Thomas Research Products • 1225 Bowes Rd • Elgin, IL 60123 • T 847-515-3057 • F 847-515-3047 • www.trpssl.com

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Dimming Control Details

Notes:

1. For the driver to operate properly, the load voltage must be maintained above the minimum voltage threshold

(approx. 33% of the max. output voltage for any given model).

2. If the dimming voltage is varied from 10V down to 0V, the output current can be varied from 100%Io down to 10-20%Io.

3. Do not connect the GND of dimming to the output; otherwise the LED driver can not work normally.

Parameters

Minimum

Typical

Maximum

10V output voltage

9.8 V

10 V

10.2 V

10V output source current

-10 mA

—

2 mA

Absolute maximum voltage on the 0-10V input pin

-2 V

—

15 V

Source current on 0-10V input pin

0 mA

—

1 mA

The dimmer control is operated from either a potentiometer or from an input signal of 1 – 10 Vdc.

Recommended implementations are provided below.

Option 1 - Potentiometer Control

20K

Rin

1-10V Input (Purple)

GND (Green)

10V Output (Yellow)

1-10V Input (Purple)

GND (Green)

1-10Vdc V

Option 2 - DC Input

TRC-050xxxxDT

TRC-050xxxxDT

Output Current / Potentiometer

0%

20%

40%

60%

80%

100%

0

1

2

3

4

5

6

7

9

8

10

Output Current / Dimming Voltage

0%

20%

40%

60%

80%

100%

0

1

2

3

4

5

6

7

9

8

10

TRC-050 Dimming Series