STK433-730-E 查看數據表（PDF） - SANYO -> Panasonic

零件编号

产品描述 (功能)

生产厂家

STK433-730-E

2-channel class AB audio power IC, 30W+30W

SANYO -> Panasonic 

STK433-730-E

Recommended Values for Application Parts (for the test circuit)

Symbol

R01

R03

R11, 12

Recommen

ded Value

47Ω

-

4.7Ω

Description

Larger than

Recommended Value

Smaller than

Recommended Value

Ripple filtering resistors (Fusible resistors are desirable)

Decreased pass-

Increased pass-

(Used with C03 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.

Noise-absorbing resistors

-

-

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

3kΩ

Oscillation prevention

Likely to oscillate

C01, 02

C03

C05

C11, 12

100μF

200μF

0.01μF

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 to form a filter.)

A detection voltage appears during the protection operation. Adjust the time constant (when the detection pin is to be

used).

Oscillation prevention (Mylar capacitors are recommended.)

Likely to oscillate

C13, 14

12pF

Oscillation prevention

Likely to oscillate

C21, 22

C23, 24

C25, 26

C27, 28

470pF

2.2μF

10μF

Input filter capacitor

(Used with R21 and R22 to form a filter that suppresses high-

frequency noises.)

Input coupling capacitor (block DC current)

NF capacitor

(Changes the low cutoff frequency; fL=1/ (2π • C25 • R23)

2200pF

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. A1249-6/12

Share Link: