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FP6787 Datasheet(PDF) 1 Page - Fitipower Integrated Technology Inc. |
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FP6787 Datasheet(HTML) 1 Page - Fitipower Integrated Technology Inc. |
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1 / 20 page  1 FP6787/A-1.3-JAN-2012 FP6787/A 85T fitipower integrated technology lnc. Integrated Multi-Channel DC-DC Converter for TFT LCD Panel LINEAR REGULATOR Description The FP6787/A offers a compact power supply solution to provide all voltages required by thin-film transistor (TFT) LCD panel. The FP6787/A includes a high performance boost regulator, a low dropout linear regulator (LDO), a voltage detector, a VCOM buffer (unity-gain OPA), a positive charge pump and a negative charge pump to provide adjustable regulated output voltages. The boost converter provides the regulated supply voltage for the panel source driver ICs. The converter is a 640kHz current-mode regulator with an integrated 16V N- Channel 0.2Ω MOSFET. It provides fast transient response to pulsed loading while achieving efficiency over 85%. The device can produce output voltage as high as 14V from an input as low as 2.7V. FP6787/A includes internal 8ms soft start. The low dropout (LDO) linear regulator can supply up to 600mA current while input voltage is 5V. It uses an internal PMOS as the pass device. It is suitable for the supply voltage of the timing controller. The voltage detector monitors the supply voltage to issue a reset signal while the detected voltage is too low. The detecting level is decided by an external resistor divider and the delay time is programmable by an external capacitor. The VCOM buffer can drive the LCD VCOM voltage that features high short-circuit current (250mA), fast slew rate (12V/µs), wide bandwidth (12MHz) and rail-to-rail inputs and outputs. The positive charge pump controller provides regulated TFT gate-on voltage. The negative charge pump controller provides regulated TFT gate-off voltage. The regulation of the positive and negative charge pump is generated by the internal comparator that senses the output voltage and compares it with an internal voltage reference. Features ● High Efficiency ● Low Power Consumption ● 2.7V to 5.5V Input Supply Voltage 640kHz Current-Mode Boost Regulator ● Fast Transient Response to Pulsed Load ● Adjustable Output Voltage with ±1% Accuracy ● Built-In 16V, 3A, 0.2Ω N-Channel MOSFET ● High Efficiency up to 85% ● Built-in 8ms Soft-Start ● Over-Current Protection ● Over-Voltage Protection Low Dropout Linear Regulator ● 600mA Maximum Output Current ● Fixed Output Voltage : 3.3V (FP6787)and 2.5V (FP6787A) ● ±2% Output Voltage Accuracy Low Voltage Detector ● Programmable Detection Voltage ● ±2% Detection Voltage Accuracy ● Programmable Reset Delay Time ● Push-Pull Output Unity-Gain Operation Amplifier for VCOM Buffer ● Rail-to-Rail Input and Output ● 12V/µs Slew Rate and 12MHz Bandwidth ● 250mA Short-Circuit Current ● Charge Pump for VGH Regulation ● Charge Pump for VGL Regulation ● Over-Temperature Protection ● TSSOP-20 And TQFN-20 Exposed Pad Packages ● RoHS Compliant Applications ● Notebook Computers Displays ● LCD Monitor Panels |
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