扣·久，-
TA.7250BP
TA7251BP
BTL 音频功率放大
ïJ l 脚外形特征
(23W)
单列· 12 脚一 l
,
内电路方框图和典型使用电路
町
lK 'o
百.
③
TA7251BP
"
4
B
+li-、
TA7250BP
、品
nJ~nu.•
,
n忖
A
nu aaF
aZF
1 k ,o
,
.
，矿
.、
• 155 •
、在严
,.r
1
电气特性，擞 (vCC = 13.2V, R L =40, ~g =6000,
f= 1kHz, T a = 2St)
参数名称
参数值
测试条件
符号
Icco
输出功率
Po
THD = 100/0
电压增益
输出噪声电压
20
R L =20
THD = 10/0 ,
== 50Hz- 20kHz
Po
总谐波失真度
120
23
30
18
Vi =0
Po
THD
Gy
39.5
V 1 = 寸 OdBm
200 ,
滤波
mA
,
.'，，J，二._".tI
W 飞、
w
w
0.015. 0.1
42.5
41
0.25
0.35
0.>9
P。 =4W
V No Rg =0， 用 DIN45405
V No IRg = 10kO,
= 20Hz- 20kHz
位
最小典型最大 i 单
;:,
静态电流
1
%
dB
mVrms
mVrms
飞
电源在波抑制比I
Ræ,
k=t∞H叭=OdBμ
I 40
47
I
I dB
极限使用条件 (Ta =25t)
峰值电源电压 V CCl =50V
(t =O.2s)
直流电源电压 V cc2 =25V
•
工作电源电压 V cc =18V 奇
峰值输出电流 ι=9A
、
电源功耗 PD =2SW
工作温度 Topr=-30~+85 ℃
存放温度 T stg = 寸 5-+150t
..,
使用说明
.、
TA72S0B J>和 TA7251BP 是 BTL 形式的音频功率放大器集成电路。
该电路具有 23W 的高功率输出，并且设计成两种引脚排列: TA7250BP 是
正向排列， TA72SlBP 是反方向排列，便于在不同的印刷电路板上排列.该
电路还具有下列特点.
。在 R"L ==40, V cc =13.2V 时，可输出 23W 功率，着 R L =2Cl 肘，功率
可达3'OW.
O低失真皮.
。内部具有多种保护电路;过压保护，负载电路保护，负载时地和负
时 Vcc 短路，以及过热保护功能 o
。工作电压黯圄蜡i可在 9---18V 以下工作·
L
TÂ72S0 的电压增擅自@①脚对地的服臀串联电路 Rfi 和 Rp 接茧
‘二始d
‘
~^7~S~l伊引蹄排列硝接与 TA7
,
•
,
,
、
\
飞
、
.1
‘.、
• 157 •
『愉啕民午
....~.ζ乡、
句 tizs?
i
一 239 一
4、
星兰嚣噩噩置3793tAFi--J=;
低频功率放大器
TA7250B/7251B
.方块肉/电路例
0
·特征
音频功率放大器
万畏
极限参鼓 (TA=25OC)
电源电压
VCCSl 8V (有信号 )1
VCC~25V (元馆号
电源怠变
VSURGE~50币
工作条件( TA=25 C)
电源范围
VCC=9.0-18V
lkll
BTL专用
(40 负载)
短路/过电压/热傻护
输出电流
I 间 .0Ap倒K
VCC=13. 衍， R L=4 .0Q
功耗
RG=600Q , f =l.OkHz
环境温度
PD :i 25W
T A=-30~85-C
也特性 (T A=25 -c)
23W
与 TA7250B 和 TA7251B~1 脚配置对称
.封装
12~1 脚 SIP
项
输，气
⑨ "川敛峭叫字料
m
唏机川不阿
•
，.血'7 "087F
B
1',...,
|符号!
条
件
1110
t618'
工作条件 (T A=25 C)
电源范围
VCC=9.0-1RV
极限参数 (TA=25 C)
电源电压
VCC~l 8V (有信号
VCC:二25V(无信号
电源怠变
VSURGE~ 锦V
输出电流
1 如4.5Apeak
功耗
PD~15W
0
0
·特征
音频功率放大器
5.9W
9.6W
r最小|标准 l 最大 l 单位
元f言?毛将...........j~.Ç~Q.l... ……... ... """ .... .J..l.... J.J.~9. ..J到Q..L.~ …
输出功率
/P 0 IT H D=1 OX
I 20 I 23 I / I W
…←……<1-_...哇~Q;，J~.~芳 ...Q.Q. .J. .l.. .. J. ..~Q .. J. .l.. .，…男.. -...
