AL5801

Document number: DS35555 Rev. 3 - 2

1 of 11

www.diodes.com

July 2012

© Diodes Incorporated

AL5801

100V, ADJUSTABLE CURRENT SINK LINEAR LED DRIVER

Description

The AL5801 combines a 100V N-channel MOSFET with a pre-

biased NPN transistor to make a simple, small footprint LED driver.

pin (4) to GND pin (6). The internal pre-biased transistor develops

approximately 0.56V across the external resistor.

The AL5801 open-drain output can operate from 1.1V to 100V

enabling it to operate 5V to 100V power supplies without additional

components.

PWM dimming of the LED current can be achieved by driving the

BIAS pin (1) with an external, open-collector NPN transistor or

open-drain N-channel MOSFET.

The AL5801 is available in a SOT26 package and is ideal for driving

LED currents up to 350mA.

Features

•

•

-40°C to +125°C Temperature Range

•

1.1V to 100V Open-Drain Output

•

the LED current at high temperatures

•

Low thermal impedance SOT26 package with copper lead

frame

•

Lead-Free Finish; RoHS Compliant (Notes 1 & 2)

•

Halogen and Antimony Free. “Green” Device (Note 3)

•

Qualified to AEC-Q101 Standards for High Reliability

Pin Assignments

(Top View)

SOT26

Applications

•

Linear LED Drivers

•

LED Signs

•

Offline LED Luminaries

Notes:

1. EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant. All applicable RoHS exemptions applied.

2. See http://www.diodes.com for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green" and Lead-free.

 

3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl)

and <1000ppm antimony compounds.

Typical Applications Circuit