AL5802LPL

OBSOLETE – PART DISCONTINUED PART OBSOLETE - USE CONTACT US AL5802LPL LED DRIVER, 30V, LINEAR, ADJUSTABLE, CURRENT SINK Description The AL5802LPL combines a high-gain NPN transistor with a prebiased NPN transistor to make a simple, small footprint LED driver. Pin Assignments The LED current is set by an external resistor connected from the REXT Pin (4) to the GND Pin (6), and the internal high gain transistor develops approximately 0.6V across the external resistor. The AL5802LPL’s open-collector output can operate from 0.8V to 30V making it suitable for industry standard 5V to 24V power supplies without additional components. PWM dimming of the LED current can be achieved by either driving the BIAS Pin (1) with a low impedance voltage source, or driving the EN Pin (5) with an external open-collector NPN transistor or open-drain N-Channel MOSFET. The AL5802LPL is available in a U-DFN3030-6 (Type B) package and is ideal for driving 10mA to 120mA LED currents. 1 2 3 7 Internal Schematic (Top View) 6 5 4 (Bottom View) Package: U-DFN3030-6 (Type B)  The Collector of Q2 is Connected to Pin 2 and Pad 7 which is on the Underside of the Package  Pin 3 is Not Connected to Anything Features  Reference Voltage VREXT = 0.65V  -40 to +125°C Operating Temperature Range  0.8V to 30V Open-Collector Output  Negative Temperature Coefficient – Automatically Reduces the LED Current at High Temperatures  Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)  Halogen and ...