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PDF STK433-760-E Data sheet ( Hoja de datos )
| Número de pieza | STK433-760-E | |
| Descripción | 2-channel class AB audio power IC 50W+50W | |
| Fabricantes | Sanyo Semicon Device | |
| Logotipo |  |
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Ordering number : EN*A1476
www.DataSheet4U.com
STK433-760-E
Thick-Film Hybrid IC
2-channel class AB audio power IC,
50W+50W
Overview
The STK433-760-E is a hybrid IC designed to be used in 50W × 50W (2-channel) class AB audio power amplifiers.
Applications
• Audio power amplifiers.
Features
• Miniature package (47.0mm × 25.6mm × 9.0mm)
• Output load impedance: RL = 6Ω to 4Ω supported
• Built-in stand-by circuit, output limiting circuit for substrate overheating, and load short-circuit protection
circuit constituted by monolithic ICs
Series Models
Output 1 (10%/1kHz)
Output 2 (0.4%/20Hz to 20kHz)
Max. rated VCC (quiescent)
Max. rated VCC (6Ω)
Max. rated VCC (4Ω)
Recommended operating VCC (4Ω)
Dimensions (excluding pin height)
STK433-730-E
30W×2 channels
15W×2 channels
±30V
±28V
±25V
±18V
47.0mm×25.6mm×9.0mm
STK433-760-E
50W×2 channels
35W×2 channels
±50V
±40V
±33V
±23V
Any and all SANYO Semiconductor Co.,Ltd. products described or contained herein are, with regard to
"standard application", intended for the use as general electronics equipment (home appliances, AV equipment,
communication device, office equipment, industrial equipment etc.). The products mentioned herein shall not be
intended for use for any "special application" (medical equipment whose purpose is to sustain life, aerospace
instrument, nuclear control device, burning appliances, transportation machine, traffic signal system, safety
equipment etc.) that shall require extremely high level of reliability and can directly threaten human lives in case
of failure or malfunction of the product or may cause harm to human bodies, nor shall they grant any guarantee
thereof. If you should intend to use our products for applications outside the standard applications of our
customer who is considering such use and/or outside the scope of our intended standard applications, please
consult with us prior to the intended use. If there is no consultation or inquiry before the intended use, our
customer shall be solely responsible for the use.
Specifications of any and all SANYO Semiconductor Co.,Ltd. products described or contained herein stipulate
the performance, characteristics, and functions of the described products in the independent state, and are not
guarantees of the performance, characteristics, and functions of the described products as mounted in the
customer's products or equipment. To verify symptoms and states that cannot be evaluated in an independent
device, the customer should always evaluate and test devices mounted in the customer's products or
equipment.
52709HKIM No. A1476-1/12
1 page  
Internal Equivalent Circuit
+VCC 3
+Pre VCC 8
IN ch1 11 +
NF ch1 12 -
Pre Driver
CH1
STK433-760-E
www.DataSheet4U.com
Pre Driver
CH2
+ 15 IN ch2
- 14 NF ch2
-Pre VCC 1
- VCC 2
Stand-by Circuit
SUB
ch1- 5 4 6 7 ch2-
9 10 13
ch1+ ch2+
GND Monitor St-By
Application Circuit Example
+VCC
GND
-VCC
STK433-760-E
GND/
-Pre -VCC +VCC Ch1+ Ch1- Ch2+ Ch2- +Pre SUB Monitor IN/1 NF/1 St-by NF/2 IN/2
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
R3
R02
C04
C01
(C5)
R01
(R4) C27 R27
R28 C28
C03
R16
C02
R15
R11
R13
C14
L12
L11
R12
R14
R23
C13
C25
R25
R24
C26
C23
C21
C11 C12
R26 C22
R21
GND Ch1 OUT Ch2 OUT GND
C24 R22
Stand-by Control
Detection Terminal
Ch1 IN
GND
Ch2 IN
No. A1476-5/12
5 Page 
STK433-760-E
STK433-760-E Stand-by Control & Mute Control Application
STK433-760-E
www.DataSheet4U.com
Ch1
-PRE -VCC +VCC OUT
Ch1
OUT
Ch2 Ch2
SUB/
Ch1
OUT OUT +PRE GND MONITOR IN
VST
Ch1 Ch2
NF ST-BY NF
Ch2
IN
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
TR1
R31 Stand-by Control(ex)
H: Operation Mode(+5V)
R03 L: Stand-by Mode(0V)
C32 R33
+VCC
GND
-VCC
(0.1μF)
(10kΩ)
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 (*2) 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)
ΔVBE
33μF (min)
(*3)
2kΩ
(*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
NF
Ch2
NF
4.3kΩ (*2)
Ch2
IN
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 2.5V, 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. A1476-11/12
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