深圳市科瑞芯电子有限公司

GMT（致新） G2731RG1U-K TQFN5X5-40 数字接口液晶显示偏置电源

Digital Interface LCD Bias Power

General Description
The G2731 is multi-functional power solution for
TFT-LCD panels thin-film transistor (TFT) liquid crystal
displays (LCD) panels. And all channel outputs Voltage
and power sequence can be programmed by I2C
interface and integrated Multiple-Time Programmable
(MTP) non-volatile memory.
One current mode asynchronous boost converter is for
AVDD with isolation Switching MOS. The converter
power MOS and isolation switching MOS are option
selected by I2C register and MTP.
VGH and VGL are regulated by current mode boost
controller and current mode buck-boost controller.
G2731 also provides charge pump regulator function for
both VGH & VGL voltage. The regulator type is selected
by I2C register and MTP. Additional VSS charge pump
regulator for GOA circuit is within G2731.
One channel programmable op-amp is designed to
drive the VCOM with the capability of high current and
wide bandwidth.
Thermal compensation function according to VT pin
voltage is provided for VGH or VGL voltage selected by
I2C register and MTP. VCOM voltage with thermal
compensation is also optional by I2C and MTP setting.
The G2731 is available in a 40-pin TQFN (5mm x 5mm)

package.    

应用原理图：