S-812C Seiko Instruments Inc, S-812C Datasheet - Page 10

• Manufacturer Part Number: S-812C
• Description: HIGH OPERATING VOLTAGE CMOS VOLTAGE REGULATOR
• Manufacturer: Seiko Instruments Inc

HIGH OPERATING VOLTAGE CMOS VOLTAGE REGULATOR
S-812C Series
„ Notice
10
Capacitor C1 has an effect in minimizing output
fluctuation
variation and load variation.
optimum value in the actual device.
It is not also recommended to attach a
capacitor between the S-812 power source VIN
and VSS pins or between output VOUT and
VSS
oscillation at powering on might occur.
Wiring patterns for VIN, VOUT and GND pins should be designed to hold low impedance.
Note that output voltage may increase when a voltage regulator is used at low load current (less than 1 A).
At low load current less than 100 A output voltage may increase when the regulating operation is halted by
the ON/OFF pin.
To prevent oscillation, it is recommended to use the external components under the following conditions:
A voltage regulator may oscillate when the impedance of the power supply is high and the input capacitor is
small or not connected.
The application condition for input voltage and load current should not exceed the package power
dissipation.
SII claims no responsibility for any and all disputes arising out of or in connection with any infringement of
the products including this IC upon patents owned by a third party.
When mounting an output capacitor, the distance from the capacitor to the VOUT pin and to the VSS pin
should be as short as possible.
pins
Equivalent Series Resistance (ESR): 10
Input series resistance (RIN): 10
due
because
to
power-on,
output
Determine the
fluctuation
power
Seiko Instruments Inc.
line
or
or less
V
GND
IN
or less when an output capacitor is used.
VIN
C
Figure 13 Voltage Adjustment Circuit
IN
S-812C
VSS
Series
C1
ON/OFF
VOUT
R1
R2
Rev.1.0
C
V
L
OUT1