概述
规格参数
数据手册STK4432 概述
AF Power Amplifier (25W + 25W min, THD = 1.0%) AF功率放大器（ 25W + 25W分钟， THD = 1.0 ％ ） 音频/视频放大器
STK4432 规格参数
| 是否Rohs认证： | 不符合 | 生命周期： | Obsolete |
| 包装说明： | , SIP15,.1 | Reach Compliance Code： | unknown |
| ECCN代码： | EAR99 | HTS代码： | 8542.33.00.01 |
| 风险等级： | 5.91 | Is Samacsys： | N |
| 标称带宽： | 100 kHz | 商用集成电路类型： | AUDIO AMPLIFIER |
| 增益： | 40 dB | 谐波失真： | 1% |
| JESD-30 代码： | R-PSFM-T15 | JESD-609代码： | e0 |
| 信道数量： | 2 | 功能数量： | 1 |
| 端子数量： | 15 | 标称输出功率： | 25 W |
| 封装主体材料： | PLASTIC/EPOXY | 封装等效代码： | SIP15,.1 |
| 封装形状： | RECTANGULAR | 封装形式： | FLANGE MOUNT |
| 峰值回流温度（摄氏度）： | NOT SPECIFIED | 认证状态： | Not Qualified |
| 子类别： | Audio/Video Amplifiers | 最大压摆率： | 120 mA |
| 最大供电电压 (Vsup)： | 49 V | 最小供电电压 (Vsup)： | 49 V |
| 表面贴装： | NO | 技术： | BIPOLAR |
| 端子面层： | Tin/Lead (Sn/Pb) | 端子形式： | THROUGH-HOLE |
| 端子节距： | 2.54 mm | 端子位置： | SINGLE |
| 处于峰值回流温度下的最长时间： | NOT SPECIFIED | Base Number Matches： | 1 |
STK4432 数据手册
通过下载STK4432数据手册来全面了解它。这个PDF文档包含了所有必要的细节，如产品概述、功能特性、引脚定义、引脚排列图等信息。
PDF下载Ordering number: EN2885A
Thick Film Hybrid IC
STK4432
AF Power Amplifier
(25W + 25W min,THD = 1.0%)
Features
Package Dimensions
• Small and slim package with 31 mm height
• Pin compatible with STK430 series heretofore in use
• Greatly reduced heat sink due to case temperature
125°C guaranteed
unit: mm
4033
[STK4432]
• Excellent cost performance
Specifications
Maximum Ratings at Ta = 25°C
Parameter
Maximum supply voltage
Symbol
max
Conditions
Ratings
70
Unit
V
V
CC
Operating substrate temperature
Storage temperature
Tc
Tstg
125
°
°
C
C
−
30 to +125
Available time for load short-circuit
t
V
= 49V, R = 8
Ω, f = 50Hz, Po = 25W
2
s
s
CC
L
Recommended Operating Conditions at Ta = 25°C
Parameter
Recommended operating voltage
Load resistance
Symbol
Conditions
Ratings
Unit
V
V
49
8
CC
R
Ω
L
Operating Characteristics at Ta = 25°C, V = 49V, R = 8Ω, Rg = 600Ω, VG = 40dB
CC
L
Parameter
Quiescent current
Symbol
Icco
Conditions
min
20
typ
60
max
Unit
mA
W
V
= 58V
120
CC
Po (1)
THD = 1.0%, f = 1kHz
25
Output power
THD = 1.0%,
f = 30Hz to 20kHz
Po (2)
THD
13
W
Total harmonic distortion
Frequency response
Po = 0.1W, f = 1kHz
+0
0.3
0.8
%
f , f
Po = 0.1W,
dB
20 to 100k
110
Hz
L
H
−3
Input impedance
r
Po = 0.1W, f = 1kHz
kΩ
i
Output noise voltage
V
V
= 58V, Rg = 10k
Ω
mVrms
NO
CC
SANYO Electric Co., Ltd. Semiconductor Business Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN
110297HA (ID) / 9088TA, TS No. 2885—1/7
STK4432
Notes.
For power supply at the time of test, use a constant-voltage power
supply unless otherwise specified.
For measurement of the available time for load short-circuit and out-
put noise voltage, use the specified transformer power supply shown
right.
The output noise voltage is represented by the peak value on rms
scale (VTVM) of average value indicating type. For AC power supply,
use an AC stabilized power supply (50Hz) to eliminate the effect of
flicker noise in AC primary line.
