SANYO STK403-430

Ordering number : ENN7374
Thick-Film Hybrid IC
STK403-430
Six-Channel Class AB Audio Power Amplifier IC
20 W × 6 Channels
Overview
Package Dimensions
The STK403-400 series products are audio power
amplifier hybrid ICs that consist of optimally-designed
discrete component power amplifier circuits that have
been miniaturized using SANYO's unique insulated metal
substrate technology (IMST). The adoption of a newlydeveloped low thermal resistance substrate allows this
product to integrate six power amplifier channels in a
single compact package. The adoption of a standby circuit
in this device allows it to reduce impulse noise
significantly as compared to earlier Sanyo products, in
particular, the STK402-*00 series products.
unit: mm
4202-SIP28
[STK403-430]
Features
• Series of pin compatible power amplifiers ranging from
30 W/ch to 45 W/ch (10%/1 kHz) devices. The same
printed circuit board can be used depending on the
output power grade.
• Miniature packages
— 78.0 mm × 32.0 mm × 9.0 mm *
*: Not including the pins.
• Output load impedance: RL = 6 Ω
• Allowable load shorted time: 0.3 seconds
• Supports the use of standby and muting circuits.
SANYO: SIP28
Any and all SANYO products described or contained herein do not have specifications that can handle
applications that require extremely high levels of reliability, such as life-support systems, aircraft’s
control systems, or other applications whose failure can be reasonably expected to result in serious
physical and/or material damage. Consult with your SANYO representative nearest you before using
any SANYO products described or contained herein in such applications.
SANYO assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other
parameters) listed in products specifications of any and all SANYO products described or contained
herein.
SANYO Electric Co.,Ltd. Semiconductor Company
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
D2503TN (OT) No. 7374-1/8
STK403-430
Series Organization
These products are organized as a series based on their output capacity.
Type No.
Item
STK403-430
STK403-440
Output 1 (10%/1 kHz)
30 W × 6 ch
40 W × 6 ch
STK403-450
45 W × 6 ch
Output 2 (0.6%/20 Hz to 20 kHz)
20 W × 6 ch
25 W × 6 ch
30 W × 6 ch
Maximum supply voltage (No signal)
±36 V
±38 V
±40 V
Maximum supply voltage (6 Ω)
±34 V
±36 V
±38 V
Recommended supply voltage (6 Ω)
±23 V
±26 V
±28 V
78.0 mm × 32.0 mm × 9.0 mm
Package
Specifications
Maximum Ratings at Ta = 25°C
Parameter
Symbol
Conditions
Ratings
Unit
Maximum supply voltage (No signal)
VCC max(0)
±36
V
Maximum supply voltage
VCC max(1) RL ≥ 6 Ω
±34
V
Minimum operating supply voltage
Maximum operation flow-in current (pin 23)
VCC min
±10
V
IST OFF max
1.2
mA
θ j -c
Thermal resistance
Per power transistor
Junction temperature
Tj max
Operating IC substrate temperature
Tc max
Storage temperature
ts
°C/W
°C
125
°C
–30 to +125
°C
Both the Tj max and the Tc max conditions must be met.
Tstg
Allowable load shorted time *4
3.6
150
VCC = ±23.0 V, RL = 6 Ω, f = 50 Hz, PO = 20 W, 1ch drive
0.3
s
Operating Characteristics at Tc = 25°C, RL = 6 Ω (noninductive load), Rg = 600 Ω, VG = 30 dB
Parameter
Symbol
Conditions*1
VCC (V)
f (Hz)
PO (W)
Ratings
THD (%)
min
PO (1)
±23.0
20 to 20 k
0.6
PO (2)
±23.0
1k
10
THD (1)
±23.0
20 to 20 k
5.0
VG = 30 dB
THD (2)
±23.0
1k
5.0
VG = 30 dB
fL, fH
±23.0
1.0
+0 –3 dB
ri
±23.0
Output noise voltage *2
VNO
±28.0
Rg = 2.2 kΩ
Quiescent current
ICCO
±28.0
No loading
VN
±28.0
Output power *1
Total harmonic distortion *1
Frequency characteristics
Input impedance
Neutral voltage
Current flowing into pin 23
in standby mode *6
IST ON
±23.0
Current flowing into pin 23
in operating mode *6
IST OFF
±23.0
1k
18
typ
Unit
max
20
W
30
0.6
0.03
1.0
%
20 to 50 k
Hz
55
kΩ
1.0
mVrms
60
110
180
mA
–70
0
+70
mV
0
mA
1.2
mA
V23 = 5 V, current Limiting
resistance: 6.2 kΩ
0.4
Notes: 1. 1ch drive
2. Unless otherwise noted, use a constant-voltage supply for the power supply used during inspection.
3. Use the transformer power supply circuit shown in the figure below for allowable load shorted time measurement and output noise voltage
measurement.
