A6275EA-T

Overview

The Allegro MicroSystems A6275EA-T is a linear LED driver IC featuring an internal shift register topology with eight independent output channels. It operates within a supply voltage range of 4.5V to 5.5V, delivering a constant output current of 75.5mA per channel. The device supports a maximum switching frequency of 20MHz and functions reliably across an ambient temperature range of -20°C to 85°C. Packaged in a 16-pin DIP format, it integrates internal switches for direct LED control.

Feature Summary

• Eight-channel linear drive capability with integrated shift register interface
• Internal power switches eliminate the need for external components
• Constant current regulation ensures stable LED brightness performance

Applications

• General illumination lighting systems
• Indicator lamp arrays
• Display backlighting modules

Procurement Notes

Verify component authenticity through authorized distributors or manufacturer channels. Confirm package integrity and pin alignment upon receipt. Check datasheet revisions for any updates regarding electrical characteristics or thermal requirements. Ensure storage conditions comply with moisture sensitivity levels to prevent damage before soldering.

Selection Notes

Select this component when designing circuits requiring multiple independently controlled LED outputs from a single controller. The linear topology suits applications where efficiency is secondary to simplicity and low noise. Verify that the system supply voltage remains within the specified 4.5V to 5.5V window to ensure proper operation and avoid overvoltage stress on the internal circuitry.

Part Context

This part belongs to the A6275 family of linear LED drivers produced by Allegro MicroSystems. The family provides scalable solutions for multi-channel lighting applications. Variants within the series differ primarily in packaging options and specific current ratings, allowing designers to choose form factors suitable for various board space constraints while maintaining consistent functional behavior.

Replacement Considerations

Direct substitutes include other A6275 variants such as A6275SLW-T or A6275SA, provided the package type matches the design requirements. Cross-referencing pinouts and electrical specifications is essential to ensure compatibility with existing PCB layouts and thermal management strategies.