总f桃树 ...........Jr.~.p.段.~!.Q!t... …..…..1../...川…..P.
电压增益
i比
AV
/V如0
创
d勘蜘】
13
扮
9.5
们I 们
4 1 14
2.5 I dB
……·…………………………....…~…….
.铅
…
我弹穿注明.. .… ..1Y.叹 J~.W吱OH军~?Q购..J. ./.....J.~!~~.l.~!~..!…，~.
.终模抑.制~号..... ....., j~.B... Jf .7~.Q~~~... ...... .... .J. ..~Q ..J.. .ft.LJ.. ..1..何.，
.方块肉/电路倒
TA7252A
目与
(40 负载)
(20 负我)
0
电特性 (TA=25 C)
VCC=13. 衍 J RL=4 .0C
RG=6 000 , f= 1. 0kHz
短路/过电压/热保护
.封装
7号!脚 SIP
项
输入
目
|符号 i
环境温皮
条
件一
T A=-30-75-C
I 豪夺 i标本 i 最大 i 单位
无信号电流
输出功率
Jtt,
II CCO I
I / I 35 J 65 I IIA
IPO ITHD二 10~
I 5.0 I 5.9 1 / I 1i
..1....... .P.1…JQ~J旦与毛.Q.~ .J..J....J旦!~_..J..l.... J..-'!....
恙没容来共..…·… ..Jr.旦P院院qó..~~... ………..1.ι.. .J.~~Q1. J. ~!ι .1...;
电压增益
!A V /V IN=O •5mVrms
I 51 I 53 I 55 I dB
荠.棒并't!~.~........... 川及..Jf. ~吐Q9~~.. ......, • •••• .J.. /.....J. :-.~? .. 1. =:~9... 1...~
.持齐奥拌...............jRIll--·· ……·…...........J. .l... .1...:w. ..1. .1.... J.~g…
TA7250,51BP
TOSHIBA Bipolar Linear Integrated Circuit Silicon Monolithic
TA7250BP,TA7251BP
30W BTL Audio Power Amplifier
The TA7250BP, TA7251BP are BTL audio power amplifier for
consumer applications.
This IC provides high output power of 23W and also provides
wide output power band width.
Normal (TA7250BP) and reverse (TA7251BP) for easier layout
design of PC−board when used in BTL−stereo application.
Features
·
High output power
: POUT (1) = 23W (typ.)
(VCC = 13.2V, f = 1kHz, THD = 10%, RL = 4Ω)
Weight: 4.04g (typ.)
: POUT (2) = 30W (typ.)
(VCC = 13.2V, f = 1kHz, THD = 10%, RL = 2Ω)
·
Excellent output power band width
: POUT (3) = 18W (typ.)
(VCC = 13.2V, f = 50Hz~20kHz, THD = 1%, RL = 4Ω)
·
Low distortion
: THD = 0.015% (typ.) (VCC = 13.2V, f = 1kHz, POUT = 4W, RL = 4Ω)
·
Built in protector circuit
: Thermal shout down, over voltage protection (typ. VCC = 21V)
ASO protection (RL short, Out to GND, Out to VCC)
·
Operating supply voltage range: VCC (opr.) = 9~18V
1
2002-10-30
TOSHIBA
TA7250,51BP
Block Diagram
INPUT~
。
A : TA7250BP
B : TA7251 BP
2
2002-10-30
TA7250,51BP
Application Information
(this explanatory terminal number is for
TA7250BP)
1. Voltage gain
The closed loop voltage gain: GV is determined by Rf1, Rf2
and R0.
If Ro≫Rf1 > Rf2
GV≒20ℓog
R f1
+6 (dB)
R f2
(R0 is established 20kΩ)
Care must be taken, sine the current “I” flows to Rf1 and Rf2
from quiescent output voltage at pin(12) / (7) and it is
impossible decrease so much Rf1 and Rf2.
When GV = 40dB, it is recommended to use Rf1 for 1kΩ and
Rf2 for 20Ω.
2. Oscillation prevention
For the oscillation prevention, the capacitors should be inserted output terminal to GND and output to another
output.
These are recommended to use the polyester film capacitor which temperature characteristics are better.
It use ceramic capacitor, the characteristics is liable to be influenced by temperature, than it is better to use the
capacitor of which capacity is lager than the recommended value, surely carry out the temperature test, and
confirm the oscillation allowance.
Especially when using this IC with the voltage gain reduced or with the feedback amount increased, the phase
inversion is produced in high frequency and the oscillation is liable to be generated.
