STK4067 [SANYO]
High-Output Power Amplifier for Car Stereos (Po = 60 W typ.); 高输出功率放大器汽车音响（ PO = 60W的典型值）。
| 型号： | STK4067 |
| 厂家： | 
SANYO SEMICON DEVICE |
| 描述： | High-Output Power Amplifier for Car Stereos (Po = 60 W typ.) |
| 文件： | 总8页 (文件大小：584K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Ordering number : EN4376A
Thick Film Hybrid IC
STK4067
High-Output Power Amplifier
for Car Stereos (Po = 60 W typ.)
• Low operating power supply voltage range (9 V to 16 V)
• Built-in muting circuit
Overview
Higher output amplification of the car stereo has been
generally dependent on boosting voltage of the power
supply. The STK4067 supports low-load impedance and
is designed for up to 60 W of high output without the
need for a power supply voltage booster circuit.
Short attack time with muting quickly enabled
• Built-in protection circuits
Built-in thermal shutdown and overvoltage protector
Package Dimensions
unit : mm
Applications
• Power amplifier for car stereos
• Home karaoke systems
• Radio-cassette players
4131
[STK4067]
Features
• Superior heat sink capacity using IMST (insulated
metal substrate technology)
• Designed for high output while supporting low-load
impedance
① R = 1Ω 60 W typ. (EIAJ)
100 W (max.)
70 W (max.)
40 W (max.)
L
➁ R = 2Ω 40 W typ. (EIAJ)
L
③ R = 4Ω 23 W typ. (EIAJ)
L
• Supports sufficient amplifier configurations for high
power output
• Low-load impedance driver
Supports independent or parallel speaker connections
for low-load impedance driving.
• Low distortion
THD = 0.025% typ. (V
Po = 10 W, f = 1 kHz)
= 13.2 V, R = 2Ω,
L
CC
Compared with a monolithic IC, with a base
frequency of 100 Hz, the following is established:
secondary high frequency harmonics switches to
–58 dB, with third-order switching to –20 dB,
fourth-order to –45 dB, and fifth-order to –18 dB.
• High temperature operation
Provides guaranteed high output to the passenger
compartments protected interior even when operating
in excessive heat
• Compact heat sink mounting
Supports compact total-set packaging, occupying 1/3
the heat sink area compared of monolithic ICs, and
equipped with an 85°C temperature range and 110°C
guaranteed case temperature rating
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN
D3096HA (OT)/31293YO 5-2987 No. 4376-1/8
STK4067
Specifications
Maximum Ratings at Ta=25°C
Parameter
Symbol
Conditions
Ratings
Unit
V
V
V
max (1) No signal (with circuit cut off) 30s
30
18
CC
Maximum supply voltage
max (2) With signal (f = 100 kHZ, Vin = 1 Vrms, t = 100 ms)
V
CC
I
Output current
max
Tj
15
A
O
Junction temperature
Thermal resistance
150
1.6
110
°C
°C/W
°C
°C
s
θj-c
Tc
Per power transistor
Operating substrate temperature
Storage temperature
Tstg
ts
–40 to +125
2
Available time for load shorted
V
= 13.2 V, R = 2 Ω, f = 50 Hz, P = 25 W
CC L O
Recommended Operating Conditions at Ta=25°C
Parameter
Recommended supply voltage
Load resistance
Symbol
Conditions
Ratings
13.2
2
Unit
V
V
CC
R
L
Ω
Operating Characteristics at Ta = 25°C, V = 13.2 V, R = 2 Ω, Rg = 600 Ω, VG = 46 dB
CC
L
Parameter
Quiescent current
Symbol
Conditions
min
typ
70
60
max
Unit
mA
W
I
Rg = 10 kΩ
140
CCO
P
P
(1)
(2)
THD = 10%, f = 1 kHz, R = 1 Ω
50
O
O
L
Output power
THD = 10%, f = 1 kHz, R = 2 Ω
40
W
L
THD (1)
THD (2)
VG
P
P
P
= 10 W, f =1kHz
= 1 W, f = 20 to 20 kHz
= 1 W, f = 1 kHz
+0
–3
= 1 W, f = 1 kHz
0.025
0.1
0.4
%
O
O
O
Total harmonic distortion
%
Voltage gain
43.8
46.0
48.2
dB
Frequency response
f , f
L
P
=1 W,
dB
20 to 30k
Hz
L
O
Input resistance
r
i
P
20
30
0.6
0
kΩ
mVrms
mV
O
Output noise voltage
Output offset voltage
Muting suppression level
Ripple rejection
V
Rg = 10 kΩ, BPF
Rg = 10 kΩ
1.2
NO
∆VN
–200
+200
ATT
V
f
= +5 V
∞
dB
M
SVRR
= 100 Hz, Rg = 0 Ω, V = 0 dBm
–47
dB
R
R
Equivalent Circuit
No. 4376-2/8
STK4067
STK4067 Design Data
(1) The Protection Circuits
a) Overvoltage Protector
Since the STK4067 is designed for car stereo applications, V
max for operating mode is set to 18 V.
