S-8521D30MC-BXPT2G

Overview

The S-8521D30MC-BXPT2G is a step-down DC/DC switching controller manufactured by ABLIC Inc. It operates within a supply voltage range of 2.5V to 16V and features a fixed switching frequency of 60kHz. The device supports up to 100% duty cycle and includes an enable control feature. Designed for surface-mount installation, it utilizes the SC-74A (SOT-753) package. The component functions as a positive output buck regulator with a single output stage and transistor driver configuration.

Feature Summary

• Integrates a synchronous rectification-free buck topology for efficient power conversion
• Supports continuous operation with a maximum duty cycle of 100 percent
• Includes hardware enable functionality for system power management

Applications

• Portable electronic devices requiring compact power solutions
• Battery-powered equipment utilizing step-down regulation
• General-purpose DC-DC converter circuits in consumer electronics

Procurement Notes

Verify the specific suffix BXPT2G against official ABLIC documentation to confirm package type and tape-and-reel specifications. Ensure compatibility with standard SMT assembly processes for the SC-74A footprint. Cross-reference the part number with current manufacturer datasheets to validate availability status and design-in recommendations before finalizing procurement plans.

Selection Notes

Select this component when a low-cost, single-output buck controller is required for applications operating below 16V input. The 60kHz frequency allows for smaller external passive components compared to lower-frequency alternatives. Verify that the external MOSFET selection aligns with the controller's drive capabilities and the target load current requirements for the specific application design.

Part Context

This part belongs to the S-8521 series of DC/DC switching controllers from ABLIC. The series is characterized by its simplicity and cost-effectiveness for basic step-down applications. The S-8521 family typically offers robust performance in portable devices, providing a reliable solution for managing battery life through efficient voltage regulation in space-constrained environments.

Replacement Considerations

Consult official ABLIC substitution guides for verified equivalents. Generic replacements may differ in switching frequency or control logic. Validate pinout compatibility and electrical parameters against the original specification sheet before implementation.