Description LEDs need constant current, for example normal LED has 350mA constant current, but 3.0-3.6V varying voltage, this board do this kind of work. IC Features: Simple few peripheral parts Wide input voltage range: 6V to 30V Up to 1.2A output current, Single pin on/off and brightness control using DC voltage or PWM Up to 1MHz switching frequency Typical 5% output current accuracy Inherent open-circuit LED protection High efficiency (up to 97%) Current setup: LED current is set through a sense resistor. The output current I is equal to 0.1/Rs. If want ~300mA, chose a 0.33 ohm resistor. If you want 350mA, choose a 0.27ohm resistor. (Check wiki page for further setup.) Breakout board support up to 1W, 10W, 30W high power LEDs in our store also can shortly or not fully power 50W or 100W LEDs. 33V for 100W LEDs can work but not recommdedded for long term. Tested 5 Meters LED white strips. Pin Definition: IN : Positive power supply IN-: Power supply negative. LED : Connect the LED’s anode LED-: Connect the LED’s cathode PWM: Light Strengh control: dimming control signal (2.8V-6V turn on) PWM signal limit frequency: 20HZ-20KHZ, recommendations: 1KHZ or so Each purchase is for 2 pieces boards. Documentation, schematic, datasheet please see on this page.
