S-8521F32MC-BPRT2U

Overview

The S-8521F32MC-BPRT2U is a CMOS step-down switching regulator controller from the ABLIC S-8521 series, designed for efficient power management in compact electronic systems. It operates with an input voltage range of 2.5V to 10V and delivers a fixed output voltage of 3.2V. The device features a low quiescent current of 100µA and supports a switching frequency of 300kHz. Encased in a space-saving SOT-23-5 package, it functions within a temperature range of -40°C to +85°C, providing reliable performance for portable applications requiring stable DC-DC conversion.

Feature Summary

• Integrates PWM/PFM switching control for optimized efficiency across varying load conditions
• Features a compact SOT-23-5 surface-mount package for space-constrained designs
• Includes built-in error amplifier and oscillation circuit for stable regulation

Applications

• Portable consumer electronics requiring efficient step-down conversion
• Battery-powered devices needing low quiescent current operation
• Embedded systems utilizing external MOSFETs for power regulation

Procurement Notes

Verify the specific suffix BPRT2U against official ABLIC documentation to confirm packaging details and tape-and-reel specifications. Ensure compatibility with external components such as inductors and capacitors based on the 300kHz switching frequency. Confirm availability status as this part may be subject to lifecycle changes or minimum order requirements defined by the manufacturer.

Selection Notes

Select this component when a fixed 3.2V output is required from a 2.5V to 10V input source. It is suitable for designs prioritizing low standby current and small footprint. Consider the external MOSFET requirement inherent to controller ICs. Verify that the 300kHz frequency aligns with electromagnetic interference constraints and passive component selection for the target application.

Part Context

This part belongs to the S-8521 series of step-down switching regulator controllers manufactured by ABLIC Inc. The series utilizes CMOS technology to achieve high efficiency and low power consumption. These controllers are designed to work with external power switches, offering flexibility in designing custom DC-DC converter circuits for various industrial and consumer applications.

Replacement Considerations

Consult the S-8520/8521 datasheet for direct pin-compatible alternatives within the same family. Verify if other suffixes offer different packaging or temperature grades. Cross-reference with similar buck controllers from ABLIC ensuring matching input voltage ranges and switching frequencies.