S-8520F28MC-BNNT2U

Overview

The S-8520F28MC-BNNT2U is a step-down switching controller manufactured by ABLIC Inc. It operates with a fixed switching frequency of 300 kHz and features an input voltage range of 2.5 V to 16 V. The device provides a fixed output voltage of 2.8 V and maintains a typical quiescent current of 100 uA. It is housed in a compact SOT-23-5 package and supports operation temperatures from -40°C to +85°C.

Feature Summary

• Integrates a synchronous rectification architecture for efficient power conversion
• Features low quiescent current consumption for extended battery life
• Includes built-in protection mechanisms against overcurrent and thermal overload

Applications

• Portable consumer electronics requiring efficient power management
• Battery-powered IoT sensor nodes
• Industrial control systems with limited space constraints

Procurement Notes

Verify the specific suffix BNNT2U against the official ABLIC datasheet to confirm pinout and marking codes. Confirm RoHS compliance status through the manufacturer's environmental declaration. Check for end-of-life notices or alternative recommendations directly from ABLIC before finalizing procurement plans.

Selection Notes

Select this component when a fixed 2.8 V output is required from a 2.5 V to 16 V input source. Ensure the application demands a 300 kHz switching frequency to balance component size and efficiency. Verify that the SOT-23-5 package fits the PCB layout constraints and that the thermal performance meets the operating environment requirements.

Part Context

This part belongs to the S-8520 series of DC-DC converters, designed for high-efficiency step-down applications. The series utilizes CMOS technology to achieve low power consumption while maintaining stable regulation. It serves as a core power management solution for modern electronic devices prioritizing energy efficiency and compact form factors.

Replacement Considerations

Consult the official ABLIC replacement guide for direct equivalents. Verify compatibility with existing PCB footprints and control logic levels before substitution.