4. The output noise voltage values shown are peak values read with a VTVM. However, an AC stabilized (50 Hz) power supply should be used to
minimize the influence of AC primary side flicker noise on the reading.
5. Design applications so that the minus pre-VCC line (pin 17) is the lowest potential applied to the IC at all times.
6. A limiting resistor that assures that the maximum operating current flowing into the standby pin (pin 23) does not exceed the maximum rating must
be included in application circuits. This IC operates when a voltage higher than VBE (about 0.6 V) is applied to the standby pin.
DBA30C
4700µF
+VCC
+
500Ω
+
500Ω
--VCC
4700µF
Designated Transformer Power Supply (RP-25 equivalent)
No. 7374-2/8
14
17
22
21
20
15
16
13
12
10
1
4
3
2
11
Pre Driver IC
(CH4)
Pre Driver IC
(CH1)
R20
R27
TR12
R26
R7
TR3
R21
R8
C4
C1
R2
R1
TR13
C15
C14
TR14
TR10
TR11
TR5
TR4
TR1
TR2
C12
C11
R28
R29
TR15
TR6
R23
R22
R9
R10
C5
Bias Circuit
C2
R4
R3
24
5
7
25
26
Pre Driver IC
(CH5 / CH6)
Pre Driver IC
(CH2 / CH3)
6
27
8
R11
R12
C6
C3
R6
R5
R30
R31
TR18
R24
TR9
R25
ITF02247
C16
TR16
TR17
SUB
TR8
TR7
C13
28
18
19
23
9
STK403-430
Internal Equivalent Circuit
No. 7374-3/8
1kΩ 2.2µF
+
Ch1
OUT
+
3pF
56kΩ
4
2
+
3pF
56kΩ
+
3pF
56kΩ
10
Ch3 Ch2
OUT OUT
9
+
11
10µF 1.8kΩ
100Ω
12
14
15
+
+VCC --VCC
+
13
16
Ch4 Ch5
OUT OUT
17
56kΩ
3pF
18
19
3pF
56kΩ
20
21
8
7
6
5
STK403-400 series
220pF
3
1
220pF
SUB
Ch3 Ch3 Ch2
Ch4 Ch5
SUB
Ch4
+V
--V
--V
+V
CC CC CC CC OUT OUT --PRE GND GND +PRE
NF OUT OUT
IN
+
22
24
+
Stand-by
Control
(*1)
23
Ch4 BIAS Ch5
NF (ST-BY) NF
10µF 1.8kΩ
+
27
26
25
3pF
56kΩ
28
Ch6 Ch6
NF OUT
Ch6
IN
Ch5
IN
Ch6
OUT
+
2.2µF 1kΩ
+
2.2µF 1kΩ
+
2.2µF 1kΩ
Ch4
IN
Ch5
IN
Ch6
IN
ITF02248
*1. Use a value for the limiting resistor that assures that the maximum operating current flowing into the standby pin (pin 23) does not exceed the maximum rating.
Ch3
IN
Ch2
IN
1kΩ 2.2µF
+
470pF
470pF
Ch1
IN
470pF
1kΩ 2.2µF
+
3µF
0.1µF
3kΩ
3kΩ
Ch3
IN
220pF
220pF
Ch2
IN
10µF 1.8kΩ
3kΩ
10µF 1.8kΩ
6.2kΩ
3kΩ
Ch2
NF
220pF
220pF
Ch1
NF
100µF
3kΩ
10µF 1.8kΩ
56kΩ
56kΩ
56kΩ
3kΩ
10µF 1.8kΩ
470pF
470pF
470pF
56kΩ
56kΩ
56kΩ
4.7Ω
4.7Ω
3µF
0.1µF
4.7Ω
4.7Ω
4.7Ω
0.1µF
470µF
3µF
4.7Ω
3µF
0.1µF
470µF
4.7Ω
4.7Ω
4.7Ω
0.1µF
3µF
4.7Ω
4.7Ω
0.1µF
3µF
4.7Ω
Ch1
Ch1
OUT +PRE IN
STK403-430
Sample Application Circuit
No. 7374-4/8
STK403-430
Thermal Design Example
The heat sink thermal resistance, θc-a, required to handle the total power dissipated within this hybrid IC is determined as
follows.
