A6276ELW-T

Overview

The Allegro MicroSystems A6276ELW-T is a linear LED driver IC featuring 16 outputs with a shift register topology. It operates on a supply voltage range of 4.5V to 5.5V, delivering an output voltage of 4V and a channel current of 75.5mA. The device supports a frequency of 20MHz and functions within a temperature range of -40°C to 85°C. Packaged in a 24-SOIC surface-mount format, it includes internal switches for direct LED control.

Feature Summary

• Integrates a shift register topology for serial data input and parallel LED output distribution across 16 channels.
• Features linear regulation type with internal switches for precise current control without external components.
• Includes dimming capability for adjustable brightness management in lighting applications.

Applications

• LED display segment drivers
• Common-anode LED matrix systems
• Industrial indicator lighting

Procurement Notes

Verify component status as the A6276ELW-T is marked as obsolete or not recommended for new designs. Confirm RoHS compliance variations between tape and reel packaging options. Ensure compatibility with existing 24-SOIC footprints during replacement planning. Check for specific ordering suffixes that may affect environmental certifications or package dimensions before finalizing procurement orders.

Selection Notes

Select this component for low-voltage applications requiring up to 16 independently controlled LED channels. The 5.5V maximum supply limits use cases to lower voltage systems compared to automotive-grade alternatives. Consider the linear topology thermal dissipation requirements when designing PCB layouts for high-density LED arrays.

Part Context

This part belongs to the Allegro A6276 family of linear LED drivers. It is distinct from the A6260 series which supports higher voltages up to 40V and different current ratings. The A6276 is specifically designed for common-anode configurations with shift register interfaces, differing from PWM-controlled constant current sources found in other Allegro product lines.

Replacement Considerations

• A6276ELP

FAQ

What is the maximum supply voltage for the A6276ELW-T?

The maximum supply voltage is 5.5V.

Does the A6276ELW-T support PWM dimming?

Yes, the device includes dimming functionality, though it utilizes a linear driver topology rather than switching regulators.