DIOAL5809-20S1-7
Overview
The AL5809-20S1-7 is a constant-current LED driver designed for high-voltage applications up to 60V in a compact SOD-123 package. It simplifies LED string design by integrating the power transistor and control circuitry into a single two-terminal device that requires no external components to set the current. This device delivers a fixed 20mA output with high power supply rejection and excellent temperature stability across its -40C to 125C operating range.
Why Choose This Part
The two-terminal design eliminates the need for external resistors or capacitors, significantly reducing PCB footprint and bill-of-materials cost. Its wide input voltage range from 2.5V to 60V allows it to handle large voltage fluctuations while maintaining a precise 20mA current for LED protection.
Applications
Key Specifications
Getting Started
To use this device, connect it in series with an LED string between the supply voltage and ground, ensuring the cathode of the AL5809 is toward the negative side of the circuit. No external component selection is required, but designers should perform thermal calculations based on the voltage drop across the device and the SOD-123 package power dissipation limits.
