TA8264AHQ [TOSHIBA]
Max Power 41 W BTL x 4 ch Audio Power IC; 最大功率41 W¯¯ BTL ×4通道音频功率IC
| 型号： | TA8264AHQ |
| 厂家： | 
TOSHIBA |
| 描述： | Max Power 41 W BTL x 4 ch Audio Power IC |
| 文件： | 总14页 (文件大小：263K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
TA8264AHQ
TOSHIBA Bipolar Linear Integrated Circuit Silicon Monolithic
TA8264AHQ
Max Power 41 W BTL × 4 ch Audio Power IC
The TA8264AHQ is 4 ch BTL audio power amplifier for car
audio application.
This IC can generate more high power: P
OUT
MAX = 41 W as it
is included the pure complementary PNP and NPN transistor
output stage.
It is designed low distortion ratio for 4 ch BTL audio power
amplifier, built-in stand-by function, muting function, and
diagnosis circuit which can detect output to V /GND short and
CC
over voltage input mode.
Additionally, the AUX amplifier and various kind of protector
for car audio use are built-in.
Weight: 7.7 g (typ.)
Features
•
High power: P MAX (1) = 41 W (typ.)
OUT
(V
CC
= 14.4 V, f = 1 kHz, JEITA max, R = 4 Ω)
L
: P
: P
: P
MAX (2) = 37 W (typ.)
OUT
(V
CC
= 13.7 V, f = 1 kHz, JEITA max, R = 4 Ω)
L
(1) = 24 W (typ.)
OUT
(V
CC
= 14.4 V, f = 1 kHz, THD = 10%, R = 4 Ω)
L
(2) = 21 W (typ.)
OUT
(V
CC
= 13.2 V, f = 1 kHz, THD = 10%, R = 4 Ω)
L
•
•
Built-in diagnosis circuit (pin 25)
Low distortion ratio: THD = 0.02% (typ.)
(V
CC
= 13.2 V, f = 1 kHz, P = 5 W, R = 4 Ω)
OUT L
•
•
•
•
•
•
Low noise: V
= 0.18 mV
(typ.)
= 13.2 V, R = 0 Ω, G = 34dB, BW = 20 Hz~20 kHz)
NO
rms
(V
CC
g
V
Built-in stand-by switch function (pin 4)
Built-in muting function (pin 22)
Built-in AUX amplifier from single input to 2 channels output (pin 16)
Built-in various protection circuit
:
Thermal shut down, over voltage, out to GND, out to V , out to out short, speaker burned
CC
•
Operating supply voltage: V
= 9~18 V
CC (opr)
Note 1: Install the product correctly. Otherwise, it may result in break down, damage and/or degradation to the
product or equipment.
Note 2: These protection functions are intended to avoid some output short circuits or other abnormal conditions
temporarily. These protect functions do not warrant to prevent the IC from being damaged.
- In case of the product would be operated with exceeded guaranteed operating ranges, these
protection features may not operate and some output short circuits may result in the IC being
damaged.
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TA8264AHQ
Block Diagram
1
20
6
TAB
V
CC1
V
CC2
OUT1 (+)
9
8
7
IN1
IN2
11
12
PW-GND1
R
R
L
C
C
1
OUT1 (−)
OUT2 (+)
5
2
3
PW-GND2
L
1
OUT2 (−)
AUX IN
16
15
C
C
6
OUT3 (+)
17
18
19
IN3
IN4
PW-GND3
R
R
L
1
OUT3 (−)
OUT4 (+)
21
24
23
14
13
PW-GND4
L
C
1
OUT4 (−)
PRE-GND
DIAGNOSIS
OUT
RIP
10
STBY
MUTE
22
4
25
: PRE-GND
: PW-GND
Note3: Some of the functional blocks, circuits, or constants in the block diagram may be omitted or simplified for
explanatory purpose.
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TA8264AHQ
Caution and Application Method
(Description is made only on the single channel.)
1. Voltage Gain Adjustment
This IC has no NF (negative feedback) terminals. Therefore, the voltage gain can’t adjusted, but it makes
the device a space and total costs saver.
