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      2. FP6783

        Description

        The FP6783 is an integrated power supply solution optimized for medium to large size thin-film transistor (TFT) liquid crystal displays (LCD’s).The boost converter operates at a frequency of 1.2MHz. The integrated N-channel FET has a typical current limit of 4.5A and can support output voltage up to 18V. A positive charge pump with an integrated driver can produce up to 36V of positive gate drive. The GPM is a flicker compensation circuit to reduce the coupling effect of gate lines; the gate-shaping timing is controlled by the timing-controller to modulate the Gate-On voltage, VGHM. It also can delay the Gate-On voltage during power-on to achieve a correct power-on delay time and the falling time of the Gate-On voltage are programmable by external capacitor and resistor. The FP6783 is available in a thin 20-pin 5x5 mm TQFN green package.

         
        Features

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        ● 2.5V to 5.5V Input Supply
        ● 1.2MHz Switching Frequency
        ● Current-Mode Boost Regulator
          -- Integrated 18V/4.5A FET
          -- Fast Transient Response to Pulsed Load
          -- High Efficiency
        ● GPM Controller with Adjustable Falling Time
          -- Flicker Compensator
          -- Power-on Sequence Control
        ● Over-Temperature Protection
        ● Over-Current Protection
        ● Over-Voltage Protection
        ● Under-Voltage Protection
        ● Charge Pump for VGH Regulation
        ● Charge Pump for VGL Regulation
        ● TQFN-20 Exposed Pad Package
        ● ROHS Compliant
         
        Applications
        ● TFT LCD for Notebook
        ● TFT LCD for Monitor
        ● TFT LCD for TV
         

        Pin Assignments

        Ordering Information

        WQ Package (TQFN-20)(5mm x 5mm)

        Figure 1. Pin Assignment of FP6783

         

         

        Typical Application Circuit

        Figure 2. Typical Application Circuit of FP6783
         
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