M220Z3-L03 Chi Mei, M220Z3-L03 Datasheet - Page 9

• Manufacturer Part Number: M220Z3-L03
• Description: TFT LCD Module
• Manufacturer: Chi Mei

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3.1.2 Vcc Power Dip Condition:
Dip condition:
3.2 BACKLIGHT UNIT
Note (1) LED current is measured by utilizing a high frequency current meter as shown below:
Note (2) P
Note (3) The lifetime of LED is defined as the time when it continues to operate under the conditions at
Parameter
(LED Converter Input Voltage)
(LED Converter Input Current)
Enable
Brightness control
(LED Light Bar Input Voltage)
(LED Light Bar Input Current)
(Power Consumption)
(LED Life Time)
Ta = 25±2
(a) When the brightness becomes ≦ 50% of its original value.
L
= I
4
L
0 .
×V
V
Generator
≤
L
o
Vcc
Signal
C and I = 20 mA(Per EA) until one of the following events occurs:
PWM
≤
4
5 .
V
,
Td
≤
PWMIN
Td
20
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ms
V
PWMIN
Symbol
L,
V
L
I
EN
Power Supply
I
V
LED
P
I
LED
L
LED
Converter
L
L
L
4.0V
LED
9 / 25
(20000)
(0.5)
Min.
GND
V
LED
4.5V
Value
(16.8)
(120)
(1.4)
(3.3)
(3.3)
Typ.
(12)
(33)
(1)
I
LED
X4
Vcc
Max.
Backlight
Module
LED
mA
KHz
Unit
V
A
V
V
V
Hrs
W
DC
DC
DC
DC
DC
DC
Issued Date: Mar. 4, 2008
Model No.: M220Z3-L03
Doc No.:
Power off :0.5V, typ
Power on :3.3V,typ.
8
Square Wave
(Duty 100%)
(Duty 100%)
Note
(1)
(1)
(2)
(3)
Tentative
Version 0.0
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