S-8520D50MC-BWJT2G

Overview

The S-8520D50MC-BWJT2G is a CMOS step-down switching regulator controller manufactured by ABLIC Inc. It utilizes Pulse Width Modulation (PWM) control to achieve low-ripple power and high efficiency. The device features a fixed output voltage of 5.0V, a switching frequency of 375kHz, and an input voltage range of 2.5V to 10V. Packaged in a compact SOT-23-5 surface-mount configuration, it includes built-in error amplifiers and soft-start circuits to prevent startup overshoot.

Feature Summary

• Integrates PWM control circuitry for linear duty ratio variation from 0% to 100%
• Includes internal reference voltage source, oscillation circuit, and error amplifier
• Features soft-start circuitry to prevent output voltage overshoot during initialization

Applications

• Battery-powered portable electronic devices requiring efficient step-down conversion
• Embedded systems utilizing external P-channel MOSFETs or PNPs for power regulation
• General-purpose DC-DC converter designs needing precise voltage control

Procurement Notes

Verify the specific suffix BWJT2G against official ABLIC documentation to confirm package type and tape/reel specifications. Ensure compatibility with required external components such as inductors and capacitors for stable operation at 375kHz. Confirm RoHS compliance status through current datasheets before finalizing procurement plans.

Selection Notes

Select this component when designing non-synchronous buck converters requiring fixed 5.0V output. It is suitable for applications where external power switches are preferred over integrated solutions. Consider the 375kHz switching frequency for balancing component size and efficiency requirements within the specified 2.5V to 10V input range.

Part Context

This part belongs to the S-8520 Series, which consists of CMOS step-down switching regulator controllers using PWM control. The series is designed to provide high efficiency and excellent transient characteristics. It serves as a core control element in DC-DC converters, requiring external passive components and power switches to function effectively.

Replacement Considerations

The S-8520E22MC-BJH-T2G is a documented member of the same S-8520/8521 series family. Verify if alternative output voltages or switching frequencies meet design requirements. Cross-reference pinouts and electrical parameters with official substitution guides.