S-8521B31MC-ATQT2G

DC DC Switching Controllers Overview

The S-8521B31MC-ATQT2G is a synchronous rectification step-down DC/DC converter IC manufactured by ABLIC Inc. It operates within an input voltage range of 2.5V to 10V and provides a fixed output voltage of 3.1V. The device supports a maximum switching frequency of 60kHz and features a duty cycle capability up to 100%. Designed for surface-mount installation, it utilizes the SC-74A (SOT-753) package configuration. The component functions as a positive output regulator with one output channel and includes enable control characteristics. It is rated for operation across a temperature range of -40°C to +85°C.

DC DC Switching Controllers Feature Summary

• Integrates synchronous rectification technology for improved power conversion efficiency
• Supports 100% duty cycle operation to maintain regulation at low input-to-output voltage differentials
• Features integrated enable control functionality for system power management

DC DC Switching Controllers Applications

• Battery-powered portable electronic devices requiring efficient voltage regulation
• Embedded systems utilizing microcontrollers or logic circuits needing stable 3.1V supply
• Industrial equipment operating within standard commercial temperature ranges

DC DC Switching Controllers Procurement Notes

Verify the specific suffix ATQT2G against official ABLIC documentation to confirm packaging and tape-and-reel specifications. Confirm current lifecycle status, as similar S-8521 variants may carry end-of-life designations. Ensure compatibility with required PCB footprint dimensions for the SC-74A package before finalizing procurement orders.

DC DC Switching Controllers Selection Notes

Select this component when a fixed 3.1V output is required from a 2.5V to 10V input source. The synchronous design offers higher efficiency compared to non-synchronous alternatives. Verify that the 60kHz switching frequency aligns with electromagnetic interference constraints and inductor selection requirements for the target application circuit.

DC DC Switching Controllers Part Context

This part belongs to the S-8521 series of synchronous buck regulators from ABLIC. The series is characterized by compact packaging and integration suitable for space-constrained designs. The S-8521 family typically targets applications requiring reliable DC-DC conversion with minimal external component count.

DC DC Switching Controllers Replacement Considerations

Consult official ABLIC substitution guides for direct equivalents. Cross-reference pinouts and electrical parameters carefully if considering third-party synchronous buck controllers.