S-8520B30MC-ARPT2G

Overview

The S-8520B30MC-ARPT2G is a CMOS step-down switching regulator controller from the ABLIC S-8520 series. It utilizes Pulse Width Modulation (PWM) control to vary the duty ratio linearly from 0% up to 100%, ensuring low ripple and high efficiency. The device operates with an input voltage range of 2.5 V to 10 V, featuring a nominal input voltage of 2.64 V. It supports a maximum switching frequency of 375 kHz and delivers a peak current capability of 0.05 A. Packaged in a compact SOT-23-5 format, it includes internal reference voltage sources, oscillation circuits, error amplifiers, and soft-start functionality to prevent startup overshoot.

Feature Summary

• Linear PWM control circuit for duty ratios ranging from 0% to 100%
• Integrated soft-start circuit to prevent output overshoot during startup
• CMOS technology enabling low power consumption and high efficiency

Applications

• Step-down switching regulator designs requiring precise voltage regulation
• Battery-powered portable electronics needing high efficiency at light loads
• Embedded systems utilizing external Pch power MOS FETs or PNPs

Procurement Notes

Verify the specific suffix ARPT2G against official ABLIC documentation to confirm tape-and-reel packaging and temperature grade. Ensure the component matches the S-8520 series specifications for PWM control and input voltage ranges. Cross-reference the manufacturer part number with authorized distributors to confirm authenticity and compliance with RoHS standards before finalizing procurement orders.

Selection Notes

Select this controller when designing non-synchronous buck converters using external P-channel MOSFETs or PNP transistors. It is suitable for applications requiring linear duty cycle adjustment and robust transient response. Consider the S-8521 series if automatic transition between PWM and PFM modes is required for ultra-low standby currents under varying load conditions.

Part Context

This component belongs to the S-8520/8521 Series of CMOS step-down switching regulator controllers. The S-8520 series specifically focuses on PWM control for consistent performance across load ranges, distinguishing it from the S-8521 series which offers dual-mode PWM/PFM operation. These devices are designed to provide stable power management solutions by integrating essential control loops within a small footprint.

Replacement Considerations

S-8520B30MC-BJH-T2G