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

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“-PD” Option: PWM Dimming

PWM In

Sink

PWM Positive Dimming Typical Circuit

LED20W-xxx-Cxxxx-PD

PWM (+) Purple

PWM (-) Gray

Parameters

Minimum

Typical

Maximum

Absolute Maximum Voltage Range on PWM Input (Purple Wire)

-2.0 V

10 V

+15 V

Input LOW Level Voltage Range (Purple Wire)

-2.0 V

0 V

+5.5 V

Input HIGH Level Voltage Range (Purple Wire)

+9.0 V

10 V

+15 V

Current into PWM Input (Purple Wire)

0 mA

—

1.2 mA

Source Current out of PWM Input (Purple Wire)

0 mA

—

2 mA

PWM Input Signal Frequency

500 Hz

—

1500 Hz

PWM Input Signal Positive Duty Cycle

0%

10-90%

100%

Notes:

1. PWM Dimmable version comes with an extra 2 wires +Purple/-Gray on the output side.

2. Below 10% Duty cycle proper dimming operation is not assured. Unit is not intended to dim below 5% at 0% Duty Cycle.

3. PWM dimmable version output will be 100% with Purple/Gray open and minimum with Purple/Gray Shorted.

0%

10%

20%

30%

40%

50%

60%

70%

80%

90% 100%

Positive Duty Cycle

Output Current / 1.0kHz Positive Duty Cycle

0

10

20

30

40

50

60

70

80

90

100

LED20W Series