S1F78100Y2A Epson Electronics America, Inc., S1F78100Y2A Datasheet - Page 87

• Manufacturer Part Number: S1F78100Y2A
• Description: High Precision Voltage Regulators
• Manufacturer: Epson Electronics America, Inc.

S1F76640 Series
Note 1 :
Note 2 :
Note 3 :
Reference Voltage Generator, Voltage Stabilization Circuit
circuit and adds temperature gradient to reference voltage. Three temperature gradients are available, and signal
from the temperature gradient selection circuit select one of them.
an external resistor R
V
signals from the system side (microprocessor, etc.) When P
P
2–44
OFF
REG
The voltage stabilization circuit has power off function and can control ON/OFF of V
The reference voltage generator generates reference voltage necessary for operation of the voltage stabilization
The voltage stabilization circuit stabilizes the step-up output voltage V
is Low (GND), it is turned off. When the control is not necessary, P
output voltage can be set to optional voltages between the reference voltage V
Example of 2 times step-up
At the 3 times step-up time, 2 times step-up output (–10V) cannot be taken out from the CAP2– pin.
At the 4 times step-up time, 2 times step-up output (–10V) cannot be taken out from the CAP2– pin.
At the 4 times step-up time, 3 times step-up output (–15V) cannot be taken out from the CAP3– pin.
CAP1+=2V
V
GND=0V
DD
potential relations
=5V
Figure 5-3
RV
DD
is connected as shown in Figure 5-5 and the potential of the intermediate tap is changed,
=10V
V
P
V
REG
OFF
RV
Figure 5-6 Voltage Stabilization Circuit
SS
R
Example of 3 times step-up
CAP2+=3V
1
V
GND=0V
DD
potential relations
=5V
EPSON
Figure 5-4
DD
R
=15V
OFF
RV
Control signal
=100k
is high (V
Note 1
V
REG
to 1M
DD
O
=
OFF
and outputs optional voltages. When
), V
CAP3+=4V
R
R
V
GND=0V
RV
Example of 4 times step-up
is fixed to High (V
1
DD
REG
=5V
· V
potential relations
RV
output is turned on, and when
RV
DD
and V
Figure 5-5
REG
=20V
O
output according to
Note 3
Note 2
.
DD
Technical Manual
S1F70000 Series
).