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Global Mixed-mode Technology Inc.
G1581
8 Channel Voltage Level Shifters for TFT LCD
Features
„ 0V to 6V Input Voltage Range
„ -10V to +35V Output Voltage Range
„ 150mA Continuous Output Current (per channel)
„ 500mA Peak Output Current (per channel)
„ Rise Time and Fall Time 12ns
„ Propagation Delay 25ns
„ 100kHz Input Frequency
„ Ultra Low Quiescent Current
„ TSSOP-20 & TQFN4X4-20 Package Available
Applications
„ TFT-LCD panels
Ordering Information
ORDER
NUMBER
MARKING
G1581D51U
G1581
G1581R91U
1581
Note :D5 : TSSOP-20
1: Bonding Code
U: Tape & Reel
R9: TQFN4X4-20
Pin Configuration
General Description
The G1581 consists of eight level shifters target to-
ward the needs of thin film transistor liquid crystal dis-
play (TFT LCD). The embedded level shifters can level
shift digital input signals to the output voltage levels
nearly equal to the supply voltages. It is capable of
+35V to -10V output voltage swing. The G1581 has
two positive power supplies VGH1 and VGH2, and
one negative power supply VGL. VGH1 and VGL are
the power supplies of the outputs 1 to 6. VGH2 and
VGL are the power supplies of the outputs 7 and 8.
This configuration enables the outputs 1 to 6 to pro-
vide slicing to the row drivers to reduce flicker, and the
outputs 7 and 8 to control possible supply lines. VGH2
should remain constant and it needs to be greater than
or equal to VGH1 at all times.
The G1581 is available in the TSSOP-20 & TQFN4X4-20
package.
TEMP.
RANGE
-40°C to 85°C
-40°C to 85°C
PACKAGE
(Green)
TSSOP-20
TQFN4X4-20
Typical Application Circuit
(SSOP/TQFN Pin No.)
GND 1
IN1 2
IN2 3
IN3 4
IN4 5
IN5 6
IN6 7
IN7 8
IN8 9
VGL 10
G1581
TSSOP-20
20 VGH1
19 OUT1
18 OUT2
17 OUT3
16 OUT4
15 OUT5
14 OUT6
13 OUT7
12 OUT8
11 VGH2
IN2 1
IN3 2
IN4 3
IN5 4
IN6 5
Thermal
Pad
15 OUT3
14 OUT4
13 OUT5
12 OUT6
11 OUT7
G1581 TQFN4X4-20
Note: Recommend connecting the Thermal Pad to
the Ground for excellent power dissipation.
10µF
10µF
1/19 GND
20/18
VGH1
0.1µF
10µF
2/20
3/1
4/2
5/3
6/4
7/5
8/6
9/7
IN1
IN2
IN3
IN4
IN5
IN6
IN7
IN8
10/8 VGL
0.1µF
11/9
VGH2
0.1µF
19/17 CL1 100pF
OUT1
OUT2 18/16 CL2 100pF
OUT3 17/15 CL3 100pF
G1581 OUT4 16/14 CL4 100pF
15/13 CL5 100pF
OUT5
OUT6 14/12 CL6 100pF
OUT7 13/11 CL7 100pF
CL8 100pF
OUT8 12/10
Ver: 0.5
May 19, 2011
TEL: 886-3-5788833
http://www.gmt.com.tw
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