s6b0724 Densitron Corporation, s6b0724 Datasheet - Page 30

• Manufacturer Part Number: s6b0724
• Description: 132 Seg / 65 Com Driver & Controller For Stn Lcd
• Manufacturer: Densitron Corporation

132 SEG / 65 COM DRIVER & CONTROLLER FOR STN LCD
Voltage Converter Circuits
These circuits boost up the electric potential between VCI and V
boosted voltage is outputted from VOUT pin.
26
* The VCI voltage range must be set so that the VOUT voltage does not exceed the absolute maximum
rated value
Figure 15. Four Times Boosting Circuit
Figure 13. Two Times Boosting Circuit
VDD
VDD
VOUT
C4+
C3+
C1+
C2+
VOUT
V
VCI
C1-
C2-
SS
C4+
C3+
C1+
C2+
V
VCI
C1-
C2-
SS
VCI
VCI
+
+
+
+
-
-
-
C1
+
C1
C1
C1
+
-
-
C1
C1
VOUT= 4
VCI
V
VOUT= 2
VCI
V
SS
SS
VCI
VCI
PRELIMINARY SPEC. VER. 1.1
Figure 16. Five Times Boosting Circuit
VDD
Figure 14. Three Times Boosting Circuit
SS
VDD
VOUT
VOUT
to 2, 3, 4 or 5 times toward positive side and
C4+
C3+
C1+
C2+
VCI
V
C1-
C2-
C4+
C3+
C1+
C2+
V
VCI
C1-
C2-
SS
SS
VCI
VCI
+
-
+
+
-
+
-
+
+
+
-
-
-
C1
C1
C1
C1
C1
C1
C1
+
-
VOUT= 3
C1
VOUT= 5
VCI
VCI
V
V
SS
SS
[C1 = 1.0 to 4.7 F]
VCI
VCI
S6B0724