LK520D3LZ18 Sharp Electronics, LK520D3LZ18 Datasheet - Page 11

• Manufacturer Part Number: LK520D3LZ18
• Manufacturer: Sharp Electronics

Specifications of LK520D3LZ18

• Lead Free Status / Rohs Status: Compliant

4.4.
5. Absolute Maximum Ratings
[Note 2]Brightness Control
[Note] PWM frequency : 275±10Hz
[Note]There is a case that lamp mura may happen, depending on ambient temperature and dimming.
[Note 1] SELLVDS, R/L, U/D, FRAME, O/S_set, TEMP1~3
[Note 2] Humidity 95%RH Max.(Ta≦40°C)
PWM brightness control is regulated by analog input voltage (0V to 3.3V).
The back light system is direct type with 24 CCFTs (Cold Cathode Fluorescent Tube).
The characteristics of the lamp are shown in the following table. The value mentioned below is at the case of one
CCFT.
[Note]
Operation temperature
The back light system characteristics
• Lamp life time is defined as the time when brightness becomes 50% of the original value in the continuous
• Above value is applicable when the long side of LCD module is placed horizontally (Landscape position).
Life time
Storage temperature
12V supply voltage
24V supply voltage
[Reference]
Brightness ratio［%］
operation under the condition of Ta=25°C and brightness control(V
(Lamp lifetime may vary if LCD module is in portrait position due to the change of mercury density inside
the lamp.)
Item
Input voltage
Input voltage
(for Inverter)
(for Inverter)
(for Control)
(for Control)
Dimming level should be set according to your evaluation of actual display performance.
(Minimum input voltage 1.4V at below 15℃)
(Ambient)
Parameter
Input voltage [V]
Maximum wet-bulb temperature at 39 °C or less.(Ta>40°C)
No condensation.
Symbol
T
L
Symbol
VCC
V
V
Topa
Tstg
V
V
BRT
INV
ON
I
Min.
MIN
-
20
0
Condition
Ta=25 °C
Ta=25 °C
Ta=25 °C
Ta=25 °C
-
-
TYP
<->
<->
60000
Typ.
MAX
100
3.3
-0.3 ~ 3.6
-25 ~ +60
0 ~ + 14
0 ~ +29
0 ~ +50
Ratings
Max.
0 ~ + 6
-
BRT
=100%).
0V: Dark - 3.3V: Bright
Hour
Function
Unit
Unit
°C
°C
V
V
V
V
Remarks
Ta=25℃
[Note 1]
[Note 2]
Remark
[Note]