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

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STK433-730-E

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

SANYO -> Panasonic 

STK433-730-E

STK433-700series Stand-by Control & Mute Control Application

STK433-700series

VST

Ch1 Ch1 Ch2 Ch2

SUB/

Ch1 Ch1

Ch2 Ch2

-PRE -VCC +VCC OUT OUT OUT OUT +PRE GND MONITOR IN NF ST-BY NF IN

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

1kΩ

33kΩ

33μF

Stand-by Control(ex)

H: Operation Mode(+5V)

L: Stand-by Mode(0V)

2kΩ

+VCC

GND

-VCC

MONITOR

Ch2 OUT

GND

GND

Ch1 OUT

Stand-by

Control

Mute

Control

Ch2 IN

10kΩ

GND

10kΩ

10kΩ

Ch1 IN

2.2kΩ

Mute Control

H: Single Mute

L: Normal

+5V

+5V

MUTE

ST-BY

PLAY

MUTE ST-BY

[The example of use STK433-*00series Stand-by control circuit]

Features

• By using the recommended stand-by control application, the pop noise level when the power is turned on/off can be

significantly reduced.

• By adjusting the limiting resistance (*1) in accordance with the voltages of the microcontroller and other components

used, it is possible to perform stand-by control, facilitating the finished product design effort.

(ex) STK433-*00series test circuit. When impressed by Stand-by control control [+5V].

Stand-by control circuit part

H: Operation mode (+5V)

VST

33kΩ

L: Stand-by mode (0V)

1kΩ (*1)

33μF (min) 2kΩ

ΔVBE (*3)

(*4)

12

3

-PRE -VCC +VCC

4

Ch1

OUT

5

Ch1

OUT

6

Ch2

OUT

7 8 9 10 11

Ch2 +PRE SUB/ MONITOR Ch1

OUT

GND

IN

12 13 14 15

Ch1 ST-BY

Ch2 Ch2

NF

NF IN

4.3kΩ (*2)

ΔVBE

STK433-*00series

Stand-by Circuit

in Pre Driver IC

ex) VST=(Stand-by Control-VBE*2)× (*2)/((*1)+(*2))+VBE

=(5V-0.6V*2)×4.3kΩ/(4.3kΩ+1kΩ)+0.6V

≈3.68(V)

Operation Explanation

1) About VST (#13pin Stand-by Threshold)

<1> Operation Mode

When pin 13 reference voltage VST is equal to or greater than 2.5 V, the stand-by circuit is set off, and the

amplifier is set to the operation mode.

<2> Stand-by Mode

When pin 13 reference voltage VST is equal to or less than 0.6V, the stand-by circuit is set off, and the amplifier is

set to the stand-by mode.

(*3) The pop noise that occurs when the power is turned ON is reduced by providing a time constant using a capacitor

during operation.

(*4) The pop noise level is reduced by discharging the capacitor with a resistor in the stand-by mode.

No. A1249-11/12

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