G1620 Global Mixed-mode Technology Programmable 14+1 Channel Voltage Buffers with NVM for TFT LCD Features Supply Operation Range : 6.5V to 18V Applications 14+1 Channels : ---14 Channel Rail-to-Rail Programmable Gamma Buffers 10 bits Resolution for each Channel 25mA Output Current for each Channel 2 Banks Registers Using Bank_Sel to Select which Bank Data Output ---1 Channel Rail-to-Rail Vcom Buffer: 7 Bits Adjustable Output ±100mA Output Current ±140mA 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) TQFN5X5-32 Package TFT-LCD Monitors LCD Televisions General Description The G1620 consists of 14+1 channel buffers target toward the needs of thin film transistor liquid crystal display (TFT LCD). This device incorporates one Vcom buffer and 14 gamma buffers, and are programmed through I2C interface. It contains two register banks which can store two different sets of gamma reference values. Each buffer is capable of driving heavy capacitive loads and offering large current loading (Vcom: 100mA, Gammas: 25mA). The G1620 is available in the TQFN5X5-32 package. Ordering Information ORDER NUMBER MARKING TEMP. RANGE PACKAGE (Green) 1620 -40°C to +85°C TQFN5X5-32 G1620RA1U Note: RA: TQFN5X5-32 1: Bonding Code U: Tape & Reel VCOM_OUT AGND VCOM_FB VCOM_ADJ SET AGND 28 27 26 25 200Ω 29 AVDD Typical Application Circuit 30 AVDD 32 31 Pin Configuration AVDD 10µF OUT1 1 24 OUT14 OUT2 2 23 OUT13 22 OUT12 21 OUT11 OUT3 3 OUT4 4 OUT5 5 20 OUT10 OUT6 6 19 OUT9 OUT7 7 18 OUT8 AVDD 8 17 DVDD SCL 16 3.3V nWR 3.3V 4.7kΩ 4.7kΩ 0.1µF 24.9kΩ to Source Driver 10Ω SCL 3.3V G1620 TQFN5X5-32 0.1µF DVDD 4.7kΩ 10Ω OUT1 AVDD DVDD 10µF SDA nWR 15 SDA 13 14 SCL DGND 12 BANK_SEL 9 11 AGND A0 STATIC_Hi 10 Thermal Pad AVDD 10µF A0 STATIC_Hi OUT14 0.1µF BANK_SEL VCOM_FB SDA From T-CON or Connect 200Ω to GND 10Ω VCOM_OUT AVDD nWR SET To Panel 10µF 10µF 10µF 0.1µF 100kΩ VCOM_ADJ AGND DGND 100kΩ 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 Nov 07, 2013 1