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S1D10605 Series
V
+
SS2
C
1
V
OUT
CAP3–
C
1
+
CAP1+
C
1
CAP1–
CAP2–
C
1
+
CAP2+
4 x step-up voltage circuit
V
= 0V
DD
V
= –3V
SS2
V
= 4 x V
= –12V
OUT
SS2
4x step-up voltage relationships
* The V
voltage range must be set so that the V
SS2
value.
* Low V
- V
voltage causes decrease in efficiency of step-up. Usage above 2.4V for V
DD
SS
The Voltage Regulator Circuit
The step-up voltage generated at V
Because the S1D10605 Series chips have an internal high-accuracy fixed voltage power supply with a 64-level
electronic volume function and internal resistors for the V
having to include high-accuracy voltage regulator circuit components.
Moreover, in the S1D10605 Series, thermal gradients have been prepared as V
(A) When the V
Voltage Regulator Internal Resistors Are Used
5
Through the use of the V
supply voltage V
can be controlled by commands alone (without adding any external resistors), making it possible to
5
adjust the liquid crystal display brightness. The V
| V
| < | V
|.
5
OUT
24
+
C
1
+
C
1
C
1
+
3 x step-up voltage circuit
V
= 0V
DD
V
= –3V
SS2
V
= 3 x V
OUT
3x step-up voltage relationships
outputs the liquid crystal driver voltage V
OUT
voltage regulator internal resistors and the electronic volume function the liquid crystal power
5
V
SS2
V
OUT
CAP3–
CAP1+
CAP1–
CAP2–
CAP2+
= –9V
SS2
Figure 7
terminal voltage does not exceed the absolute maximum rated
OUT
voltage regulator, systems can be constructed without
5
voltage can be calculated using equation A-1 over the range where
5
EPSON
+
C
1
+
C
1
OPEN
2 x step-up voltage circuit
V
= 0V
DD
V
= –4V
SS2
V
= 2 x V
= –8V
OUT
SS2
2x step-up voltage relationships
- V
is recommended.
DD
SS
through the voltage regulator circuit.
5
options: approximately –0.05%/°C.
REG
V
SS2
V
OUT
CAP3–
CAP1+
CAP1–
CAP2–
CAP2+
Rev.2.1
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