S-8521C25MC-BTKT2U

Overview

The S-8521C25MC-BTKT2U is a step-down DC-DC controller IC manufactured by ABLIC Inc. It operates in a fixed 2.5V output configuration and utilizes PWM/PFM switching modes at a frequency of 300kHz. The device features a low quiescent current of 100uA and supports input voltages up to 10V. Packaged in an SOT-23-5 format, it is designed for efficient power management in portable applications requiring stable voltage regulation.

Feature Summary

• Integrates PWM and PFM control modes for optimized efficiency across varying load conditions
• Features low standby current consumption to extend battery life in portable devices
• Provides fixed 2.5V output voltage with high accuracy regulation

Applications

• Portable electronic devices requiring stable 2.5V logic supplies
• Battery-powered systems needing low quiescent current operation
• Embedded controllers utilizing step-down voltage conversion

Procurement Notes

Verify component authenticity through authorized ABLIC distributors or certified partners. Confirm RoHS compliance status and lead-free specifications against the latest datasheet revision. Ensure storage conditions meet manufacturer guidelines to prevent moisture sensitivity damage prior to assembly. Check for obsolescence notices as supply chain statuses may change.

Selection Notes

Select this component when a fixed 2.5V output is required without external feedback resistors. Consider the SOT-23-5 package size for space-constrained PCB layouts. Evaluate the 300kHz switching frequency against EMI requirements and inductor selection constraints. Compare quiescent current specifications against alternative regulators if ultra-low power standby is critical.

Part Context

This part belongs to the S-8520/S-8521 series of switching controllers from ABLIC. These components are designed for general-purpose power management in consumer electronics. The series emphasizes compact packaging and energy efficiency, targeting applications where board space and battery longevity are primary design constraints.

Replacement Considerations

Direct substitutes include other ABLIC buck controllers with identical 2.5V output and SOT-23-5 packages. Verify pin compatibility and thermal characteristics before substitution. Cross-reference electrical parameters such as switching frequency and input voltage range to ensure circuit stability.