MAX9550 Maxim, MAX9550 Datasheet - Page 4

• Manufacturer Part Number: MAX9550
• Description: The MAX9550/MAX9551/MAX9552 provide a VCOM source for TFT LCDs
• Manufacturer: Maxim

High-Current VCOM Drive Buffers
for TFT LCDs
4
(V
DD
_______________________________________________________________________________________
3.0
2.5
2.0
1.5
1.0
0.5
0
= 16V, GND = 0V, V
5
vs. SUPPLY VOLTAGE
10
200mA/div
200mA/div
SUPPLY CURRENT
SUPPLY VOLTAGE (V)
5V/div
5V/div
V
T
I
V
OUT
OUT
A
I
CC
CC
= +85°C
15
T
A
CM
T
= +25°C
A
= -40°C
SHORT-CIRCUIT WAVEFORMS
= V
20
OUT
= V
5ms/div
25
DD
/ 2, C
Typical Operating Characteristics (continued)
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
L
0
= 1µF, T
-50
-25
A
= +25°C, unless otherwise noted.)
vs. TEMPERATURE
SUPPLY CURRENT
TEMPERATURE (°C)
0
25
50
200mA/div
10V/div
75
5V/div
5V/div
V
I
V
OUT
OUT
IN +
CC
100
AC-COUPLED
500mA/div
STARTUP WAVEFORM
50mV/div
V
I
OUT
OUT
20µs/div
R
S
= 2.2Ω, C
LOAD TRANSIENT (±600mA)
L
= 1µF, C
2µs/div
S
= 0.1µF