Therefore, use this IC at GV = 40dB or over after sufficiently checking the capacity of capacitor, type of capacitor
and mounting position of capacitor.
3. Aso circuit
This IC incorporates the protection circuit of out to VCC, out to GND and shorting between output and another
output.
3
2002-10-30
TA7250,51BP
4. R.R. characteristic of ripple rejection
Since the capacity of ripple capacitor of this IC is small R.R., characteristic is influenced described below.
(1) Because Cripple is small (recommended value 0.033µF), the ripple components produced in the bias system
are output at the primary stage phase inversion amplifier which gain 1.
These turn into the input signals v1, v2 of the power amplifier stage.
(2) v1 and v2 are amplifier through the power stage and turned into vo1-vo2.
However, because of the BTL operation, |vo1-vo2| appear as the output ripple voltage.
Therefore, by the gain dispersion of the power stage of ch-1 and ch-2, that is by the resistance ratio
dispersion of the external feedback resistances Rf1, Rf2, R’f1, R’f2 and inside IC, R.R. characteristic is
determined.
Since the pair characteristic of the external feedback resistances ch-1 and ch-2 influences R.R.
characteristic, it is advisable to use the high precision resistance of high characteristic.
5. Capacity of ripple filter
The on / off time constant of the protector of this IC is determined by the capacity of pin(6) ripple filter terminal.
Therefore, with the capacity expansion of the ripple capacitor, the ripple rejection is improved, however, the
following two problems arise.
(1) Interruption of sound at excessive input.
(2) Reduction of the protector strength at VCC-short, GND short or out-out short. Consequently, the capacity of
the ripple capacitor is recommended to by 0.033µF.
4
2002-10-30
TOSHIBA
TA7250,51BP
Standard Print Pattern
O
OUT 1
Vcc
GND
OUT 2
TA7250BP
TOSHIBA
O
O
(Under view)
0
。
820pF
。 I
~啕L
飞\/飞
+
、、'"、‘
.1
忡非。 J
\+/
…
1kO
响fw
0 ....
。
0 . 15μF
押、，
•-;•----0
1kO
伽-付v.--咱
IN
····as--J
100 .u F 飞
飞
MFa'
100μF 飞.'
0-骨?!i0440i
220μF
.、
---。
".、"，-、
、.'飞
、自
J
-wem+
'2\
aF·I·
GND
,,
、「「
""，--、
/ \
O
，刀。'.
伽4←。
0
0
、''
'EEE--ZEE-ad'、'
。
O
OUT 1
。
---0。
飞，，
J
F~
飞 -tff
ll
牢 tEO-
,
、
J
\
L孔。。。
F→←『
、·，
，
JI
、、
，，，
···1
飞、
/、
\ o-tt-o;
0 . 15μF
-9tι
、
I刁 033μh
。____Vcc
。一__ GND
。
O
__OUT
2
O
(Parts description)
5
2002-10-30
TA7250,51BP
Maximum Ratings (Ta = 25°C)
Characteristic
Symbol
Rating
Unit
VCC (surge)
50
V
DC supply voltage
VCC (DC)
25
V
Operating supply voltage
VCC (opr)
18
V
Output current (peak)
Peak supply voltage (0.2s)
Io (peak)
9
A
Power dissipation
PD
25
W
Operating temperature
Topr
-30~85
°C
Storage temperature
Tstg
-55~150
°C
Electrical Characteristics
(unless otherwise specified, VCC = 13.2V, RL = 4Ω, Rg = 600Ω, f = 1kHz, Ta = 25°C)
Characteristic
Symbol
Test
Circuit
ICCQ
—
POUT (1)
Min.
Typ.
Max.
Unit
VIN = 0
—
120
200
mA
—
THD = 10%
20
23
—
W
POUT (2)
—
THD = 10%, RL = 2Ω
—
30
—
W
POUT (3)
—
THD = 1%, f = 50Hz~20kHz
—
18
—
W
THD
—
POUT = 4W
—
0.015
0.1
%
GV
—
VIN = 2.45mVrms
39.5
41
42.5
dB
VNO (1)
—
Rg = 0, DIN45405
noise filter
—
0.25
—
mVrms
VNO (2)
—
Rg = 10kΩ, BW = 20Hz~20kHz
—
0.35
0.9
mVrms
R.R.
—
f = 100Hz,
Vripple = 0.775Vrms (0dBm)
40
47
—
dB
Quiescent current
Output power
Total harmonic
distortion
Voltage gain
Output noise voltage
Ripple rejection ratio
Test Condition
Typ. DC Voltage Of Each Terminal (VCC = 13.2V, Ta = 25°C)
Terminal No.
