LED Over-Voltage Protection (LED OVP) comparator that provides Short String Protection (SSP). It is able to determine normal/abnormal conditions through internal comparators, and one such is the This is the transistor that is switched against an inductor to step-up the voltage, and the gate signal is produced only when the internal control logic detects normal conditions. The IC has internal control logic that produces the GATE signal to drive an external MOSFET transistor. That means that if all the LEDs in the matrix go open or short, it will prevent the television from switching ON. It is also able to sense the current and voltage of the LED matrix load and determine abnormal conditions. An important aspect of this IC is that it has built-in open and short LED protection circuitry. It also performs other functions such as voltage regulation between the LED strings, and provides a dimming facility using This is a voltage step-up IC that takes 5 V to 28 V at its input pin 15 (Vin) and raises it to drive four independent strings of LEDs. It is the main heart of the backlighting LED drive and the failure of this IC can cause the TV not to start. The earlier MP3394 was replaced by MPS3394S, which is an upgraded version of the same IC, and found in the 17IPS20 power supply board.
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