Compal JHL90 - 4.3 Electrical characteristic

JHL90 Service Manual
Storage temperature: - 20°C ~ 70°C
Humidity: 0 ~ 90% without condensation
MTBF: MIN 50000 hours. (In Compal system)
4.3 Electrical characteristic
No Item Symbol Min. Typ. Max. Unit Comment
1 Input voltage INV_PWR 9 14.8 21 V
7.5V (continuous) can work
*Note 1
2 Input current Iin -- 0.33 -- A
3 Lamp current IL 3.0 -- 6.8 mA DAC=0V *Note 2
4 Lamp current IL 2.7 -- 6.3 mA 1.4.1.1.1 DAC=1V
5 Frequency F 45 55 65 KHz *Note 3
6 Output power Pout -- -- 4.5 W
7 Efficiency
η
80% -- -- --
8
Starting
voltage
V
s
1600 -- -- V At 0’C
9 Starting time Tvs 1 -- 1.5 Sec
2.8 3.3 3.6 V Backlight on/off signal
10 Dispoff#
0 V 0.5 0.8 Low level
11
Limited lamp
maximum
current
3.3
DAC-
BRIG
0 V *Note 2
142 150 158 Hz PWM signal frequency
3.0 3.3 3.6 V PWM signal amplitude
12
PWM signal
*note 4
INV_PW
M
30 -- 100 %
Period
Ton
Duty =
13
lamp current
over-shoot
-- 10 %
Line transient (10.8V to
21V/100us) and turn on
transient
14
Current
Waveform
factor
rms
p
I
I
1.27
2
1.56 Multiple
OR
rms
p
I
I
−
*10
15
Unbalance
Rate
rms
pp
I
II
−
−
-10% 0 +10% Multiple
16
Turn off
current
(Hight side)
IHL -- -- 0 A PWM=30%
4-13