EV46885DN-00A (MP46885) 80V INPUT 0.5A HIGH POWER LED DRIVER

NOTICE:

The information in this document is subject to change without notice. Users should warrant and guarantee that third

party Intellectual Property rights are not infringed upon when integrating MPS products into any application. MPS will not

assume any legal responsibility for any said applications.

EV46885DN-00A Rev 1.0

www.MonolithicPower.com

3

12/18/2013

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© 2013 MPS. All Rights Reserved.

PRINTED CIRCUIT BOARD LAYOUT

Figure 1—Top Layer

Figure 2—Bottom Layer

QUICK START GUIDE

1. Check the LED string voltage and preset the power supplies’ Voltage for input. For example, 10

LEDs have about 32V forward voltage drop. So the power supply should be set higher than 32V,

say set it to 60V. Set a second power supply to 5V for enable signal. Setup a signal generator to

generate PWM signal with 5V amplitude, 20kHz frequency and 50% duty cycle.

2. Turn-off all power supplies.

3. Connect the LED+ to the anode of the string and LED- to the cathode of the string. Connect the

VIN to the first power supply (60V). Connect the EN to the 5V power supply. Connect the DIM to

signal generator.

4. Turn on the high voltage power supply (60V).

5. Turn on the signal generator.

6. Turn on the 5V power supply.

Note: If do not need dimming function, place a 0Ω resistor at R3, which will connect DIM to EN.