Condition 1: The IC substrate temperature Tc must not exceed 125°C.
Pd × θc – a + Ta < 125°C ... (1)
Ta: Guaranteed ambient temperature for the end product.
Condition 2: The junction temperature of each individual transistor must not exceed 150°C.
Pd × θc – a + Pd/N × θj – c + Ta < 150°C ... (2)
N: Number of power transistors
θj-c: Thermal resistance per power transistor
We take the power dissipation in the power transistors to be Pd evenly distributed across those N power transistors.
If we solve for θc-a in equations (1) and (2), we get the following inequalities.
θc – a < (125 – Ta)/Pd ... (1)’
θc – a < (150 – Ta)/Pd – θj-c/N ... (2)’
Values that satisfy both these inequalities at the same time are the required heat sink thermal resistance values.
Determining the following specifications allows us to determine the required heat sink thermal resistance from
inequalities (1)’ and (2)’.
• Supply voltage: VCC
• Load resistance: RL
• Guaranteed ambient temperature: Ta
Example:
Assume that the IC supply voltage, VCC, is ±23 V, RL is 6 Ω, and that the signal is a continuous sine wave. In this case,
from the Pd – PO characteristics, the maximum power will be 103 W for a signal with a frequency of 1 kHz.
For actual music signals, it is usual to use a Pd of 1/8 of POmax, which is the power estimated for continuous signals in
this manner. (Note that depending on the particular safety standard used, a value somewhat different from the value of
1/8 used here may be used.)
That is:
Pd = 65 W (when 1/8 POmax is 2.5 W)
The number, N, of power transistors in the hybrid IC's audio amplifier block is 12. Since the thermal resistance, θc-a, per
transistor is 3.6°C/W, the required heat sink thermal resistance, θc-a, for a guaranteed ambient temperature of 50°C will
be as follows.
From inequality (1)’: θc – a < (125 – 50)/65
< 1.15
From inequality (2)’: θc – a < (150 – 50)/65 – 3.6/12
< 1.23
Therefore, the thermal resistance that satisfies both these expressions at the same time is 1.15°C/W.
Note that this thermal design example assumes the use of a constant-voltage power supply, and is only provided as an
example for reference purposes. Thermal designs must be tested in an actual end product.
No. 7374-5/8
2.2kΩ
10kΩ
10kΩ
10kΩ
10kΩ
+
+
Ch1
OUT
2
3
+
4
+
5
6
Ch2
IN
7
Ch3
IN
STK403-400 series
+
8
10
Ch3 Ch2
OUT OUT
9
11
13
+
+VCC --VCC
+
+
12
14
16
Ch4 Ch5
OUT OUT
15
17
18
Mute
Control
Stand-by
Control
19
20
ST-BY
+5
+
21
SUB
Ch3 Ch3 Ch2
Ch4 Ch5
SUB
Ch4
NF OUT OUT +VCC --VCC --VCC +VCC OUT OUT --PRE GND GND +PRE
IN
*1. Use a value for the limiting resistor that assures that the maximum operating current
flowing into the standby pin (pin 23) does not exceed the maximum rating.
Mute Control
H : Single Mute
L : Normal
Ch3
IN
Ch2
IN
Ch1
IN
+
1
Ch2
NF
33µF
Ch1
NF
25
3kΩ
(*1)
PLAY
MUTE
+5
33kΩ
+
+
26
Ch6
IN
MUTE
+
27
Ch6
OUT
28
Ch6 Ch6
NF OUT
ST-BY
Stand-by
Control
H : Operation
L : Stand-by
24
23
22
Ch5
IN
Ch4 BIAS Ch5
NF (ST-BY) NF
6.2kΩ
2kΩ
Ch1
Ch1
OUT +PRE IN
+
+
+
Ch4
IN
Ch5
IN
Ch6
IN
ITF02249
Mute Control
H : Single Mute
L : Normal
2.2kΩ
10kΩ
10kΩ
10kΩ
10kΩ
STK403-430
Stand-by & Mute Sample Application Circuit
No. 7374-6/8
2
3
V : 200mV / 1div
T : 100ms / 1div
1
4
5
Ch2
NF
6
Ch2
IN
0.1V
0.16V
7
Ch3
IN
8
10
ITF02263
ON
(Operation
Mode)
OFF
(Stand-by
Mode)
9
11
12
14
15
16
17
19
20
22
(*1)
6.2kΩ
21
Current flowing in IST
18
24
+
3kΩ
26
Ch6
IN
33kΩ
25
Ch5
IN
27
ITF02250
Stand-by Control
H : Operation Mode (+5 V)
L : Stand-by Mode (0 V)
28
Ch6 Ch6
NF OUT
IST=(applied voltage–VBE×2) / R1
=(5--0.6×2) / 6.2kΩ
≈0.63(mA)
R1
23
Ch4 BIAS Ch5
NF (ST-BY) NF
• Applied voltage VST ... An internal transistor turns on when a voltage over 0.6 V is applied
and the IC transitions to operating mode.
