Hitachi CML170SXW, Service Manual

Page: 18 / 41

12
5. PK07006700/AMBIT T51I036.00 INVERTER BOARD
A. Description
The T51I036.00 Inverter board is designed for lighting up the back-lights of LCD module.
B. Electrical characteristics (FOR SAMSUNG PANEL/LT170E2-131)
MIN. TYP. MAX. COMMENT
INPUT VOLTAGE 11.4V 12V 12.6V
12V
±
5%
INPUT CURRENT -------- 2A --------
Vin=12V MAX.
BRIGHTNESS
Vbrite=0V
NO LOAD BACKLIGHT
VOLTAGE
-------- 690V rms. --------
LAMP CURRENT 6.2mA 13mA rms. 13.6mArms
DRIVING FREQUENCY 40KHz -------- 60KHz
EFFICIENCY -------- 78% -------- Vin = 12V,max brightness
Operating Life Time 20,000 ------- -------- Hours (note)
PWM dimming frequency 120HZ 140HZ 160HZ.
Brightness range 170cd/ 200cd/ --------
Vbrite 0V -------- 5V
0V, brightness max
Vin On/ OFF sequence -------- 0.5Sec --------
OLP Time -------- 1Sec -------- Open Lamp protection time
Duty control 20%
--------
100%
Strike voltage at 0
°
C
-------- --------
1420Vrms
Strike voltage at 25
°
C
-------- --------
1100Vrms
Note:
Life time(Hr) can be defined as the time in which it continues to operate under the
condition:
Ta=25
±
2
°
C, I
L
=13.0mArms until one of the following event occurs:
1. When the brightness becomes 50% above
2. When the startup voltage (Vs) at 0
°
C becomes higher than the maximal value of Vs
specified above