Akai LCT2785TA, Service Manual

Page: 37 / 64

3. ELECTRICAL CHARACTERISTICS
3.1 TFT LCD MODULE
Ta = 25 ± 2 ºC
Value
Parameter Symbol
Min. Typ. Max.
Unit Note
Power Supply Voltage V
CC
4.5 5.0 5.5 V (1)
Power Supply Ripple Voltage V
RP
- - 150 mV
Rush Current I
RUSH
- - 3.0 A (2)
White - 1.8 - A
Black - 1.2 - A
Power Supply Current
Vertical Stripe
I
CC
- 1.65 - A
(3)
Differential Input High
Threshold Voltage
V
LVTH
- - +100 mV
Differential Input Low
Threshold Voltage
V
LVTL
-100 - - mV
Common Input Voltage V
LVC
1.125 1.25 1.375 V
LVDS
Interface
Terminating Resistor R
T
100 ohm
Input High Threshold Voltage V
IH
2.7 - 3.3 V CMOS
interface Input Low Threshold Voltage
V
IL
0 - 0.7 V
Note (1) The module should be always operated within above ranges.
Note (2) Measurement Conditions:
+5.0V
(LCD Module Input)
FUSE
1uF
C3
0.01uF
C2
47K
VR1
1K
R2
2SK1470
Vcc
1uF
C1
Q2
+12V
(High to Low)
(Control Signal)
R1
47K
Q1 2SK1475
SW
Vcc rising time is 470us
0.1Vcc
0.9Vcc
GND
+5V
470us
Version 1.0
36