• Current flowing into pin 23 IST ... Use a value for the limiting resistor that assures that the maximum
operating current flowing into this pin due to the control voltage applied
by the microcontroller or other circuit does not exceed the maximum rating.
13
STK403-400 series
SUB
Ch3 Ch3 Ch2
Ch4 Ch5
SUB
Ch4
NF OUT OUT +VCC --VCC --VCC +VCC OUT OUT --PRE GND GND +PRE
IN
33µF
/ 10V
Ch1
NF
2kΩ
Ch1
Ch1
OUT +PRE IN
STK403-430
Standby Mode Control
• Impulse noise that occurs at power on and power off can be reduced significantly by using a standby circuit.
• End product design is made easier by using a limiting resistor *1 to match the control voltage provided by the microcontroller or other control circuit.
• Standby control can be applied by controlling the current (IST) flowing into the standby pin (pin 23).
No. 7374-7/8
STK403-430
THD — PO
3
2
1.0
7
5
Total device power dissipation, Pd — W
10
7
5
f=20kHz
3
2
0.1
7
5
f=1kHz
3
2
0.1
2
3
5
7 1.0
2
3
5
7 10
2
Output power, PO — W
60
100
80
60
40
20
40
.6%
10
D=
TH
D
TH
30
%
.6
=0
0
D=
H
,T
Hz
k
20
3
f=
20
5
7 1.0
2
3
5
7 10
2
Output power, PO — W
35
40
2
ITF02251
%
50
VCC=±23V
RL=6Ω
f=1kHz
VG=30dB
Rg=600Ω
Tc=25°C
6ch Drive
(same output rating)
0
0.1
5
RL=6Ω
f=1kHz
VG=30dB
Rg=600Ω
Tc=25°C
6ch Drive
70
Output power, PO — W
3
PO — VCC
80
Pd — PO
120
VCC=±23V
RL=6Ω
VG=30dB
Rg=600Ω
Tc=25°C
6ch Drive
Output power, PO — W
Total harmonic distortion, THD — %
2
3
5
ITF02252
PO — f
VCC=±23V, RL=6Ω
VG=30dB, Rg=600Ω
Tc=25°C
6ch drive
THD=10%
30
25
THD=0.6%
20
10
0
10
14
18
22
26
30
Supply voltage, ±VCC — V
34
38
42
ITF02253
15
10
2
3
5 7 100
2
3
5 7 1k
Frequency, f — Hz
2
3
5 7 10k
2 3
ITF02254
Specifications of any and all SANYO 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.
SANYO Electric Co., Ltd. strives to supply high-quality high-reliability products. However, any and all
semiconductor products fail with some probability. It is possible that these probabilistic failures could
give rise to accidents or events that could endanger human lives, that could give rise to smoke or fire,
or that could cause damage to other property. When designing equipment, adopt safety measures so
that these kinds of accidents or events cannot occur. Such measures include but are not limited to protective
circuits and error prevention circuits for safe design, redundant design, and structural design.
In the event that any or all SANYO products (including technical data, services) described or contained
herein are controlled under any of applicable local export control laws and regulations, such products must
not be exported without obtaining the export license from the authorities concerned in accordance with the
above law.
No part of this publication may be reproduced or transmitted in any form or by any means, electronic or
mechanical, including photocopying and recording, or any information storage or retrieval system,
or otherwise, without the prior written permission of SANYO Electric Co., Ltd.
Any and all information described or contained herein are subject to change without notice due to
product/technology improvement, etc. When designing equipment, refer to the “Delivery Specification”
for the SANYO product that you intend to use.
Information (including circuit diagrams and circuit parameters) herein is for example only; it is not
guaranteed for volume production. SANYO believes information herein is accurate and reliable, but
no guarantees are made or implied regarding its use or any infringements of intellectual property rights
or other rights of third parties.
This catalog provides information as of December, 2003. Specifications and information herein are
subject to change without notice.
PS No. 7374-8/8