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参数资料
| 型号： | ENH150X1-300 |
| 英文描述： | High Current LDO with Low IQ and High PSRR; Temperature Range: -40°C to 85°C; Package: 8-MSOP |
| 中文描述： | 15.0inch的XGA |
| 文件页数： | 11/15页 |
| 文件大小： | 196K |
| 代理商： | ENH150X1-300 |
Original specifications created by Sharp.
5
Panelview (503) 690-2460 www.whiteedc.com
Panelview is a subsidiary of White Electronic Designs Corporation
ENH150X1-200/300
Panelview
Enhancing the Vision
BACKLIGHT DRIVING
The backlight system is an edge-lighting type with two 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.
Parameter
Symbol
Min.
Typ.
Max
Unit
Remark
Lamp current range
IL
2.5
6.0
6.5
mArms
(1)
Lamp voltage
VL
690
Vrms
Ta=25°C
Lamp power consumption
PL
4.1
W
(2)
Lamp frequency
FL
20
60
70
KHz
(3)
Kick-off voltage
VS
850
Vrms
Ta=25°C (4)
1450
Vrms
Ta=0°C (4)
Lamp life time
LL
50000
hour
(5)
Notes:
1. A lamp can be lit in the range of the lamp current shown above.
Maximum rating for current is measured by high frequency current measurement equipment connected
to VLOW at circuit shown below. (Note: To keep enough kick-off voltage and necessary steady
voltage for CCFT.)
Lamp frequency: 20~60kHz
Ambient temperature: 0~50°C
2. Referential data per one CCFT by calculation (IL x VL).
The data does not include loss at inverter.
3. Lamp frequency of inverter may produce interference with horizontal synchronous frequency, and this
may cause horizontal beat on the display. Therefore, adjust lamp frequency and keep inverter far
from module or use electronic shielding between inverter and module to avoid interference.
4. The voltage above this value should be applied to the lamp for more than 1 second to startup. Otherwise,
the lamp may not turn on.
5. Lamp life time is defined as the time when either (1) or (2) occurs in the continuous operation under
the condition of Ta=25°C and IL = 6.0 ± 0.5mArms.
(1) Brightness becomes 50% of the original value under standard conditions.
(2) Kick-off voltage at Ta=0°C exceeds maximum value, 1450Vrms.
The performance of the backlight, for example life time or brightness, is influenced by the characteristics of the DC-AC inverter for the lamp.
When designing or ordering the inverter, make sure that poor lighting caused by the mismatch of the backlight and the inverter (miss-lighting,
flicker, etc.) do not occur. Once this is confirmed, the module should be operated in the same condition as it is installed in the instrument.
Inverter
Module
1
3
A
~
* 3pin is VLOW
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