G1574 Global Mixed-mode Technology Inc. 18+1 Channel Voltage Buffers for TFT LCD Features General Description Supply Operation Range : 6.5V to 19.5V The G1574 consists of 18+1 channel buffers target toward the needs of thin film transistor liquid crystal display (TFT LCD). This device incorporates one Vcom buffer and 18 gamma buffers. Each buffer is capable of driving heavy capacitive loads and offering large current loading (Vcom: 100mA, Gammas: 30mA). 18+1 Channels : --- 18 Gamma Buffers with each Continuous Output Current of ±30mA (MAX) --- 1 Vcom Buffer with Continuous Output Current of ±100mA (MAX) Supply Current at VDD=10V : 14mA (TYP) Unity Gain Vcom Buffer Capable of Driving Large Capacitive Loads Input Common Mode Range beyond the Rails Rail-to-Rail Output Voltage Swing Peak Output Current : --- Gamma Buffer : ±120mA --- Vcom Buffer : ±300mA TQFP7X7-48 & TQFP7X7-48 (FD) Package Available The G1574 is available in the TQFP7X7-48 and TQFP7X7-48 (FD) package. Ordering Information ORDER MARKING NUMBER Applications TFT-LCD monitors LCD televisions PACKAGE (Green) TQFP7X7-48 G1574H71U 1574 -40°C to 85°C G1574F71U 1574 -40°C to 85°C TQFP7X7-48 (FD) Note : H7 : TQFP7X7-48 1: Bonding Code U: Tape & Reel TEMP. RANGE F7 : TQFP7X7-48 (FD) Ri Qi Pi 39 38 37 40 VSS VDD INCOM VDD 43 41 VSS 44 42 Ro OUTCOM 46 45 Po Qo 48 Pi 37 47 Ri Qi 38 40 39 VSS VDD INCOM VDD 43 41 VSS 44 42 Ro OUTCOM 46 47 45 Po Qo 48 Pin Configuration Oo No 1 36 Oi 36 Oi 35 Ni Oo No 1 2 2 35 Ni Mo 3 34 Mi Mo 3 34 Mi Lo 4 33 Li Lo 4 33 Li Ko 5 32 Ki 5 32 Ki Jo 6 31 Ji Ko Jo 31 Ji VSS 7 30 VSS VSS 7 30 VSS VDD 8 29 VDD VDD 8 29 VDD Io 9 28 Ii Io 9 28 Ii 6 Thermal Pad Ei 24 Di 23 Bi 21 Ci 22 Ai 20 Ao 19 Bo 17 VSS 18 Co 15 Eo 13 VDD 16 Fi Do 14 25 Ei 24 Fo 12 Di 23 Fi Bi 21 Ci 22 25 Ai 20 Gi Fo 12 Ao 19 Hi 26 Bo 17 27 Go 11 VSS 18 Ho 10 Gi Co 15 Hi 26 VDD 16 27 Eo 13 Do 14 Ho 10 Go 11 G1574 TQFP7X7- 48 (FD) G1574 TQFP7X7- 48 Note: Recommend connecting the Thermal Pad to the VSS for excellent power dissipation. TEL: 886-3-5788833 http://www.gmt.com.tw Ver: 0.3 Dec 22, 2008 1