S-8521D50MC-BYJT2G

Overview

The S-8521D50MC-BYJT2G is a positive output step-down DC-DC switching controller IC manufactured by ABLIC Inc. It utilizes a buck topology to regulate voltage with a fixed internal switching frequency of 60kHz. The device supports an input supply voltage range of 2.5V to 16V and operates within a temperature range of -40°C to +85°C. Packaged in a compact SOT-23-5 surface-mount case, it features a 100% maximum duty cycle capability and includes enable control functionality for power management applications.

Feature Summary

• Buck topology step-down DC-DC switching controller
• Fixed 60kHz internal switching frequency
• Enable pin control for power management
• Compact SOT-23-5 surface-mount package

Applications

• Portable electronic devices requiring efficient power regulation
• Battery-powered systems utilizing buck conversion
• General-purpose DC-DC power supply designs

Procurement Notes

Verify the specific suffix BYJT2G against the official ABLIC datasheet to confirm packaging type and tape-and-reel specifications. Ensure compatibility with the required input voltage range of 2.5V to 16V for your circuit design. Confirm that the SOT-23-5 package footprint matches your PCB layout constraints before finalizing procurement orders.

Selection Notes

Select this component when a low-pin-count buck controller is required for space-constrained designs. The fixed 60kHz frequency simplifies external component selection compared to adjustable frequency variants. Ensure the application does not require synchronous rectification, as this model uses a non-synchronous configuration. Verify thermal performance requirements align with the specified operating temperature range.

Part Context

This part belongs to the S-8521 series of DC-DC switching controllers from ABLIC Inc., designed for efficient power management in portable electronics. The series offers various output voltage configurations through different suffixes. The S-8521D50MC variant specifically targets applications needing a stable step-down solution with minimal external components.

Replacement Considerations

Direct substitutes include other S-8521 series models such as S-8521C27MC-BTMT2G or S-8521B29MC-ATOT2G, provided the output voltage and pinout compatibility are verified. Cross-reference the specific electrical parameters and package dimensions to ensure functional equivalence in the target application.