AL1781T16E-13

Overview

The AL1781T16E-13 is a single-channel linear LED driver IC from Diodes Incorporated, designed for automotive applications compliant with AEC-Q100 standards. It features an internal switch and supports dimming capabilities. The device operates within a supply voltage range of 4.5 V to 28 V and delivers a programmable output current up to 1.5 A. It utilizes a TSSOP-16EP package suitable for surface-mount technology. The component includes thermal shutdown protection to ensure reliability under varying operating conditions.

Feature Summary

• Supports analog and PWM dimming control for precise brightness adjustment
• Integrated internal high-side switch eliminates external MOSFET requirements
• Automotive-grade qualification ensuring robust performance in harsh environments

Applications

• Automotive exterior lighting systems
• Interior ambient illumination circuits
• Dashboard indicator backlighting

Procurement Notes

Verify the specific revision level against the latest datasheet before procurement, as product change notifications may affect specifications or availability. Confirm that the TSSOP-16EP package variant matches your PCB footprint requirements. Ensure compliance with RoHS directives if required by your manufacturing process. Cross-reference the manufacturer's discontinuation notices to confirm long-term supply viability for production runs.

Selection Notes

Select this component when designing automotive LED drivers requiring integrated switching without external power transistors. It is suitable for applications needing both analog and digital dimming interfaces. Consider its thermal dissipation characteristics relative to the expected load current and ambient temperature. Verify input voltage compatibility with the vehicle's electrical system architecture.

Part Context

This part belongs to the AL1781 series of linear LED drivers optimized for automotive use. It shares functional similarities with other members of the family but is distinguished by its single-channel configuration and specific pinout arrangement. The series focuses on providing reliable constant current regulation for LED loads in transportation applications.

Replacement Considerations

Check for direct substitutes within the same automotive-qualified linear driver portfolio. Evaluate alternative packages if form-factor changes are permissible. Ensure any replacement maintains the required dimming interface and current regulation accuracy.