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Global Mixed-mode Technology Inc.
G1574
18+1 Channel Voltage Buffers for TFT LCD
Features
„ Supply Operation Range : 6.5V to 19.5V
„ 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
Applications
„ TFT-LCD monitors
„ LCD televisions
General Description
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).
The G1574 is available in the TQFP7X7-48 and
TQFP7X7-48 (FD) package.
Ordering Information
ORDER
NUMBER
MARKING
TEMP.
RANGE
PACKAGE
(Green)
G1574H71U 1574 -40°C to 85°C TQFP7X7-48
G1574F71U 1574 -40°C to 85°C TQFP7X7-48 (FD)
Note : H7 : TQFP7X7-48
F7 : TQFP7X7-48 (FD)
1: Bonding Code
U: Tape & Reel
Pin Configuration
Oo 1
No 2
Mo 3
Lo 4
Ko 5
Jo 6
VSS 7
VDD 8
Io 9
Ho 10
Go 11
Fo 12
36 Oi
35 Ni
34 Mi
33 Li
32 Ki
31 Ji
30 VSS
29 VDD
28 Ii
27 Hi
26 Gi
25 Fi
Oo 1
No 2
Mo 3
Lo 4
Ko 5
Jo 6
VSS 7
VDD 8
Io 9
Ho 10
Go 11
Fo 12
Thermal
Pad
36 Oi
35 Ni
34 Mi
33 Li
32 Ki
31 Ji
30 VSS
29 VDD
28 Ii
27 Hi
26 Gi
25 Fi
G1574 TQFP7X7- 48
G1574 TQFP7X7- 48 (FD)
Note: Recommend connecting the Thermal Pad to the VSS for excellent power dissipation.
Ver: 0.3
Dec 22, 2008
TEL: 886-3-5788833
http://www.gmt.com.tw
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