stk404-230-e Sanyo Semiconductor Corporation, stk404-230-e Datasheet - Page 5

• Manufacturer Part Number: stk404-230-e
• Description: One-channel Class Audio Power Amplifier 100w
• Manufacturer: Sanyo Semiconductor Corporation

Recommended External Parts
Sample PCB Trace Pattern
R03, R04
R24, R25
C01, C02
C05, C06
Symbol
R05
R08
R11
R14
R18
R21
R30
C07
C10
C13
C16
C19
C22
L01
Stand-by circuit
Recommended
0.22Ω±10%,
100μF/100V
100μF/100V
Remarks *4
2.2μF/50V
22μF/10V
100Ω/1W
4.7Ω/1W
470pF
100pF
1.8kΩ
Value
0.1μF
56kΩ
56kΩ
4.7Ω
1kΩ
3μH
3pF
5W
Ripple filtering resistors (Use of fusing resistors is
desirable. Used with C05 and C06 to form a ripple filter.)
Oscillation prevention resistor
Used with R18 to determine the voltage gain VG.
(VG should desirably be determined by the R14 value.)
Output emitter resistors (Use of cement resistor is
desirable)
• 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).
Eliminate ripple components that pass into the input side from
the power line. (Used with R03 and R04 to form a ripple filter.)
(Changes the low cutoff frequency; ex/fL=1/2π•C13•R14)
suppresses high-frequency noises.)
Virtually determines the input impedance.
Noise suppression resistor
Used with R14 to determine the voltage gain VG.
Input filtering resistor
A resistor must be used such that the voltage at the Stand-by pin (pin 1) does not exceed the maximum rating.
Oscillation prevention capacitors.
Decoupling capacitors.
Oscillation prevention capacitor
Oscillation prevention capacitor
NF capacitor
Input coupling capacitor (block DC current)
Input filter capacitor (Used with R21 to form a filter that
Oscillation prevention capacitor
Oscillation prevention inductance
J5
Add R50 10kΩ/0.25W
Description
STK404-230-E
VN offset (Ensure R05=R18 when changing.)
It may oscillate (Vg<30dB)
Decrease in maximum
output power
Increase in ripple components that pass into the input
side from the power line
It may oscillate
It may oscillate
Increase in low-frequency
voltage gain, with higher
pop noise at power-on.
It may oscillate.
None
Recommended Value
Connect by solder
Larger than
C10
DC offset
-
-
-
-
-
-
-
-
Over current
Increase in through current
at high frequencies.
None
It may cause thermal-
runaway.
Decrease in low-
frequency voltage gain
It may oscillate.
Recommended Value
Smaller than
No. A1244-5/12
-
-
-
-
-
-
-
Change the
plus terminal
connection