S-8520B25MC-ARKT2U

Overview

The S-8520B25MC-ARKT2U is a step-down switching controller manufactured by ABLIC Inc. It operates within a supply voltage range of 2.5V to 16V and features a fixed switching frequency of 180kHz. The device provides a fixed output voltage of 2.5V and supports up to 100% duty cycle operation. Designed for surface-mount installation, it utilizes an SC-74A (SOT-753) package with five pins. The component functions as a positive output DC-DC converter suitable for applications requiring efficient power management in compact form factors.

Feature Summary

• Integrates a synchronous rectification architecture to enhance conversion efficiency
• Supports 100% duty cycle operation for minimal voltage drop at low input-output differentials
• Includes built-in enable control functionality for system power management

Applications

• Portable electronic devices requiring efficient battery-powered operation
• Embedded systems utilizing single-cell lithium-ion or lithium-polymer batteries
• Industrial equipment with 16V maximum input constraints

Procurement Notes

Verify the specific suffix codes against official documentation to confirm pinout compatibility and thermal characteristics. Confirm RoHS compliance status through current manufacturer declarations. Ensure the selected package variant matches the PCB footprint requirements. Cross-reference the manufacturing date code to verify component freshness and storage conditions prior to assembly.

Selection Notes

Select this component when a fixed 2.5V output is required from inputs ranging between 2.5V and 16V. The 180kHz switching frequency balances component size and efficiency. Verify that the load current requirements do not exceed the external MOSFET capabilities. Consider the SOT-753 package dimensions for space-constrained designs compared to larger regulator packages.

Part Context

This part belongs to the S-8520 series of step-down switching controllers from ABLIC. The series is designed for general-purpose power management in portable electronics. The B25 designation indicates a fixed 2.5V output configuration. The ARKT suffix defines the specific tape and reel packaging format for automated assembly processes.

Replacement Considerations

Direct substitutes include other S-8520 series variants with compatible output voltages and package types. Verify electrical parameters such as switching frequency and input voltage range before substitution. Check for equivalent thermal performance and pinout compatibility to ensure seamless integration into existing circuit designs.