AL5809-40P1-7

Overview

The AL5809-40P1-7 is a linear LED driver IC from Diodes Incorporated, designed for high-voltage constant current applications. It operates with an input voltage range of 2.5 V to 60 V and delivers a fixed output current of 40 mA. The device supports PWM dimming functionality and functions within a temperature range of -40°C to +125°C. Packaged in a compact PowerDI-123-2 surface-mount format, it offers a maximum power dissipation of 1.2 W and operates at frequencies between 100 Hz and 200 Hz.

Feature Summary

• Two-terminal linear topology simplifies circuit design by eliminating external components typically required for regulation.
• Integrated PWM dimming capability allows for precise brightness control without affecting current stability.
• High voltage tolerance enables direct connection to higher voltage LED strings without additional step-down stages.

Applications

• General LED lighting fixtures requiring constant current drive
• Backlighting systems for displays and indicators
• Low-power LED arrays in automotive or industrial environments

Procurement Notes

Verify the specific suffix P1 against the manufacturer's latest datasheet to confirm package type and tape/reel specifications. Ensure compatibility with the target PCB footprint for the PowerDI-123-2 package. Confirm that the 40 mA output current aligns with the LED string requirements to prevent overdriving. Check for RoHS compliance documentation if required by regional regulations.

Selection Notes

Select this component when a simple, cost-effective solution for driving single-channel LEDs is needed. It is suitable for applications where space constraints favor the small PowerDI-123-2 package. Consider the 1.2 W power dissipation limit when designing thermal management solutions. Compare with other AL5809 variants if different current levels such as 15 mA or 100 mA are required.

Part Context

This part belongs to the AL580 series of two-terminal LED drivers from Diodes Incorporated. These devices are engineered for high efficiency and minimal external component counts. The series includes various current options to accommodate different LED configurations while maintaining consistent performance characteristics across the family.

Replacement Considerations

Check for AL5809-15P1-7 for lower current needs or AL5809-100P1-7 for higher current requirements. Verify pinout and package dimensions match before substitution. Consult official cross-reference lists for guaranteed functional equivalents.