S1F78100Y2A Epson Electronics America, Inc., S1F78100Y2A Datasheet - Page 160

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

Output voltage response compensation
The S1F76380 series are provided with a response com-
pensation input. A response compensation capacitor is
connected between V
voltage generated by the boosted output voltage to be
suppressed to a minimum.
Standby mode and battery backup
The S1F76310 series are equipped with a standby
mode, initiated by connecting PS to GND.
TYPICAL APPLICATIONS
Example Circuits
The output current, I
ciency, Peff of a particular device in a series depends on
S1F76310 series
S1F70000 Series
Technical Manual
PWCR
RST
V
GND
O
V
V
circuit
I1
I2
S1F76310M/C
CONT
L
O
PS
, and power conversion effi-
RST
and V
V
SW
O
D
PWCR
, allowing the ripple
R1
V
V
I1
O
circuit
–
+
V
I1
C1
EPSON
In standby mode, the booster, including the crystal os-
cillator, is disabled (the switching transistor used to
drive the inductor is turned OFF) and the built-in
backup switch is turned ON, so that the input voltage at
V
function. PS is pulled-up internally, so when standby
mode is not required, the pin should be left open.
Powering up
Ensure that V
age (0.9V) before switching on the booster circuit.
One way to do this is to attach a battery so that V
drops below the minimum required for backup mode. If
no such external power supply is available, connect V
to V
first time.
factors such as the switching frequency, type of coil,
and the size and type of other external components.
S1F76380 series
I2
is output at V
I1
and hold PS Low when applying power for the
Battery
O
is at least the minimum operating volt-
GND
O
V
I1
. This enables the battery backup
PWCR
S1F76380M/C
L
C
PS
PS
S1F76310M
RST
V
V
SW
I2
S1F76300 Series
D
V
CONT
V
O
C1
O
4–15
never
I2