Specified Transformer Power Supply
(Equivalent to RP-25)
Equivalent Circuit
Sample Application Circuit: 25W min 2-Channel AF Power Amplifier
No. 2885—2/7
STK4432
Sample Printed Circuit Pattern for Application Circuit (Cu-foiled side)
Input voltage, Vi - mV
Output power, Po - W
Frequency, f - Hz
Frequency, f - Hz
No. 2885—3/7
STK4432
Operating substrate temperature, Tc - °C
Supply voltage, V - V
CC
Supply voltage, V - V
CC
Output power, Po - W
Frequency, f - Hz
No. 2885—4/7
STK4432
Description of External Parts
Input filter capacitors
C1, C2
• A filter formed with R1 or R2 can be used to reduce noise at high frequencies.
Input coupling capacitors
C3, C4
• Used to block DC current. When the reactance of the capacitor increases at low frequencies, the dependence of 1/f noise on signal source
resistance causes the output noise to worsen. It is better to decrease the reactance.
NF capacitors
• These capacitors fix the low cutoff frequency shown below.
1
C5, C6
C15
f
= ----------------------------------
Hz
L
2
π C5 R3
To provide the desired voltage gain at low frequencies, it is better to increase C5. However, do not increase C5 more than needed because
the pop noise level becomes higher at the time of application of power.
Capacitor for ripple filter
• Used to eliminate the ripple components that mix into the input side from the power line (+V ).
CC
R7, R8
R11
Front stage bias resistors
Front stage bias resistor
Oscillation blocking capacitors
C9, C10
• A polyester film capacitor, being excellent in temperature characteristic, frequency characteristic, is recommended for C9, C10.
R1, R2
R12
Resistors for input filter
Front stage bias resistor
These resistors fix voltage gain VG.
It is recommended to use R3 (R4) = 12
• To adjust VG, it is desirable to change R3 (or R4).
R3, R5
(R4, R6)
Ω for VG = 40dB.
Bootstrap capacitors
C7, C8
R13
• When the capacitor value is decreased, the distortion is liable to be higher at low frequencies.
Resistor for ripple filter
(Limiting resistor for predriver TR at the time of load short)
Output capacitors
• These capacitors fix the low cutoff frequency.
C11, C12
C13
Oscillation blocking capacitor
• Must be inserted as close to the IC power supply pins as possible so that the power supply impedance is decreased to operate the IC stably.
Decoupling capacitor
• When the capacitor value is increased, the starting time is made longer.
C14
R9, R10
Oscillation blocking resistors
No. 2885—5/7
STK4432
Sample Application Circuit (protection circuit and muting circuit)
Thermal Design
The IC power dissipation of the STK4432 at the IC-oper-
ated mode is 30W max. at load resistance 8Ω (simulta-
neous drive of 2 channels) for continuous sine wave as
shown in Figure 1.
In an actual application where a music signal is used, it is
impractical to estimate the power dissipation based on the
continuous signal as shown right, because too large a heat
sink must be used. It is reasonable to estimate the power
dissipation as 1/10 Po max. (EIAJ).
That is, Pd = 21.5W at 8Ω
Thermal resistance θc-a of a heat sink for this IC power
dissipation (Pd) is fixed under conditions 1 and 2 shown
below.
Output power, Po - W
Figure 1. STK4432 Pd – Po (RL = 8Ω)
Condition 1: T = Pd × θc-a + Ta ≤ 125°C .............................................. (1)
C
where Ta : Specified ambient temperature
T : Operating substrate temperature
C
Condition 2: T = Pd × (θc-a) + Pd/4 × (θj-c) + Ta ≤ 150°C.................... (2)
j
where Tj : Junction temperature of power transistor
Assuming that the power dissipation is shared equally among the four power transistors(2 channels × 2), thermal resis-
tance θj-c is 2.8°C/W and
Pd × (θc-a + 2.8/4) + Ta ≤ 150°C........................................ (3)
No. 2885—6/7
STK4432
Thermal resistance θc-a of a heat sink must satisfy ine-
qualities (1) and (3).
Figure 2 shows the relation between Pd and θc-a given
from (1) and (3) with Ta as a parameter.
[Example] The thermal resistance of a heat sink is
obtained when the ambient temperature speci-
fied for a stereo amplifier is 50°C.
Assuming V = 49V, R = 8Ω,
CC
L
R = 8Ω : Pd = 21.5W at 1/10 Po max.
L
The thermal resistance of a heat sink is
obtained from Figure 2.
R = 8Ω : θc-a = 3.49°C/W
L
Tj when a heat sink is used is obtained from
(3).
R = 8Ω : Tj = 140.1°C
L
IC Power dissipation, Pd - W
Figure 2. STK4432 θc-a – Pd
■
■
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 November, 1997. Specifications and information herein are subject to change without notice.
No. 2885—7/7
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