SSD1801AV ETC [List of Unclassifed Manufacturers], SSD1801AV Datasheet - Page 19

• Manufacturer Part Number: SSD1801AV
• Description: LCD Segment / Common Driver with Controller for Character Display System
• Manufacturer: ETC [List of Unclassifed Manufacturers]

Figure 10 – Configurations for DC-DC Converter
NOTE: “-” Don’t use
LCD Driving Voltage Generator and Regulator
generates necessary voltage levels. This block consists of:
1. 2x/3x DC-DC voltage converter
to AV
configurations of the DC-DC converter for boosting are given in Figure 10.
3x DC-DC Converter
Remarks:
C1 = 2.2µF - 4.7µF
C2 = 0.1µF - 1µF
C1
SOLOMON
+
AVDD
This module generates the LCD voltage required for display driving output. It takes a single supply input and
The built-in Regulated DC-DC voltage converter is used to generate positive LCD driving voltage with reference
C2
C2
SS
+
+
.
“X” Pattern 0 or 1
07h (Pattern 7)
SSD1801
For SSD1801, it is possible to produce boosting from the internal reference voltage V
06h (Pattern 6)
AVDD
C1P
C1N
C2P
C2N
VOUT
C1
AVDD
+
2x DC-DC Converter
C2
+
C2
+
70h
71h
72h
73h
74h
75h
76h
77h
78h
79h
7Ah
7Bh
7Ch
7Dh
7Eh
7Fh
SSD1801
AVDD
C1P
C1N
C2P
VOUT
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Figure 11 - Configurations for Voltage Regulator
-
-
-
-
-
-
-
-
-
-
-
-
-
-
V
R1
V
X
X
X
X
X
X
X
X
X
X
X
X
X
X
EXT
F
Rev 1
01/2003
Remarks:
R1 and R2 = 500K-2.5M ohms
+
-
X
X
X
X
X
X
X
X
X
X
X
X
X
X
AVss
.
1
V
Converter
REF
R2
DC-DC
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
V
/
V
OUT
REF
L6
SSD1801 Series
X
X
X
X
X
X
X
X
X
X
X
X
X
X
REF
. Detail
18