G1603 Global Mixed-mode Technology Programmable 12+1 Channel Voltage Buffers with NVM for TFT LCD Features Applications Supply Operation Range : 7V to 20V 12+1 Channels : ---12 Channel Rail-to-Rail Programmable Gamma Buffers 10 bits Resolution for each Channel 25mA Output Current for each Channel ---1 Channel Rail-to-Rail Vcom Buffer: 10 Bits Adjustable Output ±100mA Output Current ±300mA Output Short-Circuit Current 50V/μs Slew Rate Programmable VCOM Limits ---2 Banks Registers Using BKSEL to Select which Bank Data Output 2 2-Wire I C Slave Mode Interface Non-Volatile Memory (NVM) Store Setting (at Least 100 Re-Write Times) QFN4X4-24 Package TFT-LCD Monitors LCD Televisions General Description The G1603 consists of 12+1 channel buffers target toward the needs of thin film transistor liquid crystal display (TFT LCD). This device incorporates one Vcom buffer and 12 gamma buffers, and is programmed through I2C interface. It contains two register banks which can store two different sets of gamma and VCOM values. Each buffer is capable of driving heavy capacitive loads and offering large current loading (Vcom: 100mA, Gammas: 25mA). The G1603 is available in the QFN4X4-24 package. Ordering Information ORDER NUMBER MARKING TEMP. RANGE PACKAGE (Green) G1603Q51U 1603 -40°C to 85°C QFN4X4-24 Note: Q5:QFN4X4-24 1: Bonding Code U: Tape & Reel Pin Configuration Typical Application Circuit 18V AVDD GMA11 REF AGND_AMP 1 18 GMA10 DVDD 2 17 GMA9 16 GMA8 15 GMA7 SCL 3 SDA 4 BKSEL 5 14 GMA6 A0 6 13 GMA5 Bank1 GAMMA VCOM REF Bank1 GAMMA VCOM Bank1 GAMMA VCOM 12 Bank2 GAMMA VCOM MTP REG I2C REG Bank2 GAMMA VCOM 9 GMA1 10-BIT DAC 10 GMA2 10-BIT DAC 11 GMA3 10-BIT DAC 12 GMA4 10-BIT DAC 13 10-BIT DAC 14 GMA6 10-BIT DAC 15 GMA7 10-BIT DAC 16 GMA8 10-BIT DAC 17 GMA9 10-BIT DAC 18 GMA10 10-BIT DAC DAC REG G1603 QFN4X4-24 Note: Recommend connecting the Thermal Pad to the Ground for excellent power dissipation. 10-BIT DAC GMA5 MUX GMA4 11 GMA3 10 GMA2 9 GMA1 8 AVDD 7 Thermal Pad AGND REF 19 AVDD GMA12 VREF 20 AVDD_AMP DAC Reference 21 VCOM 22 23 24 VCOM_FB 8,21 10-BIT DAC DVDD SCL SDA A0 20 GMA12 18V 22 I2C INTERFACE AVDD_AMP 23 VCOM 24 1 7 AGND Ver: 0.1 Aug 21, 2012 LCD PANEL 19 GMA11 10-BIT DAC 2 3 4 6 Source Driver VCOM_FB AGND_AMP 5 BKSEL TEL: 886-3-5788833 http://www.gmt.com.tw 1