Issue 1 – October 2011
www.diodes.com
© Diodes Incorporated, 2011
AL5802EV1 USER GUIDE
Description
The board is intended for the evaluation of
AL5802, an adjustable current sink linear
LED driver in the SOT26 package. The
device is ideal for driving 20mA to 120mA
LED.
When an input voltage higher than the
forward voltage of the LED string is applied
to the board, the board supplies a fixed
current to the LED string connected to its
output. The board can operate from 5V to
24V DC power supplies. The maximum input
voltage is up to 30V.
The board has been designed for driving low
current LEDs with typical current of 20mA,
50mA or 100mA. Jumpers 1, 2 and 3 on the
evaluation board set the value of the LED
current.
The board also provides an ENABLE input
which can be used for PWM dimming of the
LED string. The LED current will shut down
when the ENABLE input is pulled down to
ground either with an external open-collector
NPN transistor, or open-drain N-channel
MOSFET.
Ordering Information
ORDER NUMBER
AL5802EV1
Please note evaluation boards are subject to availability and qualified leads
Figure 1. AL5802 evaluation board
DMM
PSU
20V
200mA
