AL1666S-13

Overview

The AL1666S-13 is an LED lighting driver IC designed for offline AC/DC applications. It supports Boost, Buck, and Flyback topologies within a single channel configuration. The device operates with an input voltage range of 85 VAC to 305 VAC and features a switching frequency of 150 kHz. Internal power supply requirements are met between 8.5 V and 29.5 V, with a maximum quiescent current of 4 mA. It includes PWM dimming capabilities and functions reliably across a temperature range of -40°C to +105°C in an SOIC-8 package.

Feature Summary

• Supports multiple converter topologies including Boost, Buck, and Flyback for versatile LED driver designs.
• Enables precise light control through integrated PWM dimming functionality.
• Optimized for high efficiency in offline AC/DC LED illumination systems.

Applications

• Offline LED lighting drivers
• General LED illumination systems

Procurement Notes

Verify the specific datasheet revision and RoHS compliance status directly with Diodes Incorporated or authorized distributors before finalizing procurement. Confirm that the SOIC-8 package dimensions align with your PCB footprint requirements. Ensure that the operating conditions, particularly the wide input voltage range and thermal limits, match your target application environment to guarantee long-term reliability and performance consistency.

Selection Notes

Select this component when designing non-isolated or isolated LED drivers requiring flexible topology options such as Boost, Buck, or Flyback. It is suitable for applications demanding high power factor and low total harmonic distortion. Consider its 150 kHz switching frequency for balancing component size and efficiency. Verify compatibility with external MOSFETs if higher output powers are required beyond the internal controller's direct drive capabilities.

Part Context

The AL1666S-13 belongs to the AL1666 series of LED drivers from Diodes Incorporated. This series focuses on providing efficient solutions for AC/DC LED lighting applications. The 'S' suffix typically denotes the SOIC-8 surface mount package variant. The '-13' suffix indicates the standard tape and reel packaging format used for automated assembly processes in manufacturing environments.

Replacement Considerations

Consult official Diodes Incorporated documentation for verified substitute part numbers. Cross-reference pinouts and electrical specifications carefully when considering alternatives from other manufacturers to ensure functional compatibility in existing LED driver designs.