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3. Recommended Operating Conditions
Item
2)
Supply Voltage
4)
Forward current
4)
Forward voltage
3)
"H" Level input
3)
"L" Level Input
Note 1) The module should be always operated within these ranges. The "Typ." shows the recommendable value.
Note 2) Checked Pin Terminal: V
Note 3) Checked Pin Terminal: R5 to R0, G5 to G0, B5 to B0, CLK, DE, H-sync, V-sync (GND: V
Note 4) One row LEDs (six-piece series connection) at 25 degrees C.
LED back light equivalent circuit
Note) Cautions on use the circuit of LED
1)
The current feedback function is needed to each LED line.
2)
To control brightness applying PWM (Pulse Width Modulation) drive should be strongly recommended. If to dim
brightness by LED current control, LED white color chromaticity distribution will become large. And applying same
wave form (peak, width & duty) for each LED lines is also recommended to prevent enlarge chromaticity distribution.
RECOMMENDED LED DRIVING BLOCK DIAGRAM
Toshiba Matsushita Display Technology Co.,Ltd
Specification No. TENTATIVE
Symbol
Min.
V
3.0
DD
I
---
LED
V
18.0
LED
V
0.8V
IH
DD
V
0
IL
(GND: V
=0V)
DD
SS
Terminal No.
No.1
No.2
No.3
No.4
No.5
No.6
LED
driving circuit
(Customer side)
1)
Typ.
Max.
3.3
3.6
15.0
25.0
19.2
19.8
---
V
DD
---
0.2V
DD
PWM
current output
Keep same wave form (peak, width & duty)
for each LED lines.
Date: 2008 – 11- 07
Date:
-
-
←# Special
Unit
Remarks
V
mA
V
V
V
=0V)
SS
New No. LTA057A341F-14
Old
No.
←& Addition
Sheet
23
← Change
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