Amp. 2A
Amp. 1
Input
Amp. 2B
Figure 1 Block Diagram
The voltage gain of Amp.1
: G = 8dB
V1
The voltage gain of Amp.2A, B
: G = 20dB
V2
The voltage gain of BLT Connection : G
= 6dB
V (BTL)
Therefore, the total voltage gain is decided by expression below.
= G + G + G = 8 + 20 + 6 = 34dB
G
V
V1 V2
V (BTL)
2. Stand-by SW Function (pin 4)
By means of controlling pin 4 (stand-by terminal) to
high and low, the power supply can be set to ON and
OFF. The threshold voltage of pin 4 is set at about
V
CC
ON
Power
10 kΩ
4
3V
(typ.), and the power supply current is about 2
BE
OFF
≈ 2V
BE
µA (typ.) at the stand-by state.
to BIAS
CUTTING CIRCUIT
Control Voltage of pin 4: V
SB
(V)
Stand-by
Power
V
SB
ON
OFF
ON
0~1.5
OFF
3~V
CC
Figure 2 With pin 4 set to High,
Power is turned ON
Adjustage of Stand-by SW
(1) Since V
CC
can directly be controlled to ON or OFF by the microcomputer, the switching relay can be
omitted.
(2) Since the control current is microscopic, the switching relay of small current capacity is satisfactory
for switching
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TA8264AHQ
RELAY
Large current capacity switch
BATTERY
BATTERY
FROM
MICROCOMPUTER
V
CC
V
CC
– Conventional Method –
DIRECTLY FROM
MICROCOMPUTER
Small current capacity switch
BATTERY
BATTERY
Stand-By
V
CC
Stand-By V
CC
– Stand-by Switch Method –
Figure 3
3. Muting Function (pin 22)
By means of controlling pin 22 less than 0.5 V, it can make the audio muting condition.
The muting time constant is decided by R and C and these parts is related the pop noise at power
1
4
ON/OFF.
The series resistance; R1 must be set up less than 10 kΩ to get enough muting attenuation.
The muting function have to be controlled by a transistor, FET and micro-controller port which has
I
> 250 µA ability.
MUTE
Pin 22 terminal voltage has the temperature characteristics of 4.6 V (low temperature) to 3.2 V (high
temperature).
Therefore, it is need to design with attention as using the micro-controller of which operating voltage is
less than 5 V.
Terminal 22 may not be pulled up and shall be controlled by OPEN/LOW.
When it is obliged to do, it must be pulled up via diode, because it has to defend flowing reverse current
to internal circuit of pin 22.
<Recommended Application>
ATT – V
MUTE
20
0
I (100 µA)
A
10 kΩ
5 kΩ
R
1
I
22
MUTE (OFF)
I
−20
−40
−60
−80
−100
MUTE
V
MUTE
<Application for pulled up>
V
P
= 13.2 V
CC
= 10 W
o
I (100 µA)
PL = 4 Ω
f = 1 kHz
R
1
I
22
MUTE (OFF)
0
0.4
0.8
1
1.2
1.6
2
2.4
2.8 3
I
MUTE
Point A voltage: V
(V)
MUTE
V
MUTE
Figure 4 Muting Function
Figure 5 Mute Attenuation − V
(V)
MUTE
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TA8264AHQ
4. AUX Input (pin 16)
20dB AMP.
The pin 16 is for input terminal of AUX
amplifier.
The total gain is 0dB by using of AUX amplifier.
Therefore, the µ-COM can directly drive the
AUX amplifier.
BEEP sound or voice synthesizer signal can be
input to pin 16 directly.
IN
OUT (+)
OUT (−)
AUX AMP
When AUX function is not used, this pin must be
connected to PRE-GND (pin 13) via a capacitor.
AUX-IN
16
µ-COM
−20dB
Figure 6 AUX Input
5. Diagnosis Output (pin 25)
This diagnosis output terminal of pin 25 has open collector output structure on chip as shown in Figure 7.
In case diagnosis circuit that detect unusual case is operated, NPN transistor (Q1) is turned on.
It is possible to protect all the system of apparatus as well as power IC protection.