CC
Exceeding the V maximum level activates the overvoltage protector and the circuit switches to an off-state and
CC
delivers no output. The overvoltage protection circuit is set for a functional range from 18 to 28 V; 100%
operation at 28 V. For this reason, you should be careful not to exceed the 18 V limit in quiescent mode and keep
in mind AC line regulations when setting using a transformer power supply for designs such as home stereo
systems. Exceeding 18 V activates the overvoltage protector and results in the generation of abnormal sounds.
b) Thermal Shutdown
The thermal shutdown protection circuit is designed to first detect abnormal temperature rises which occur during
abnormal operation (such as load shorts) and then prevent damage to the IC by limiting the input signal; thereby
preventing a further rise in the temperature. The thermal shutdown protector is set to activate at substrate
temperature of 135°C with a complete shutdown by switching to an off-state if temperatures rise to 175°C. Under
normal application, the IC is equipped with a heat sink and the temperature never reaches a level resulting in a
complete off-state switch and saturation occurs at a specific temperature. For example, when a short occurs with
an IC mounted 4.5°C/W heat sink, saturation is achieved at approximately 160°C. At this point, Tj exceeds its
maximum rating of 170°C. As previously mentioned, this circuit is designed to protect the IC from damage
sustained in a short period of time and you should note that the protection circuit will not protect the IC if
abnormal temperature rises occur over a long period of time.
(2) Precautions
a) Excessive Input
If a 1 V or greater (f = 1 kHz.rms) overinput is applied to the input pin, the DC balance of the input channel for
the input monolithic amplifier is disrupted and output is cut off. In addition, DC voltage is generated on the
output pins and causes damage to the speakers. Proper caution should be displayed in preventing input above this
voltage.
b) Parasitic Oscillation
The STK4067 performs phase compensation using 2.2Ω and 0.47µF between V and the bootstrap pins. Under
CC
such conditions, the power supply line must be in a close proximity to the bootstrap pins for the inverting and
non-inverting amplifiers. If the power line is too long, parasitic oscillation is likely to occur at low temperatures.
If such a problem arises, add a 0.1µF rated condenser between the ground and the head of the power supply line
in order to lower the impedance.
c) Power Supply Voltage Inverse Application
The STK4067 is not equipped with a built-in power supply voltage inversion protection circuit. If the possibility
exists, one should be externally connected.
d) Power Off
Do not connect pin 1 of the V pin directly to the ground or else the IC will be damaged. When connecting pin
CC
1, install a resistor rated for 100Ω or greater in series with pin 1, or you may place a diode between pin 10 and pin
1.
(3) Application Circuits
a) The under frequency band may be magnified, for applications using a booster amplifier or woofer driver
amplifier, the bootstrap condensers (C3 and C4) can be changed from 220µF to 470µF. Refer to P -f graphs.
