AL5809 Simple Two-Terminal +/-5% Constant-Current Linear Regulator

The Diodes Incorporated AL5809 is a constant-current linear LED driver and provides a cost-effective two pin solution. It has an excellent temperature stability of 20 ppm/°C and current accuracy of ±5% regulated over a wide voltage and temperature range. The AL5809 comes in various fixed-output current versions, removing the need for external current-setting resistors, creating a simple solution for linear driving LEDs. It supports both the high-side and low-side driving of LED chains.

The AL5809 turns on immediately and can swing from 2.5 V up to 60 V enabling drive long LED chains. The floating ground, 60 V voltage rating between input and output pins is designed to withstand the high peak voltage incurred in offline applications.

The AL5809 is available in thermally robust package PowerDI-123 or SOD-123 package.