A6277ELWTR-T

Overview

The A6277ELWTR-T is a linear LED driver IC manufactured by Allegro MicroSystems. It features eight outputs with a maximum current of 120mA per channel and operates on a supply voltage ranging from 4.5V to 5.5V. The device utilizes a shift register topology for control and supports PWM dimming functionality. It is housed in a 20-SOIC package with a width of 7.50mm and functions within an ambient temperature range of -40°C to +85°C.

Feature Summary

• Eight-channel linear output capability for simultaneous LED driving
• Integrated shift register interface for serial data input
• Supports analog and pulse-width modulation dimming control

Applications

• Automotive interior lighting systems
• Industrial LED illumination arrays
• Consumer electronic display backlighting

Procurement Notes

Verify component status as the A6277ELWTR-T is listed as obsolete or not recommended for new designs. Confirm availability through authorized distributors for existing inventory. Ensure compatibility with current design requirements before procurement, considering potential lead time variations for remaining stock.

Selection Notes

Select this component for applications requiring multi-channel linear LED control with simple serial interface needs. Evaluate thermal management requirements due to linear regulation characteristics. Consider alternative newer models if long-term supply assurance is critical for production cycles.

Part Context

This part belongs to Allegro's LED driver product family designed for precise current regulation. It serves as a solution for managing multiple LEDs in compact spaces using standard SOIC packaging. The device integrates control logic directly with power drivers to simplify circuit design.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Consult Allegro MicroSystems technical support for direct replacements or updated series equivalents.