S-8521C32MC-BTRT2G

Overview

The S-8521C32MC-BTRT2G is a synchronous rectification step-down DC/DC converter IC manufactured by ABLIC Inc. It operates with an input voltage range of 2.5V to 10V and provides a fixed output voltage of 3.2V. The device integrates high-side and low-side N-channel MOSFETs for efficient power conversion. Key electrical characteristics include a switching frequency of 60kHz, a maximum duty cycle of 100%, and a supply voltage (Vcc/Vdd) range of 2.5V to 10V. It is housed in a compact SOT-23-5 package.

Feature Summary

• Integrates synchronous rectification with internal high-side and low-side N-channel MOSFETs
• Supports 100% duty cycle operation for minimal dropout voltage
• Features a fixed 60kHz switching frequency
• Includes enable control functionality

Applications

• Portable electronic devices requiring efficient power management
• Battery-powered systems utilizing step-down conversion
• General-purpose DC/DC power supply circuits

Procurement Notes

Verify the specific suffix BTRT2G to confirm tape and reel packaging and exact output voltage configuration. Confirm RoHS compliance status and ensure the component meets REACH standards for your region. Check for obsolescence notices as this part may be subject to design restrictions or minimum order quantity limits.

Selection Notes

Select this component when a fixed 3.2V output is required from a 2.5V to 10V input source. The integrated synchronous rectifiers offer higher efficiency compared to non-synchronous alternatives. Ensure the application environment stays within the -40°C to +85°C operating temperature range and that the load current requirements are met by the internal MOSFET capabilities.

Part Context

This part belongs to the S-8521 series of positive output buck switching regulator ICs. The series is characterized by its small footprint and integration of power switches, making it suitable for space-constrained designs. It complements other ABLIC PMIC solutions for comprehensive power management in consumer and industrial electronics.

Replacement Considerations

Publicly confirmed substitute part numbers for this specific variant are not available in the provided documentation. Verify pinout compatibility and electrical specifications before considering alternative manufacturers.