S-8520B33MC-ARST2U

Overview

The S-8520B33MC-ARST2U is a positive output buck DC-DC switching controller IC manufactured by ABLIC Inc. It operates with a fixed switching frequency of 180kHz and supports a maximum duty cycle of 100%. The device requires a supply voltage (Vcc/Vdd) between 2.5V and 10V. It features an enable control characteristic and utilizes a single output stage configured for step-down conversion. The component is housed in a compact SOT-23-5 package, suitable for surface mount installation, and is rated for an operating temperature range of -40°C to +85°C.

Feature Summary

• Supports 100% duty cycle operation for efficient low-dropout performance
• Integrated enable pin for precise power management control
• Compact SOT-23-5 surface-mount packaging for space-constrained designs

Applications

• Battery-powered portable electronic devices
• Embedded systems requiring stable step-down voltage regulation
• Industrial control modules operating within extended temperature ranges

Procurement Notes

Verify the complete part number including suffixes to ensure correct output voltage and package configuration. Confirm RoHS compliance status and manufacturing origin against current datasheets. Check for recent product change notifications regarding marking or material composition updates before finalizing procurement orders.

Selection Notes

Select this controller when a fixed 180kHz switching frequency is required for EMI management. Ensure the input voltage stays within the 2.5V to 10V Vcc range. Consider the SOT-23-5 footprint constraints and thermal requirements for the specific application environment.

Part Context

This component belongs to the S-8520 series of buck regulators from ABLIC Inc. The series is designed for general-purpose power management applications requiring high efficiency and small form factors. The specific model indicates a fixed output configuration within this family.

Replacement Considerations

Direct substitutes may include other S-8520 variants with different output voltages or packages. Verify pin compatibility and electrical specifications before cross-referencing with competitors' buck controllers.