S1F76610M2E Epson Electronics America, Inc., S1F76610M2E Datasheet - Page 9

• Manufacturer Part Number: S1F76610M2E
• Description: Dc-dc Converter With High Efficiency And Low Power Consumption.
• Manufacturer: Epson Electronics America, Inc.

2
clocks generated in the CR oscillation circuit.
pump-up capacitor between CAP1+ and CAP1- and an external smoothing capacitor between V
CAP2-. For triple boosting, the triple input voltage V
external pump-up capacitor between CAP1+ and CAP1- and between CAP2+ and CAP2-, and connecting an
external smoothing capacitor between V
3
provides a temperature gradient to the reference voltage. There are three types of temperature gradients and
the appropriate one is selected by a signal sent from the temperature gradient selection circuit. The voltage
stabilizer stabilizes boosting output voltage V
output voltage can be set to any voltage between the reference voltage V
external resistor R
at timings when the signal is sent from the system (microprocessor, etc.).
S1F76610M2E Technical Manual (Rev.1.1)
Voltage converters (I) and (II) perform double boosting and triple boosting for input power voltage V
For double boosting, the double input voltage V
Fig.4.3 and 4.4 show the relationships between input and output voltages, using V
Note 1) In triple boosting, the double boosting output (-10V) cannot be obtained from the CAP2- pin.
Note 2) When connecting to the system power, CAP2- = -5V is obtained for double boosting output and
The reference voltage generator generates a reference voltage required to operate the voltage stabilizer, and
The voltage stabilizer, which is equipped with the power-off function, enables V
When XP
If the V
Voltage converters (I) and (II)
Reference voltage generator, voltage stabilizer
System power Note 2)
(+5V)
GND
(-5V)
REG
V
V
power V
CC
OFF
OUT
output ON/OFF control is not necessary, XP
Fig.5.3 Relationships between
= High (V
= -10V is obtained for triple boosting by setting V
RV
CC
and changing the voltage of the intermediate tap.
= +5V.
double boosting voltages
DD
V
V
CAP2-=-2V
DD
IN
), the V
=-5V
XP
=0V
V
V
REG
OFF
RV
DD
REG
IN
IN
=-10V
output is turned ON; when XP
R1
and V
Fig.5.5 Voltage stabilizer
OUT
OUT
IN
and outputs any voltage. As shown in Fig.5.5, the V
.
is obtained from the CAP2- pin by connecting an external
EPSON
IN
OFF
is obtained from the V
is fixed to High (V
Control signal
R
V
V
RV
Fig.5.4 Relationships between
DD
IN
=100kΩ to 1MΩ
=-5V
=0V
IN
V
OFF
REG
5. FUNCTIONAL DESCRIPTION
= system power GND; V
triple boosting voltages
= Low (V
=
R
RV
R1
RV
DD
and V
REG
DD
).
V
OUT
IN
RV
= 0V and V
), it is turned OFF.
OUT
output ON/OFF control
V
pin by connecting an
OUT
by connecting the
=3V
IN
IN
IN
DD
, CAP2, and
=-15V
= -5V.
= system
IN
using
REG
5