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.
Thick Film Hybrid IC
2ch AF Power Amplifier (Split Power Supply)
(50W + 50W min, THD = 0.08%)
Ordering number:ENN*5385
STK401-290
SANYO Electric Co.,Ltd. Semiconductor Company
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
Preliminary
Overview
The STK401-290 is a 2-channel audio power amplifier IC
that supports 6/3Ω output load impedances. It is fully pin
compatible with the 3-channel output devices (STK400×00 series) and 2-channel output devices (STK401-×00
series). In addition, it supports 6/3Ω output load impedance.
Features
• Pin compatible with the 3-channel output devices
(STK400-×00 series) and 2-channel output devices
(STK401-×00 series)
• Output load impedance RL=6/3Ω supported
• Pin configuration grouped into individual blocks of
inputs, outputs and supply lines to minimize the
adverse effects of pattern layout on operating characteristics.
• Few external components
Package Dimensions
unit:mm
4134
[STK401-290]
64.0
55.6
3.6
(8.75)
1
2.54
15×2.54=38.1
16
0.5
18.7
36.5
SANYO : SIP16
23.5
4.0
8.5
2.9
0.4
5.5
93099TH (KT)/32596HA (ID) No.5385–1/7
STK401-290
Specifications
Maximum Ratings at Ta = 25˚C
retemaraPlobmySsnoitidnoCsgnitaRtinU
egatlovylppusmumixaMV
ecnatsiserlamrehT
erutarepmetnoitcnuJjT 051
erutarepmetetartsbusgnitarepOcT 521
erutarepmetegarotSgtsT 521+ot03–
tiucric-trohsdaolrofemitelbaliavAt
Operating Characteristics at Ta = 25˚C, RL=6Ω (noninductive load), Rg=600Ω, VG=40dB
retemaraPlobmySsnoitidnoC
rewoptuptuO
noitrotsidcinomrahlatoT
esnopserycneuqerFf
ecnadepmitupnIr
egatlovesiontuptuOV
tnerructnecseiuQI
egatlovlartueNV
Note.
All tests are measured using a constant-voltage supply unless otherwise specified.
Available time for load short-circuit and output noise voltage are measured using the transformer supply specified below.
The output noise voltage is the peak value of an a verage-reading meter with an rms value scale (VTVM). A regulated AC
supply (50Hz) should be used to eliminate the effects of AC primary line flicker noise.
xam 74±V
CC
θ c-j
V
s
PO1
PO2
Lf,H
V
V
RL3= Ω
V
1DHT
POW0.1=
2DHTV
V
V
i
V
ON
V
OCC
V
N
CC
CC
CC
CC
CC
CC
CC
CC
CC
CC
rotsisnartrewopreP 7.1
R,V23±=
6= Ω P,zH05=f,
L
%80.0=DHT
P,zHk1=f,V23±=
O
+0
P,V23±=
O
V93±=0206001Am
V93±=07– 007+Vm
dB
,W0.1=k05ot02zH
–3
P,zHk1=f,V23±=
O
k01=gR,V93±= Ω 2.1smrVm
W05=1s
O
sgnitaR
nimpytxam
,zHk02otzH02=f,V23±=
,%2.0=DHT,zHk1=f,V62±=
,zHk02otzH02=f,V23±=
W0.5=700.0%
W0.1=55kΩ
0555W
0555W
80.0%
˚C/W
˚C
˚C
˚C
tinU
Specified Transformer Supply (MG-200 or Equivalent)
No.5385–2/7
Equivalent Circuit
STK401-290
Sample Application Circuit
No.5385–3/7
STK401-290
Series Configuration
These devices form a series of pin-compatible devices with different number of output channels, output ratings and total
harmonic distortion. Some of these devices are under development. Contact your Sanyo sales representative if you require more detailed information.
