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. If the dimming function is not used, the dimming leads should be floated.

2. Io is actual output current and Ir is rated current without dimming control.

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

threshold (approx. 50% of the max. output voltage for any given model).

4. If the output voltage is maintained above 50% of the maximum output voltage, the dimming control may

be operated over the entire 1-10V range with output current varying from 100% down to practically 10%.

5. The dimming signal is allowed to be less than 1V, however, when it for 0-1V, the output current can

maintain about 10%Ir. When it for 8.5-10V, the output current can maintain about 100%Ir.

6. Do not connect the GND of dimming to the output; otherwise, the LED driver cannot work normally.

Parameters

Minimum

Typical

Maximum

Notes

Vcc

11.8 V

12 V

12.2 V

For 4900mA

14.7 V

15 V

15.3 V

For Other models

10V output source current

0 mA

—

10 mA

Absolute maximum voltage on the 0-10V input pin

-2 V

—

12 V

Source current on 0-10V input pin

0 mA

—

0.5 mA

Value of Rin ( the resistor inside the LED driver which

locate between the 1-10V input and 10V output pin)

19.8 K

20 K

20.2 K

Output Current / Dimming Voltage

0%

20%

40%

60%

80%

100%

02468

10

Vdim (V)

Output Current / Rx

0%

20%

40%

60%

80%

100%

0

10

20

30

40

50

Rx (kΩ)

Output Current / Rx

0%

20%

40%

60%

80%

100%

0

6

12

18

24

30

Rx (kΩ)

Option 1 - DC Input

Rin

Rx

Vcc

1-10V Input (Purple)

Dim (Green)

1-10Vdc V

Option 2 - External Resistor

(Vcc=12V)

TRC-120SxxxxDT

TRC-120SxxxxDT

Rin

Vcc

1-10V Input (Purple)

10V Output (Yellow)

Dim (Green)

10V Output (Yellow)

Rin

Rx

Vcc

1-10V Input (Purple)

Dim (Green)

Option 3 - External Resistor

(Vcc=15V)

TRC-120SxxxxDT

10V Output (Yellow)

TRC-120 Series