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参数资料
| 型号： | ENH064V1-900 |
| 英文描述： | LDO with Low ISUPPLY, High PSRR; Temperature Range: -40°C to 85°C; Package: 8-DFN T&R |
| 中文描述： | 6.4inch显卡 |
| 文件页数： | 12/16页 |
| 文件大小： | 204K |
| 代理商： | ENH064V1-900 |
Original specifications created by Sharp.
5
Panelview (503) 690-2460 www.whiteedc.com
Panelview is a subsidiary of White Electronic Designs Corporation
ENH064V1-300/450
Panelview
Enhancing the Vision
BACKLIGHT DRIVING
The backlight system is an edge-lighting type with two CCFTs (Cold Cathode Fluorescent Tube).
The Characteristics of a single lamp are shown in the following table.
Parameter
Symbol
Min.
Typ.
Max.
Unit
Remark
Lamp Current
IL
2.0
6.0
6.5
mArms
(1)
Lamp Power Consumption
PL
2.16
W
(2)
Lamp Frequency
FL
20
35
60
KHz
(3)
Kick-off Voltage
VS
800
Vrms
Ta=25°C
1000
Vrms
Ta=0°C (4)
Lamp Life Time
LL
25000
hour
(5)
Notes:
1) Lamp current is measured with current meter for high frequency as shown below.
2) At the condition of YL=(300) cd/m2
3) Lamp frequency may produce interference with horizontal synchronous frequency, and this may cause horizontal 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.
4) The open output voltage of the inverter shall be maintained for more than 1 sec; otherwise the lamp may not be turned on.
5) Since lamp is consumable, the life time written above is referential value and is not guaranteed in this specification sheet by WEDC.
Lamp life time is defined that it applied either (1) or (2) under this condition (Continuous turning on at Ta=25°C, IL=6mArms)
1) Brightness becomes 50% of the original value under standard condition.
2) Kickoff voltage at Ta=0°C exceeds maximum value, 1000 Vrms. If operating under lower temp environment, the lamp exhaustion is
accelerated and the brightness becomes lower.
(Continuous operating for around 1 month under lower temp condition may reduce the brightness to half of the original brightness.)
In case of such usage under lower temp environment, periodic lamp exchange by Panelview is recommended.
Note:
1) 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 certain that poor lighting caused by the mismatch of the backlight and the inverter (mis-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
3 pin is VLOW
1
3
A
~
TA=25°C
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