DC Voltage
(V)
1
2
3
4
5
6
7
8
9
10
11
12
TA7250BP
1.95
0.01
GND
0
1.95
6.6
6.6
12.5
GND
VCC
12.5
6.6
TA7251BP
6.6
12.5
VCC
GND
12.5
6.6
6.6
1.95
0
GND
0.01
1.95
6
2002-10-30
TOSHIBA
TA7250,51BP
Test Circuit
INPUT
G
A
B
: TA7250BP
: TA7251 BP
7
2002-10-30
TOSHIBA
TA7250,51BP
1 nuRd
-
E E国
13.2V
Vcc
RL=4 O,
THD -
1 nuqd
-
11
Vcc
13.2V
RL=2
o,
POUT
…
…
l
l
l...
l
I
I
I
自由 I1
II
II
II
I111
I111
I111
111111
(家) 。工←
(法) 。工←
比
ZOEM
OLFmEU-ZO《
E工
K」《←o ←
ZOZZOLEEU-ZOE区《工 Jd←o ←
0.5
0.3
f=10kHz
0.1
100Hz
0.05
-'
i
0.03
þ)
1kHz
0.01
0.005
l1
OUTPUT POWER
THD 10
。 .053
主
1kHz
0.03
…
国立国
nunvnur3
(W)
OUTPUT POWER
THD -
POUT
(W)
POUT
Vcc= 13.2V
3
1111111"
1
1
11111
11111
11
oz←
• 13.2
L工」《←。←
20 巨匠OE巳
FQU-ZOEV《
ZOEZOEFm-O)军Z
区O
《工」 d ←。←
0.5
0.3
0.1
0.05
0.03
一
4 ~
100Hz
POUT
Vcc= 10V
-….
0.1
f=1kHz
(家) oz←
{db)
f=10kHz
10
乙:~
5
POUT
0.3
0.0
…
国立国
111111
0.3 0.5
0.5,
卫tt
0.5>
0.3
0.1
0.052
RL=2 O,
0.03
4
y
"7'
j
0.0
0.01
AV AUAUE-d
、3
0υ
nHU
E32
10
OUTPUT POWER
POUT
30
50
0.005
100
(W)
0.3 0.5
10
OUTPUT POWER
8
POUT
30
50
100
(W)
2002-10-30
TOSHIBA
TA7250,51BP
THD (NOISE) -
POUT
PD -
10
POUT
32
(JS
f=1kHz
(〉
E〉
} 。也
(川江OZ}
。工←
Vcc= 13 .2V
RL=40
I
Z。一←《垒的
-的
ozu玄。也
'
um-02+ZOEZO←的-ou-ZOEZ
《工」《且户。』
0.5
0.3
O c:::::s
f=1kHz
RL=40
24
Vcc= 16V
16
三f
国飞 仁 30kHz LPF NO FIL TER
.,...
I吨吨
0.0
8
飞、、
h‘h
0 .0
u...L 111
『同‘
16
4
30kHz LPF
24
OUTPUT POWER
PD -
0.0
(〉
E〉
)
0 .00
0 .3 0 .5
30
10
POUT
100
(W)
。 az
OUTPUT POWER
50
。一←《也凉
-的
ogu玄。 a
f
THD 10
POUT=15W
l
•
RL=40
丁
T
40
(W)
POUT
32
24
16
8
1
O
0.5
o
-•
0.3
8
16
24
40
32
48
-寸
OUTPUT POSER
/
0.1
5
。 05
、
0 .033
\
nunu
吨3
AU
EJnU
100
40
1......
