Acer AL922, Manual

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5. INVERTER BOARD
5.1 Description
The Inverter board is designed for lighting up the back-lights of LCD module.
5.2 Electrical characteristics
5.2.1 FOR Fujitsu PANEL FLC48SXC8V
MIN. TYP. MAX. COMMENT
INPUT VOLTAGE 11.4V 12.0V 12.6V 12V±5%
INPUT CURRENT -------- 2A _
Vin=12V,
Vbrite=3.3V
Normal BACKLIGHT
VOLTAGE
-------- 700V rms. --------
LAMP CURRENT
--------. 7mA rms 8mA rms
DRIVING
FREQUENCY
40KHz 50KHZ 60KHz
EFFICIENCY -------- 80% --------
Vin = 12V,max
brightness
Vin ON/OFF sequence -------- 1S --------
OLP TIME -------- 3S _
Open lamp
protection time
BRIGHTNESS
RANGE
10% -------- 100%
Brightness control 0V _ 3.3V
3.3V, brightness
Max.
Brightness _ 220cd/m
2
_
Strike voltage at 0°C 1600 Vrms _ _
Operating life time 20,000 hrs _ _ (note)
Note:
Life time (hr) can be defined as the time in which it continues to operate under the condition:
Ta=25±2°C, IL =7 mArms until one of the following event occurs:
1. When the brightness becomes 50 %
2. When the startup voltage (Vs) at 0°C becomes higher than the maximal value of Vs specified above.