S-8520B18MC-ARDT2U

Overview

The S-8520B18MC-ARDT2U is a step-down switching regulator controller manufactured by ABLIC Inc. It operates with a fixed switching frequency of 180kHz and supports a supply voltage range from 2.5V to 16V. The device features a maximum duty cycle of 100% and provides positive output configuration via a transistor driver stage. Designed for surface mount installation, it is housed in an SOT-23-5 package and functions within an ambient temperature range of -40°C to 85°C.

Feature Summary

• Supports 100% maximum duty cycle for low dropout operation
• Integrated enable control feature for power management
• Fixed 180kHz switching frequency for stable regulation

Applications

• Battery-powered portable electronic devices
• General-purpose DC-DC conversion systems
• Embedded power management circuits

Procurement Notes

Verify the specific suffix ARDT2U against official ABLIC documentation to confirm pinout and marking details. Confirm RoHS compliance status through current manufacturer statements. Check for any recent Product Change Notices (PCN) regarding material or design updates before finalizing procurement plans.

Selection Notes

Select this component when a buck topology with a fixed 180kHz frequency is required. Ensure the input voltage stays within the 2.5V to 16V range. Verify that the SOT-23-5 package fits the PCB layout constraints and that the operating temperature range meets environmental requirements.

Part Context

This part belongs to the S-8520 series of switching controllers from ABLIC. The series focuses on efficient power management solutions using CMOS technology. It serves as a core control element for external power switches in compact power supply designs.

Replacement Considerations

Consult official ABLIC cross-reference lists for verified substitutes. Do not assume compatibility based solely on package similarity.