seires002-004KTS,000-004KTS
)gnitartuptuoemas,lennahc-3(
DHT
.oNepyT
]%[
010-004KTS
020-004KTS022-004KTSW51 ×3020-104KTS022-104KTSW51 ×2- 0.92±0.02±0.61±
030-004KTS032-004KTSW02 ×3030-104KTS032-104KTSW02 ×2- 0.43±0.32±0.91±
040-004KTS042-004KTSW52 ×3040-104KTS042-104KTSW52 ×2- 0.63±0.52±0.12±
050-004KTS052-004KTSW03 ×3050-104KTS052-104KTSW03 ×2- 0.93±0.62±0.22±
060-004KTS062-004KTSW53 ×3060-104KTS062-104KTSW53 ×2- 0.14±0.82±0.32±
070-004KTS072-004KTSW04 ×3070-104KTS072-104KTSW04 ×2- 0.44±0.03±0.42±
4.0
080-004KTS082-004KTSW54 ×3080-104KTS082-104KTSW54 ×2- 0.54±0.13±0.52±
090-004KTS092-004KTSW05 ×3090-104KTS092-104KTSW05 ×2- 0.74±0.23±0.62±
001-004KTS003-004KTSW06 ×3001-104KTS003-104KTSW06 ×2- 0.15±0.53±0.72±
011-004KTS013-004KTSW07 ×3011-104KTS013-104KTSW07 ×20.65±-0.83±-
DHT
.oNepyT
]%[
012-004KTS
80.0
detaR
tuptuo
W01 ×3010-104KTS
DHT
.oNepyT
]%[
4.0
021-104KTS023-104KTSW08 ×20.16±-0.24±031-104KTS033-104KTSW001 ×20.56±-0.54±041-104KTS043-104KTSW021 ×20.47±-0.15±-
)lennahc-2(
.oNepyT
seires002-104KTS,000-104KTS
DHT
]%[
012-104KTS
80.0
detaR
V
tuptuo
W01 ×2- 0.62±5.71±0.41±
1xamVCC2xamVCC1VCC2
CC
1
]V[egatlovylppuS
seires006-004KTS,004-004KTS
)sgnitartuptuotnereffid,lennahc-3(
DHT
.oNepyT
]%[
054-004KTS
064-004KTS066-004KTS
074-004KTS076-004KTS
084-004KTS086-004KTS
4.0
094-004KTS096-004KTS
005-004KTS007-004KTS
015-004KTS017-004KTS
025-004KTS027-004KTS
035-004KTS037-004KTS
DHT
.oNepyT
]%[
056-004KTS
80.0
detaR
tuptuo
hcCW03- 0.93±0.62±0.22±
hcR,hcLW51- 0.92±0.02±0.61±
hcCW53- 0.14±0.82±0.32±
hcR,hcLW51- 0.92±0.02±0.61±
hcCW04- 0.44±0.03±0.42±
hcR,hcLW02- 0.43±0.32±0.91±
hcCW54- 0.54±0.13±0.52±
hcR,hcLW02- 0.43±0.32±0.91±
hcCW05- 0.74±0.23±0.62±
hcR,hcLW52- 0.63±0.52±0.12±
hcCW06- 0.15±0.53±0.72±
hcR,hcLW03- 0.93±0.62±0.22±
hcCW070.65±-0.83±-
hcR,hcLW53- 0.14±0.82±0.32±
hcCW080.16±-0.24±-
hcR,hcLW04- 0.44±0.03±0.42±
hcCW0010.56±-0.54±-
hcR,hcLW05- 0.74±0.23±0.62±
V
1xamVCC2xamVCC1VCC2
CC
1. VCC max1 (RL=6Ω), VCC max2 (RL=3 to 6Ω), VCC1 (RL=6Ω), VCC2 (RL=3Ω)
1
]V[egatlovylppuS
No.5385–4/7
STK401-290
Heatsink Design Considerations
The heatsink thermal resistance, θc-a, required to dissipate
the STK401-290 device total power dissipation, Pd, is determined as follows :
The total device power dissipation when STK401-290
V
=±32V and RL=6Ω, for a continuous sine wave sig-
CC
nal, is a maximum of 71W, as shown in the Pd–P
graphs.
O
Condition 1: IC substrate temperature not to exceed 125°C.
Pd×θc-a+Ta<125°C ............................................(1)
Where Ta is the guaranteed maximum ambient temperature.
Condition 2: Power transistor junction temperature, Tj, not
to exceed 150°C.
Pd×θc-a+Pd/N×θj-c+Ta<150°C ......................... (2)
where N is the number of power transistors and θj-c is the
power transistor thermal resistance per transistor . Note that
the power dissipated per transistor is the total, Pd, divided
evenly among the N power transistors.
Expressions (1) and (2) can be rewritten making θc-a the
subject.
θc-a< (125–Ta)/Pd............................................ (1)’
θc-a< (150–Ta)/Pd–θj-c/N................................ (2)’
The heatsink required must have a thermal resistance that
simultaneously satisfies both expressions.
The heatsink thermal resistance can be determined from
(1)’ and (2)’ once the following parameters have been de-
fined.
When estimating the power dissipation for an actual audio
signal input, the rule of thumb is to select Pd corresponding to (1/10) × P
max (within safe limits) for a continuous
O
sine wave input. For example,
Pd=44W [for (1/10) × P
max=5W]
O
The STK401-290 has 4 power transistors, and the thermal
resistance per transistor, θj-c, is 1.7°C/W. If the guaranteed maximum ambient temperature, Ta, is 50°C, then the
required heatsink thermal resistance, θc-a, is :
From expression (1)’ : θc-a < (125–50)/44
< 1.70
From expression (2)’ : θc-a < (150–50)/44–1.7/4
< 1.84
Therefore, to satisfy both expressions, the required heatsink
must have a thermal resistance less than 1.70°C/W.
Similarly, when STK401-290 V
Pd=51.2W [for (1/10) × P
=±26V and RL=3Ω,
CC
max=5W]
O
From expression (1)’ : θc-a < (125–50)/51.2
< 1.46
From expression (2)’ : θc-a < (150–50)/51.2–1.7/4
< 1.52
• Supply voltage : V
• Load resistance : R
CC
L
• Guaranteed maximum ambient temperature : Ta
Therefore, to satisfy both expressions, the required heatsink
must have a thermal resistance less than 1.46°C/W.
This heatsink design example is based on a constant-voltage supply, and should be verified within your specific set
environment.
No.5385–5/7
STK401-290
No.5385–6/7
STK401-290
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 September, 1999. Specifications and information herein are
subject to change without notice.
PS No.5385–7/7
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