STK433-760-E Ver la hoja de datos (PDF) - SANYO -> Panasonic
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STK433-760-E Datasheet PDF : 12 Pages
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STK433-760-E
Recommended Values for Application Parts (for the test circuit)
Symbol
R01, R02
R03
Recommen
ded Value
100Ω
-
Description
Larger than
Recommended Value
Smaller than
Recommended Value
Ripple filtering resistors (Fusible resistors are desirable)
Decreased pass-
Increased pass-
(Used with C03, C04 to form a ripple filter.)
through current at high through current at high
frequencies.
frequencies.
Use a limiting resistor according to the stand-by control voltage in order to control the stand-by pin voltage VST within the
rating.
(R04)
R11, 12
about 10kΩ
4.7Ω
Pull down resistance (at detection terminal use).
Noise-absorbing resistors
-
(min) 5.1kΩ
-
-
R13, 14
4.7Ω/1W Oscillation prevention
-
-
R15, 16
R21, 22
56kΩ
1kΩ
Used with R23 and R24 to determine the voltage gain VG.
Input filtering resistor
VN offset
(Ensure R15=R25, R16=R26 when changing.)
-
-
R23, 24
R25, 26
1.8kΩ
56kΩ
Used with R15 and R16 to determine the voltage gain VG. (VG
should desirably be determined by the R23 and R24 value.)
Input bias resistors (Virtually determine the input impedance.)
Likely to oscillate
(VG<30dB)
-
None
(VG≤42dB)
-
R27, 28
560Ω
Oscillation prevention
Likely to oscillate
C01, 02
C03, C04
(C05)
C11, 12
100μF
100μF
About 0.1μF
0.1μF
Oscillation prevention
• Insert the capacitors as close to the IC as possible to decrease
-
-
the power impedance for reliable IC operation (use of
electrolytic capacitors are desirable).
Decoupling capacitors.
Increase in ripple components that pass into the
• Eliminate ripple components that pass into the input side from
input side from the power line.
the power line. (Used with R01, R02 to form a filter.)
A constant is adjusted when detection voltage appears at the time of latch rise (at detection terminal use).
Oscillation prevention (Mylar capacitors are recommended.)
Likely to oscillate
C13, 14
15pF
Oscillation prevention
Likely to oscillate
C21, 22
470pF
Input filter capacitor
(Used with R21 and R22 to form a filter that suppresses high-
-
-
frequency noises.)
C23, 24
2.2μF
Input coupling capacitor (block DC current)
-
-
C25, 26
C27, 28
10μF
NF capacitor
(Changes the low cutoff frequency; fL=1/ (2π • C25 • R23)
120pF
Oscillation prevention
Increase in low-
frequency voltage gain,
with higher pop noise
at power-on.
Likely to oscillate
Decrease in low-
frequency voltage gain
L11, 12
1μH
Oscillation prevention
None
Likely to oscillate
No. A1476-6/12
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