LQ150X1LW72/ES Sharp Electronics, LQ150X1LW72/ES Datasheet - Page 11

• Manufacturer Part Number: LQ150X1LW72/ES
• Manufacturer: Sharp Electronics

Specifications of LQ150X1LW72/ES

• Lead Free Status / Rohs Status: Supplier Unconfirmed

【Note4】Kick-off voltage value is described as the index in the state of lamp only.
6-2. Backlight
【Note1】 A lamp can be light in the range of lamp current shown above.
【Note2】 Referential data per one CCFT by calculation ( I
【Note3】 Lamp frequency of inverter may produce interference with horizontal synchronous frequency, and
【Note5】 Lamp life time is defined as the time when either ① or ② occurs in the continuous operation under
【Note6】
of the DC-AC inverter for the lamp. When you design or order the inverter, please make sure that a poor lighting
caused by the mismatch of the backlight and the inverter (miss-lighting, flicker, etc.) never occurs. When you
confirm it, the module should be operated in the same condition as it is installed in your instrument.
or lamp voltage waveform detection circuit, which should have individual control of each lamp.
flow into one lamp when the other one is not in operation.
【Note7】Under the environment of 10lx or less, miss-lighting delay may occur.
Lamp current range
Lamp voltage
Lamp power consumption
Lamp frequency
Kick-off voltage
Lamp life time
The performance of the backlight, for example lifetime or brightness, is much influenced by the characteristics
Use the lamp inverter power source incorporating such safeguard as overvoltage / overcurrent protective circuit
In case one circuit without such individual control is connected to more than two lamps, excessive current may
The back light system is an edge-lighting type with 4 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.）
The kick-off voltage is estimated to be risen up as approx. +200V in the state of module only, and the
further rise up can be seen according to the assembling status of user cabinet. Please set the kick-off
voltage of inverter to avoid the lighting failures in the state of operation. Please design the inverter so
that its open output voltage can be connected for more than 1 second to startup. Otherwise, the lamp
may not be turned on. But, please set as 100ms when the ambient luminance around the lamp is more
than 1lux.
this may cause horizontal beat on the display. Therefore, adjust lamp frequency, and keep inverter as far
as from module or use electronic shielding between inverter and module to avoid interference.
the condition of Ta=25℃ and the lamp current value indicated to the Remark .
Parameter
Module
Ambient temperature : 0∼50℃
The data does not include loss at inverter .
Maximum rating for current is measured by high frequency current measurement equipment
connected to V
Lamp frequency : 40∼70kHz
(Note : To keep enough kick-off voltage and necessary steady voltage for CCFT.)
① Brightness becomes 50% of the original value under standard condition.
② Kick-off voltage at Ta=0℃ exceeds maximum value,1480Vrms .
LOW
CN2∼5:1pin
CN2∼5:2pin
at circuit showed below.
Symbol
V
Vs
P
F
T
I
L
L
L
L
L
50,000
Ａ
∼
Min.
3.5
−
−
40
−
−
Typ.
615
GND
6.5
4.0
60
−
−
−
V
Inverter
H
L
Max.
1080
1480
× V
4.55
700
7.5
70
−
L ) .
mArms 【Note1】
Vrms
Vrms
Vrms
Hour IL=6.5mArms 【Note5】
KHz 【Note3】
Unit
W
【Note2】,IL=6.5mArms
Ta=25℃,IL=6.5mArms
Ta=25℃【Note4】
Ta=0℃【Note4】
Remark
LD-18322A-8