S-1132 Seiko Instruments, S-1132 Datasheet - Page 10

• Manufacturer Part Number: S-1132
• Description: High Ripple Rejection Low Dropout Middle Output Current CMOS Voltage Regulator
• Manufacturer: Seiko Instruments

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DataSheet
The S-1132 Series requires an output capacitor between the VOUT and VSS pins for phase compensation. Operation is
stabilized by a ceramic capacitor with an output capacitance of 0.1 µF or more in the entire temperature range. However,
when using an OS capacitor, tantalum capacitor, or aluminum electrolytic capacitor, a ceramic capacitor with a capacitance
of 0.1 µF or more and an ESR of 2.0 Ω or less is required.
The value of the output overshoot or undershoot transient response varies depending on the value of the output capacitor.
The required capacitance of the input capacitor differs depending on the application.
The recommended value for an application is 0.1 µF or more for C
output capacitor, perform sufficient evaluation, including evaluation of temperature characteristics, on the actual device.
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4
HIGH RIPPLE-REJECTION LOW DROPOUT MIDDLE OUTPUT CURRENT CMOS VOLTAGE REGULATOR
S-1132 Series
U
Standard Circuit
Application Conditions
Selection of Input and Output Capacitors (C
.com
Caution
Input capacitor (C
Output capacitor (C
ESR of output capacitor:
Caution
The above connection diagram and constant will not guarantee successful operation. Perform
thorough evaluation using the actual application to set the constant.
A general series regulator may oscillate, depending on the external components selected. Check
that no oscillation occurs with the application using the above capacitor.
IN
):
L
):
0.1 µF or more
0.1 µF or more
2.0 Ω or less
*1. C
*2. A ceramic capacitor of 0.1 µF or more can be used for C
INPUT
C
IN
*1
IN
is a capacitor for stabilizing the input.
Single GND
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VIN
ON/OFF
Seiko Instruments Inc.
Figure 11
VSS
VOUT
IN
IN
, C
and 0.1 µF or more for C
L
)
GND
C
L
*2
OUTPUT
L
; however, when selecting the
L
.
Rev.2.0
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