S-8521B53MC-AUMT2U

Overview

The S-8521B53MC-AUMT2U is a step-down switching regulator controller manufactured by ABLIC Inc. It operates within a supply voltage range of 2.5V to 16V and features a fixed switching frequency of 60kHz. The device supports up to 100% duty cycle operation and includes an enable control feature for power management. Designed for surface-mount applications, it utilizes the SOT-23-5 package (SC-74A/SOT-753) and functions as a positive output DC-DC converter. The component is rated for an ambient operating temperature range from -40°C to +85°C.

Feature Summary

• Step-down topology with fixed 60kHz switching frequency
• Wide input voltage capability up to 16V
• Integrated enable pin for system power control

Applications

• Battery-powered portable electronics
• Industrial equipment power distribution
• General-purpose DC-DC conversion stages

Procurement Notes

Verify the specific suffix 'AUMT2U' against official ABLIC documentation to confirm tape-and-reel packaging and marking codes. Confirm RoHS compliance status via the manufacturer's current environmental declaration. Ensure the selected distributor provides valid traceability data for this PMIC series.

Selection Notes

Select this controller when a compact solution for stepping down voltages between 2.5V and 16V is required. The SOT-23-5 package suits space-constrained designs. Verify that external inductor and capacitor selections align with the 60kHz frequency and desired output specifications for stable regulation.

Part Context

This component belongs to the S-8521 series of switching regulators from ABLIC. The series focuses on efficient power management in small form factors. It serves as a core control element for creating regulated lower voltage rails from higher input sources in various electronic systems.

Replacement Considerations

Check the S-8521D27MC-BXMT2U datasheet for functional compatibility regarding voltage ranges and package types. Verify pinout alignment before substitution.