Pt4115 Schaltung. A logic level below 0 3v at dim forces pt4115 to turn off the led and the logic level at dim must be at least 2 5v to turn on the full led current. The dim pin can be driven by an external dc voltage.
The pt4115 allow dimming with a pwm signal at the dim input. The rs resistor is calculated using this formula. The pt4115 includes the power switch and a high side output current sensing circuit which uses an external resistor to set the nominal average output current and a dedicated dim input accepts either a dc voltage or a wide range of pulsed dimming.
Applying a voltage of 0 3v or lower to the dim pin turns the output off and.
Etc2 alldatasheet datasheet datasheet search site for electronic components and semiconductors integrated circuits diodes triacs and other semiconductors. Pt4115 datasheet the circuit is quite simple and uses a 12vac to 24vac power supply or you can provide dc voltage that must not exceed 30v but your must remove d1 d2 d3 and d4 diodes. A logic level below 0 3v at dim forces pt4115 to turn off the led and the logic level at dim must be at least 2 5v to turn on the full led current. The pt4115 includes the power switch and a high side output current sensing circuit which uses an external resistor to set the nominal average output current and a dedicated dim input accepts either a dc voltage or a wide range of pulsed dimming.
