A6280EA-T

Overview

The Allegro MicroSystems A6280EA-T is a linear LED driver IC designed for automotive and industrial applications. It operates within a supply voltage range of 5 V to 17 V. The device provides three independent constant current outputs, with an adjustable output current range of 10 mA to 150 mA per channel. It supports PWM dimming control and features 3x7-bit dot correction settings for precise brightness uniformity. The component is housed in a 16-pin DIP package and is rated for operation across a temperature range suitable for general electronic environments.

Feature Summary

• Provides three independent constant current channels for high-brightness LED arrays
• Integrates 3x7-bit dot correction capability for enhanced luminance uniformity
• Supports pulse-width modulation (PWM) input for dynamic brightness adjustment
• Features linear topology with internal switching elements for simplified circuit design

Applications

• Automotive interior lighting systems
• Industrial high-brightness LED illumination
• Consumer electronics backlighting applications

Procurement Notes

Verify the specific ordering suffix and package variant when sourcing, as availability may vary by distributor. Confirm that the 16-DIP form factor aligns with existing PCB footprints. Check for lifecycle status updates, as this part may be subject to obsolescence notices. Ensure compatibility with system voltage ranges between 5 V and 17 V before integration. Review thermal management requirements given the linear regulation architecture.

Selection Notes

Select this component when multi-channel constant current drive is required without complex external regulation. The integrated dot correction reduces the need for external calibration components. Consider the linear topology limitations regarding efficiency at higher voltage differentials. Verify that the 150 mA maximum per channel meets load requirements. Evaluate the 16-pin DIP package constraints against board space limitations.

Part Context

The A6280EA-T belongs to Allegro's dedicated LED driver family, focusing on precision current regulation for display and lighting markets. It complements other Allegro solutions by offering multi-channel control with built-in correction features. This series targets applications requiring consistent color and brightness across multiple LEDs.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Consult manufacturer resources for direct replacements or pin-compatible alternatives.