23-5 surface-mount package designed for space-constrained printed circuit board layouts.
• Supports external MOSFET control for flexible design implementation with customizable passive components.

Applications

• Portable consumer electronics requiring efficient step-down power regulation
• Battery-powered devices needing stable 2.8V supply rails
• Embedded systems utilizing synchronous buck topology

Procurement Notes

Verify the specific suffix codes against official ABLIC documentation to confirm pinout compatibility and thermal specifications. Ensure that external component selections align with the datasheet recommendations for stability and transient response. Confirm RoHS compliance status through the manufacturer's latest certification records before finalizing procurement orders.

Selection Notes

Select this controller when a fixed 2.8V output is required with a maximum load current of 300 mA. The SOT-23-5 package is ideal for applications with strict spatial limitations. Consider the input voltage range up to 10 V when designing power stages for battery-operated systems or regulated bus architectures.

Part Context

This component belongs to the S-8521 series of switching regulators from ABLIC Inc., focusing on power management integrated circuits. The series targets applications demanding high efficiency and small form factors. As a buck regulator controller, it complements other PMIC offerings by providing dedicated step-down conversion capabilities for modern electronic designs.

Replacement Considerations

Consult official cross-reference lists for direct substitutes. Verify pin compatibility and electrical parameters before replacing with alternative buck controllers from different manufacturers.