x
刊斗判
300500
1k
3k
f
5k
10k
30k
E 〉〉
oa ←E 」
50
FREQUENCY
POUT
POUT -
)〉L50且
(〉
{法
}OZLFZOEgo
←巳。 ν-ZOEZ
《工」《←OLF
Vcc= 13.2V
32
POUT
(Hz)
VCC
f=1kHz
以/
THD=10%
/
32
/
IRL=I~
24
16
/
8
v
O
6
8
/1
17
/
/
/
/
以
,/
10
12
SUPPLY VOLTAGE
9
(W)
14
16
VCC
18
20
(V)
2002-10-30
TA7250,51BP
TOSHIBA
f
POUT -
ICCQ -
Vcc
320
30
}〉LF30ιE〉〉。也←DaLEO
(〉
RL=4
10
ε)συυ-←zωKN-2←υzω)的ω-30
(《
VCC= 13 .2V
.o
THD= 1%
忏一←-
←一 CBOOT=220μF ←一
CNF = 100μF
田'
,
100μF
47μF
0.5
句3
nu1
AU r3hu
- AUAU
1k
300
3k
f
10k
11111
- 50
ν，由
「乞v
r--
-60
0 .6
ωod
飞←」
O 〉…山的-02←3比」3
严0
|什#
CRIPPLE = 0 . 033μF
0 .8
。 Z〉
《gzozυω 「凶区ω.ζ
且一匠
-30
.o
ε』〉
(响
E)
(∞豆，筐
g，
OE
RL=4
-20
叫阿
0.1μF
illll
1k
300
3k
FREQUENCY
f
10k
DIN45405
L CR
。 .2
100
…-
80
VCC= 13.2V
6.2
1k
300
6.0
25
O
20
AMBIENT TEMPERATURE
40
Ta
3k
队
10k
Rg
60
30k
100k
(.0)
Ta
5.8
80
20
INFINITE HEAT SINK
(
4.10 C/W HEAT SINK
(
9S C/W HEAT SINK
\
②
\
队
15
飞、 队、
10
\
F\
③
『、
卡、
、、、
o
、
F\
卜、
\
\
队、民
问 民也
25
50
75
100
AMBIENT TEMPERATURE
10
民
\ 队、
队、
卜、
O
(OC)
(
飞
VIN=O
-20
户'
FILTER (-20kHz)
①
(〉〉)×2
《0ι
6.4
ZOE 《也罚的己也凶ksoιuJ《
E〉〉O 」」《
←zu巨匠3υ ←2ωυ
ω-2σ
的
ICCQ
(〉)匠ω←ZUU〉
6.6
I
.o
30
川叫。《
4』
0〉」FDι
{30 ←Z川
23σ
」
口的川
{E
《 )Oυυ
一
6.8
120
-40
~
,
PD MAX -
VCENTER
O
Rg
SIGNAL SOURCE RESISTANCE
问卢 田'
20
(V)
,
Ta
40
16
VCC
0.4
30
7.0
I
12
RL=4
(Hz)
ICCQ , VCENTER -
同-
8
VCC= 13.2V
O
30k
240
200
J
SUPPLY VOLTAGE
Rg =600 .0
.."..,..
-、.;
4
30k
VCC= 13.2V
160
v •--r-
--
.".
80
VNO -
-10
100
L....--
f
R.R. -
-70
30
160
(Hz)
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240
MUO
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FREQUENCY
-40
VII\1=0
125
Ta
150
175
(OC)
2002-10-30
TA7250,51BP
Package Dimensions
Weight: 4.04g (typ.)
11
2002-10-30
TA7250,51BP
RESTRICTIONS ON PRODUCT USE
000707EBA
· TOSHIBA is continually working to improve the quality and reliability of its products. Nevertheless, semiconductor
devices in general can malfunction or fail due to their inherent electrical sensitivity and vulnerability to physical
stress. It is the responsibility of the buyer, when utilizing TOSHIBA products, to comply with the standards of
safety in making a safe design for the entire system, and to avoid situations in which a malfunction or failure of
such TOSHIBA products could cause loss of human life, bodily injury or damage to property.
In developing your designs, please ensure that TOSHIBA products are used within specified operating ranges as
set forth in the most recent TOSHIBA products specifications. Also, please keep in mind the precautions and
conditions set forth in the “Handling Guide for Semiconductor Devices,” or “TOSHIBA Semiconductor Reliability
Handbook” etc..
· The TOSHIBA products listed in this document are intended for usage in general electronics applications
(computer, personal equipment, office equipment, measuring equipment, industrial robotics, domestic appliances,
etc.). These TOSHIBA products are neither intended nor warranted for usage in equipment that requires
extraordinarily high quality and/or reliability or a malfunction or failure of which may cause loss of human life or
bodily injury (“Unintended Usage”). Unintended Usage include atomic energy control instruments, airplane or
spaceship instruments, transportation instruments, traffic signal instruments, combustion control instruments,
medical instruments, all types of safety devices, etc.. Unintended Usage of TOSHIBA products listed in this
document shall be made at the customer’s own risk.
· The products described in this document are subject to the foreign exchange and foreign trade laws.
· The information contained herein is presented only as a guide for the applications of our products. No
responsibility is assumed by TOSHIBA CORPORATION for any infringements of intellectual property or other
rights of the third parties which may result from its use. No license is granted by implication or otherwise under
any intellectual property or other rights of TOSHIBA CORPORATION or others.
· The information contained herein is subject to change without notice.
12
2002-10-30