In case of being unused this function, use this IC as open-connection on pin 25.
5 V
25
5 V
OUTPUT SHORT
Q1
PROTECTOR
OVER VOLTAGE
PROTECTOR
GND
t
Q1 is turned on
pin 25: Open collector output (active low)
Figure 7 Self Diagnosis Output
5.1 In Case of Shorting Output to V /GND or Over Voltage Power Supplied
CC
NPN transistor (Q1) is turned on.
Threshold of over voltage protection: V
= 22 V (typ.)
CC
5 V
LED/LCD (Flashing)
µ-COM
25
(Announcement from a speaker.)
ALARM
REGULATOR → OFF (Relay → OFF)
MEMORY
(Count and record)
Figure 8 Application 1
5.2 In Case of Shorting Output to Output
NPN transistor (Q1) is turned on and off in response to the input signal voltage.
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TA8264AHQ
6. Prevention of speaker burning accident (In Case of Rare Short Circuit of Speaker)
When the direct current resistance between OUT + and OUT − terminal becomes 1 Ω or less and output
current over 4 A flows, this IC makes a protection circuit operate and suppresses the current into a speaker.
This system makes the burning accident of the speaker prevent as below mechanism.
<The guess mechanism of a burning accident of the speaker>
Abnormal output offset voltage (voltage between OUT + and OUT −) over 4 V is made by the external
circuit failure.(Note 4)
↓
The speaker impedance becomes 1 Ω or less as it is in a rare short circuit condition.
↓
The current more than 4 A flows into the speaker and the speaker is burned.
Current into a speaker
Operating point of protector
Less than 4 Ω
Speaker impedance
About 1 Ω
4 Ω
Figure 9
Note 4: It is appeared by biased input DC voltage
(for example, large leakage of the input capacitor, short-circuit between copper patterns of PCB.)
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TA8264AHQ
6.1 Applications
When output terminals short-circuit to V
or GND, the voltage of 25pin is fixed to “L”.
CC
And when shorting OUT + to OUT −, “L” and “H” are switched according to an input signal.
Therefore, it is possible to judge how the power IC condition is if a micro-controller detects the
25pin voltage that is smoothed out with LPF.
It is recommend that the threshold voltage (Vth) is set up as higher as possible because output level
of LPF is changed according to an input signal.
(for example, Vth is set up to 4 V if 25pin is pulled up to 5 V line.)
Output voltage of L.P.F.
Operating point of protector
5 V
Output power
Figure 10
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TA8264AHQ
Maximum Ratings (Ta = 25°C)
Characteristics
Symbol
Rating
Unit
Peak supply voltage (0.2 s)
DC supply voltage
V
50
25
V
V
CC (surge)
V
CC (DC)
CC (opr)
O (peak)
Operation supply voltage
Output current (peak)
Power dissipation
V
18
V
I
9
A
P
(Note 5)
125
W
°C
°C
D
Operation temperature
Storage temperature
T
opr
−40~85
−55~150
T
stg
Note 5: Package thermal resistance θ = 1°C/W (typ.)
j-T
(Ta = 25°C, with infinite heat sink)
The absolute maximum ratings of a semiconductor device are a set of specified parameter values, which must not
be exceeded during operation, even for an instant. If any of these rating would be exceeded during operation, the
device electrical characteristics may be irreparably altered and the reliability and lifetime of the device can no
longer be guaranteed. Moreover, these operations with exceeded ratings may cause break down, damage and/or
degradation to any other equipment. Applications using the device should be designed such that each maximum
rating will never be exceeded in any operating conditions. Before using, creating and/or producing designs, refer to
and comply with the precautions and conditions set forth in this documents.
Electrical Characteristics
(unless otherwise specified
V
CC
= 13.2 V, f = 1 kHz, R = 4 Ω, Ta = 25°C)
L
Test
Circuit
Characteristics
Symbol
Test Condition
Min
Typ.
