S-8521B27MC-ATMT2U

Overview

The S-8521B27MC-ATMT2U is a step-down DC/DC switching controller IC 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 a maximum duty cycle of 100% and includes an enable control feature for power management. It is housed in a compact SOT-23-5 package, suitable for surface mount applications across a temperature range of -40°C to 85°C.

Feature Summary

• Integrated step-down topology with 100% maximum duty cycle capability
• Fixed 60kHz switching frequency for stable operation
• Built-in enable pin for precise power control

Applications

• Battery-powered portable electronics
• Industrial control systems
• Automotive embedded modules

Procurement Notes

Verify the specific suffix ATMT2U against official ABLIC documentation to confirm tape-and-reel packaging and marking codes. Ensure compatibility with standard SOT-23-5 footprint designs. Confirm RoHS compliance status via current datasheets before finalizing procurement specifications.

Selection Notes

Select this component when a low-pin-count buck controller is required for space-constrained designs. The 60kHz frequency allows for smaller external passive components compared to lower-frequency alternatives. Verify that the input voltage range up to 16V meets system requirements.

Part Context

This part belongs to the S-8521 series of switching regulators from ABLIC. It shares architectural similarities with other members like the S-8521D variant but differs in specific electrical characteristics and package options. The series targets efficient power conversion in compact form factors.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.