O
b) L1 = 3 µH and R3 = 4.7Ω are for anti-oscillation applications against capacity loads. We recommend the use of
this coil and resistor with the most compatible amplifier sets connected to general use speakers. This coil is not
necessary when the load capacity is low using a chosen speaker connected to a radio-cassette player or active
speaker.
No. 4376-3/8
STK4067
Example PCB
Sample Application Circuit
No. 4376-4/8
STK4067
Sample STK4067 Heat Sink Design
The radiator thermal resistance θc-a required for total substrate power dissipation Pd in the STK4067 is determined as:
Condition 1: IC substrate temperature Tc not to exceed 110°C.
Pd x θc-a+Ta <110°C ······························· (1)
where Ta is set assured ambient temperature.
Condition 2: Power transistor junction temperature Tj not to exceed 150°C.
Pd x θc-a+Pd/N x θj-c+Ta<150°C·············(2)
where N is the number of power transistors and θj-c is the thermal resistance per power transistor chip
.
However, power transistor power consumption is Pd equally divided by N units.
Expressions (1) and (2) can be rewritten based on θc-a to yield:
θc-a<(110–Ta)/Pd······································(1)'
θc-a<(150–Ta)/Pd–θj-c/N··························(2)'
The required radiator thermal resistance will satisfy both of these expressions.
From expressions (1)' and (2)', the required radiator thermal resistance can be determined once the following
specifications are known:
•
•
•
Supply voltage
Load resistance
V
CC
R
L
Assured ambient temperature Ta
The total substrate power consumption when STK4067 V is ±13.2 V and R is 2 Ω, for a continuous sine wave
CC
L
signal, is a maximum of 19.3W (Fig. 2).
The STK4067 has four power transistors, so the thermal resistance per transistor θj-c is 1.6°C / W. With an assured
ambient temperature Ta of 50°C, the required radiator thermal resistance θc-a would be:
From expression (1)' θc-a <(110–50)/19.3
<3.1
From expression (2)' θc-a <(150–50)/19.3–1.6/4
<4.78
To satisfy both, 3.1°C/W is the required radiator thermal resistance.
Figure 1 illustrates Pd - P when the V of STK4067 is 13.2V and R is functioning at 1Ω.
O
CC
L
Pd max= 34.8W
From expression (1)' θc-a <(110–50)/34.8
<1.72
From expression (2)' θc-a <(150-50)/34.8–1.6/4
<2.47
To satisfy both, 1.72°C/W is the required radiator thermal resistance.
Similar to figure 3 when the STK4067’s V is 13.2 V and R is 4Ω.
CC
L
Pd max= 12W
From expression (1)' θc-a <(110–50)/12
<5
From expression (2)' θc-a <(150-50)/12–1.6/4
<7.93
To satisfy both, 5°C / W is the required radiator thermal resistance. This design example is based on a fixed voltage
supply, and will require verification within your specific set environment.
No. 4376-5/8
STK4067
No. 4376-6/8
STK4067
No. 4376-7/8
STK4067
■ No products described or contained herein are intended for use in surgical implants, life-support systems, aerospace
equipment, nuclear power control systems, vehicles, disaster/crime-prevention equipment and the like, the failure of
which may directly or indirectly cause injury, death or property loss.
■ Anyone purchasing any products described or contained herein for an above-mentioned use shall:
➀ Accept full responsibility and indemnify and defend SANYO ELECTRIC CO., LTD., its affiliates, subsidiaries and
distributors and all their officers and employees, jointly and severally, against any and all claims and litigation and all
damages, cost and expenses associated with such use:
➁ Not impose any responsibility for any fault or negligence which may be cited in any such claim or litigation on
SANYO ELECTRIC CO., LTD., its affiliates, subsidiaries and distributors or any of their officers and employees
jointly or severally.
■ 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, 1996. Specifications and information herein are subject to
change without notice.
No. 4376-8/8
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