Max
Unit
mA
Quiescent current
I
⎯
V
V
V
V
= 0
⎯
⎯
200
41
400
⎯
CCQ
IN
P
P
MAX (1)
MAX (2)
⎯
= 14.4 V, max Power
= 13.7 V, max Power
= 14.4 V, THD = 10%
OUT
OUT
CC
CC
CC
⎯
⎯
37
⎯
Output power
W
P
OUT
P
OUT
(1)
(2)
⎯
⎯
24
⎯
⎯
THD = 10%
19
⎯
21
⎯
Total harmonic distortion
Voltage gain
THD
⎯
P
V
V
= 5 W
0.02
34
0.2
36
%
OUT
OUT
OUT
G
V
⎯
= 0.775 Vrms (0dBm)
= 0.775 Vrms (0dBm)
32
−1.0
⎯
dB
Voltage gain ratio
∆G
⎯
0
1.0
⎯
V
V
(1)
⎯
Rg = 0 Ω, DIN45405
0.20
0.18
NO
NO
Output noise voltage
mVrms
V
(2)
⎯
Rg = 0 Ω, BW = 20 Hz~20 kHz
⎯
0.42
f
V
= 100 Hz, Rg = 620 Ω
rip
rip
Ripple rejection ratio
Cross talk
R.R.
C.T.
⎯
⎯
40
50
60
⎯
⎯
dB
dB
= 0.775 Vrms (0dBm)
Rg = 620 Ω
V
⎯
= 0.775 Vrms (0dBm)
OUT
Output offset voltage
Input resistance
V
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
−150
⎯
0
30
+150
⎯
mV
kΩ
µA
OFFSET
R
IN
Stand-by current
I
Stand-by condition
Power: ON
⎯
2
10
SB
V
H
L
3.0
0
⎯
V
CC
SB
Stand-by control voltage
V
V
Power: OFF
Mute: OFF
⎯
1.5
SB
V
M
H
Open
⎯
⎯
Mute control voltage
Mute attenuation
(Note 6)
V
L
Mute: ON, R = 10 kΩ
0
0.5
V
M
1
Mute: ON,
ATT M
⎯
V
= 7.75 Vrms (20dBm) at
80
90
⎯
dB
OUT
Mute: OFF.
Note 6: Muting function have to be controlled by open and low logic, which logic is a transistor, FET and µ-COM port
of IMUTE > 250 µA ability.This means than the mute control terminal : pin 22 must not be pulled-up.
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TA8264AHQ
Test Circuit
1
20
6
TAB
V
CC1
V
CC2
OUT1 (+)
9
8
7
0.22 µF
IN1
IN2
11
12
PW-GND1
R
R
L
C
1
OUT1 (−)
OUT2 (+)
5
2
3
0.22 µF
PW-GND2
L
C
1
OUT2 (−)
0.22 µF
AUX IN
16
15
C
6
OUT3 (+)
17
18
19
0.22 µF
IN3
IN4
PW-GND3
R
R
L
C
1
OUT3 (−)
OUT4 (+)
21
24
23
0.22 µF
14
13
PW-GND4
L
C
1
OUT4 (−)
PRE-GND
DIAGNOSIS
OUT
RIP
10
STBY
MUTE
22
4
25
: PRE-GND
: PW-GND
Components in the test circuits are only used to obtain and confirm the device characteristics.
These components and circuits do not warrant to prevent the application equipment from malfunction or failure.
