LQ104V1LG81 Datasheet, PDF (11/22 Pages) Sharp Electrionic Components – DISPLAY DEVICE BUSINESS GROUP SHARP CORPORATION

LD-23810A- 8
6-2．LED backlight
Parameter
Ta＝+25℃
Symbol
Min.
Typ.
Max. Unit Remark
Supply voltage
VDD
10.8
12.0
13.2
V 【Note1】
IDD1
-
400
500
mA 【Note2】
Current dissipation
IDD2
-
-
10.0
μA 【Note3,4】
Permissive input ripple voltage VRP_BL
-
-
200 mVP-P VDD=+12.0V
High voltage VIH_BL1
9.0
-
VDD
V 【Note3】
XSTABY Low voltage VIL_BL1
-
-
0.4
V 【Note3】
Leak current ＩIL_XST
-
-
5.0
V
【Note3】　VDD=12V
High voltage VIH_BL2
9.0
-
VDD
V 【Note4】
VBR Low voltage VIL_BL2
-
-
0.4
V 【Note4】
Leak current ＩIL_VBR
-
-
1.5
V
【Note4】　VDD=12V
PWM frequency
fPWM
200
-
1,000
Hz 【Note4,5】
PWM duty ratio
DPWM
10
-
100
% 【Note4,5】
Life time
L
50,000
-
(Module)
-
h
【Reference】
【Note6】
【Note1】 On-off conditions for supply voltage
0.9 VDD
t ^{t 0.1 VDD}
VDD
78
XSTABY
VBR
Back light
(LED)
t11
OFF
PWM
ON
0.9 VDD
0.1 VDD
t9
t10
t12
OFF
20μs ≦ t7≦ 200ms
0ms ≦ t8≦
0ms ≦ t9≦
200ms ≦ t10≦
10ms ≦ t11≦
0ms ≦ t12≦
【Note2】 Current dissipation
Typ. value：　VDD= +12V、Duty=100%
Max. value：　VDD= +10.8V、Duty=100%
【Note3】 XSTABY is connected by the pull-down resistor of about 2.8kΩ.
【Note4】 VBR is connected by the pull-down resistor of about 9.6kΩ.
t13
【Note5】 PWM
fPWM　＝　1/t14
VBR
Duty 10% : Min. Luminance
t14
Duty 100% : Max. Luminance
Luminance changes in proportion to the duty ratio. (t13≧100μs)
When the frequency slows, the display fineness might decrease.
【*6】 Luminance becomes 50% of an initial value. (Ta＝25℃, PWM=100%)