TK71541SCL データシートの表示（PDF） - Toko America Inc
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TK71541SCL Datasheet PDF : 13 Pages
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TK715xx
APPLICATION INFORMATION
INPUT-OUTPUT CAPACITORS
Linear regulators require input and output capacitors in order to maintain regulator loop stability. The output capacitor
should be selected within the Equivalent Series Resistance (ESR) range as shown in the graphs below for stable
operation. When a ceramic capacitor is connected in parallel with the output capacitor, a maximum of 1000 pF is
recommended. This is because the ceramic capacitor's electrical characteristics (capacitance and ESR) vary widely over
temperature. If a large ceramic capacitor is used, a resistor should be connected in series with it to bring it into the stable
operating area shown in the graphs below. Minimum resistance should be added to maintain load and line transient
response.
Note: It is very important to check the selected manufacturers electrical characteristics (capacitance and ESR) over
temperature.
715xxS
CL
ESR
TK715xxS
CL
ESR
Note: It is not necessary to connect a ceramic capacitor
in parallel with an aluminum or tantalum output capacitor.
CL = 1.0 µF
100
10
STABLE
1
OPERATION
AREA
0.1
0 .01
0
50
100
IOUT (mA)
CL = 2.2 µF
100
10
STABLE
1
OPERATION
AREA
0.1
0 .01
0
50
100
IOUT (mA)
CL = 4.7 µF
100
10
STABLE
1
OPERATION
AREA
0.1
0 .01
0
50
100
IOUT (mA)
Page 10
January 1999 TOKO, Inc.
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