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TA8264AHQ
T.H.D – P
T.H.D – P
OUT
OUT
100
100
f = 1 kHz
= 4 Ω
V
= 13.2 V
CC
= 4 Ω
R
L
R
L
10
10
1
1
10 kHz
9.0 V
13.2 V
100 Hz
1 kHz
0.1
0.1
16.0 V
0.01
0.1
0.01
0.1
1
10
100
1
10
100
Output power
P
(W)
Output power
P
(W)
OUT
OUT
I
– V
T.H.D – f
CCQ
CC
400
300
200
100
0
1
R
= ∞
L
V
IN
= 0
0.1
OUT3
OUT2, 3
OUT4
0.01
V
= 13.2 V
CC
R
= 4 Ω
L
P
out
= 5 W
0.001
0
10
Power supply voltage
20
30
10
100
1 k
Frequency f (Hz)
10 k
100 k
V
CC
(V)
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TA8264AHQ
V
NO
– R
R.R. – f
g
300
250
200
150
100
50
0
−10
−20
−30
−40
−50
−60
−70
V
= 13.2 V
CC
= 4 Ω
V
= 13.2 V
CC
R
L
R
R
= 4 Ω
L
BW = 20 Hz~20 kHz
= 620 Ω
g
V
rip
= 0dBm
0
10
100
1 k
10 k
g
100 k
100 k
100 k
10
100
1 k
10 k
100 k
Singnal source resistance
R
(Ω)
Frequency
f (Hz)
C.T. – f (OUT1)
C.T. – f (OUT2)
0
−10
−20
−30
−40
−50
−60
−70
0
−10
−20
−30
−40
−50
−60
−70
V
= 13.2 V
V
CC
= 13.2 V
CC
R
= 4 Ω
R
= 4 Ω
L
L
V
= 0dBm
V
OUT
= 0dBm
OUT
R
= 620 Ω
R
= 620 Ω
g
g
OUT1 → OUT2, 3, 4
OUT2 → OUT1, 3, 4
10
100
1 k
10 k
10
100
1 k
10 k
100 k
Frequency
f
(Hz)
Frequency
f (Hz)
C.T. – f (OUT3)
C.T. – f (OUT4)
0
−10
−20
−30
−40
−50
−60
−70
0
−10
−20
−30
−40
−50
−60
−70
V
= 13.2 V
V
CC
= 13.2 V
CC
R
= 4 Ω
R
= 4 Ω
L
L
V
= 0dBm
V
OUT
= 0dBm
OUT
R
= 620 Ω
R = 620 Ω
g
g
OUT3 → OUT4
OUT4 → OUT1, 2, 3
OUT3 → OUT1, 2
10
100
1 k
10 k
10
100
1 k
10 k
100 k
Frequency
f
(Hz)
Frequency
f (Hz)
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TA8264AHQ
G
V
– f
P
– POUT
D
40
35
30
25
20
15
10
5
70
60
16 V
50
40
30
20
10
0
13.2 V
V
= 13.2 V
CC
9 V
R
V
= 4 Ω
L
f = 1 kHz
R
= 0dBm
= 4 Ω
OUT
L
0
10
0
5
10
15
20
25
100
1 k
10 k
100 k
Frequency
f
(Hz)
Output power
P
/ch (C)
OUT
P
D
MAX – Ta
120
100
80
60
40
20
0
① INFINITE HEAT SINK
RθJC = 1°C/W
② HEAT SINK (RθHS = 3.5°C/W)
RθJC + RθHS = 4.5°C/W
③ NO HEAT SINK
RθJA = 39°C/W
①
②
③
0
25
50
75
100
125
150
Ambient temperature Ta (°C)
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TA8264AHQ
Package Dimensions
Weight: 7.7 g (typ.)
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TA8264AHQ
About solderability, following conditions were confirmed
• Solderability
(1) Use of Sn-63Pb solder Bath
· solder bath temperature = 230°C
· dipping time = 5 seconds
· the number of times = once
· use of R-type flux
(2) Use of Sn-3.0Ag-0.5Cu solder Bath
· solder bath temperature = 245°C
· dipping time = 5 seconds
· the number of times = once
· use of R-type flux
RESTRICTIONS ON PRODUCT USE
030619EBF
• The information contained herein is subject to change without notice.
• The information contained herein is presented only as a guide for the applications of our products. No
responsibility is assumed by TOSHIBA for any infringements of patents or other rights of the third parties which
may result from its use. No license is granted by implication or otherwise under any patent or patent rights of
TOSHIBA or others.
• 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.
• TOSHIBA products should not be embedded to the downstream products which are prohibited to be produced
and sold, under any law and regulations.
• This product generates heat during normal operation. However, substandard performance or malfunction may
cause the product and its peripherals to reach abnormally high temperatures.
The product is often the final stage (the external output stage) of a circuit. Substandard performance or
malfunction of the destination device to which the circuit supplies output may cause damage to the circuit or to the
product.
14
2004-05-10
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