TPS65191

用于 LCD 显示屏的 7 通道电平转换器（三通道扫描驱动器）

The is a triple high-voltage scan driver to drive an ASG amorphous silicon gate circuit on TFT glass. Each single high-voltage scan driver receives logic-level inputs of CPVx and generates two high-voltage outputs of CKVx, CKVBx. The device receives a logic-level input of STV and generates a high-voltage output of STVP. These outputs are swings from Voff –28 V to Von 35 V and are used to drive the ASG circuit and charge/discharge the capacitive loads of the TFT LCD. In order to reduce the power dissipation of device, a charge-share function is implemented. The device features discharge function, which shorts Voff to GND in order to shut down the panel faster when the LCD is turned off.

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Triple High-Voltage Scan Driver

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Scan Driver Output Charge Share

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High Output-Voltage Level: Up to 35 V

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Low Output-Voltage Level: Down to –28 V

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Logic-Level Inputs

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32-pin 5-mm × 5-mm QFN Package

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APPLICA ONS

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TFT LCD Using ASG Amorphous Silicon Gate Technology