Features; Absolute Maximum Rating; Electrical Characteristic - Compal JHT01 Service Manual

PWM burst mode. The PWM burst mode is that turning on and off the lamp at a
rate of 150Hz. The effective brightness is a function of the duty cycle.
4.1

Features

• Wide range 9V to 21V input voltage
• Brightness adjustment by PWM burst mode.
• Close loop controls lamp current.
4.2

Absolute maximum rating

• Environment temperature:
Operating temperature: 0°C ~ 55°C
Storage temperature: -20°C ~ 70°C
Humidity: 0 ~ 90% without condensation
MTBF: MIN 50000 hours. (In Compal system)
4.3

Electrical characteristic

No Item
1 Input voltage INV_PWR
2 Input current
3 Lamp current
4 Lamp current
5 Frequency
6 Output power
7 Efficiency
Starting
8
voltage
9 Starting time
10 Dispoff#
Limited lamp
11 maximum
current
PWM signal
12
*Note 4
Symbol Min. Typ.
9 14.8
Iin -- 0.33
IL 3.0 --
IL 2.7 --
F 45 55
Pout -- --
η
80% --
V 1600 --
s
Tvs 1 --
2.8 3.3
0 0.5
DAC-
0
BRIG
INV_PW
142 150
M
3.0 3.3
Max. Unit
7.5V (continuous) can work
21 V
-- A
6.8 mA DAC=0V
6.3 mA 1.4.1.1.1 DAC=1V
65 KHz
4.5 W
-- --
-- V
1.5 Sec
3.6 V Backlight on/off signal
0.8 V
3.3 V
158 Hz PWM signal frequency
3.6 V PWM signal amplitude
JHT01 Service Manual
Comment
*Note 1
*Note 2
*Note 3
At 0'C
Low level
*Note 2
4-13