LQ150X1LGB1 Sharp Electronics, LQ150X1LGB1 Datasheet - Page 13

• Manufacturer Part Number: LQ150X1LGB1
• Manufacturer: Sharp Electronics

Specifications of LQ150X1LGB1

• Lead Free Status / Rohs Status: Compliant

6-2. Backlight
Lamp current range
Lamp voltage
Lamp power consumption
Lamp frequency
Kick-off voltage
Lamp life time
Note1
Note2
Note3
Note4
Note5
The back light system is an edge-lighting type with four 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.
CCFT Model Name KTBE222MSTF-320MA262-Z (STANLEY ELECTRIC CO., LTD.)
Parameter
Ambient temperature : 0 50
cause beat on the display. Therefore lamp frequency shall be detached as much as possible from the
horizontal synchronous frequency and from the harmonics of horizontal synchronous to avoid
interference.
The data don’t include loss at inverter.
The kick-off voltage may rise up in the user set, please decide the open output voltage by checking not
to occur lighting failure under operating state.
The open output voltage should be applied to the lamp for more than 1 second to startup. Otherwise
the lamp may not be turned on.
(Landscape position)
Lamp life time is defined as the time when either
the condition of Ta=25
Maximum rating for current is measured by high frequency current measurement equipment
connected to V
Lamp frequency : 40 70kHz
A lamp can be light in the range of lamp current shown above.
Referential data per one CCFT by calculation ( I
Lamp frequency may produce interference with horizontal synchronous frequency, and this may
This is transformer output voltage at 27pF for the ballast capacitor of a DC-AC inverter.
Above value is applicable when lamp (the long side of LCD module) is placed horizontally.
(Lamp lifetime may vary if lamp is in portrait position due to the change of mercury density
(Note : To keep enough kick-off voltage and necessary steady voltage for CCFT.)
inside the lamp.)
Brightness becomes 50% of the original value under standard condition.
Kick-off voltage at Ta=0
Module
LOW
at circuit showed below.
Symbol
V
Vs
P
F
T
I
L
L
L
L
L
and I
1
2
50,000
Min.
L
3.5
40
=6.0 mA rms.
exceeds 1480 V
2pin V
Typ.
3.75
625
6.0
LOW
60
L
rms
Max.
1480
4.32
720
7.5
70
value.
or
V
L ) .
V
mArms
Vrms
Vrms
hour
occurs in the continuous operation under
kHz
Unit
W
Inverter
ballast capacitor(27pF)
Ta=25 , I
Ta=0
Note1
Note2 , I
Note3
Note5
Remark
Note4
L
L
=6.0mArms
=6.0mArms