G1630 Global Mixed-mode Technology Programmable 8 + 1 Channel Voltage Buffers with 2 Bank Memory for TFT LCD Features Applications Supply Operation Range : 7V to 20V 8+1 Channels : ---8 Channel Rail-to-Rail Programmable Gamma Buffers: 10 Bits Resolution for Each Channel 25mA Output Current for Each Channel BK_SEL for Switching Stored Data Sets ---1 Channel Rail-to-Rail VCOM Buffer: 7 Bits Adjustable Output ±100mA Output Current ±260mA Output Short-Circuit Current 20V/μs Slew Rate 2-Wire I2C Slave Mode Interface Using One Control Pin Enable to Store Data into Non-Volatile Memory (NVM) Non-Volatile Memory (NVM) Store Setting (at Least 100 Re-Write Times) QFN4X4-24 Package TFT-LCD Monitors LCD Televisions General Description The G1630 is 8+1 channel digital programed voltage reference buffer suitable for TFT-LCD application. It consists of 8 channels buffered voltage generator for gamma curve adjustment and 1 greater channel for VCOM reference voltage compensation. Each gamma and VCOM channel has its own 10bit digital-to-analog converter, and the digital data is programed through I2C interface then store in the integrated NVM. The NVM allows two sets of gamma and VCOM data to be stored. The data sets can be dynamic switched between two register banks obtains rapid changes on gamma curve. All of the channels are capable of driving heavy capacitive loads and offering large current sufficiently. (VCOM: 100mA; Gamma: 25mA) The G1630 is available in the QFN4X4-24 package. Ordering Information ORDER NUMBER MARKING TEMP. RANGE PACKAGE (Green/Halogen-Free) G1630Q51U 1630 -40°C to 85°C QFN4X4-24 Note: Q5:QFN4X4-24 1: Bonding Code U: Tape & Reel SDA 1 AGND GMA8 GMA7 HVDD 21 20 19 SCL 23 Typical Application Circuit 22 nWR 24 Pin Configuration From T-CON 18 GMA6 AVDD 17 GMA5 16 GMA4 DVDD 10µF 4.7K SCL 4.7K SDA A0 2 NC 3 DVDD 4 15 GMA3 A1 5 14 GMA2 AGND_AMP 6 13 GMA1 7 8 9 10 11 12 VCOM NC AVDD_AMP AVDD BK_SEL AGND Thermal Pad 10µF A0, A1 nWR AVDD or HVDD 10µF To VCOM AVDD BK_SEL GMA1 DVDD GMA2 SCL GMA3 SDA A0 G1630 A1 nWR AVDD_AMP GMA4 HVDD To HVDD or AVDD GMA5 GMA6 VCOM To Source Driver To Source Driver GMA7 AGND_AMP EP PAD G1630 QFN4X4-24 GMA8 Note: Recommend connecting the Thermal Pad to the Ground for excellent power dissipation. TEL: 886-3-5788833 http://www.gmt.com.tw Ver: 0.2 Sep 27, 2013 1