1.14-42 inch LED Backlight Lamp Driver Board Constant current board 2.BOOST structure,Conversion efficiency reached more than 92% 3.Low heat of the Device, stability,have a service life 4.The PCB is small,Slim design,Current control error within 5% 5.This product is constant current board, voltage is automatically adapted Specifications: Common Electronic symbolic code of Backlight: VCC: The positive of voltage supply, Circuit supply voltage (voltage is usually 12V or 24V) ON/OFF,ON,EN,ON_BL: Switch signal pin PWM,PDIM,VDAJ,-PWM: Brightness adjusting pin GND: Ground (negative electrode) LED+: the positive electrode of Light emitting diode (lamp) LED-: the negative electrode of Light emitting diode (lamp) The temperature rise is controlled at about 25degrees (Temperature rise = device surface temperature - ambient temperature) Warm Tip Limit parameter refers to the the maximum capacity when product in the application process.In fact,please under the limit parameters to product reliability when using. PCB size: 4.5*8.5cm/1.77inch x 3.34inch Color: Blue Material: plastic Package Contents: 1 x TV Backlight Lamp Driver Board Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.