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PDF TA8270HQ Data sheet ( Hoja de datos )
| Número de pieza | TA8270HQ | |
| Descripción | Max Power 43 W BTL x 4 ch High Efficiency Audio Power IC | |
| Fabricantes | Toshiba | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de TA8270HQ (archivo pdf) en la parte inferior de esta página. Total 16 Páginas | ||
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TA8270HQ
TOSHIBA Bipolar Linear Integrated Circuit Silicon Monolithic
TA8270HQ
Max Power 43 W BTL × 4 ch High Efficiency Audio Power IC
The TA8270HQ is TOSHIBA original class KB (Keyed BTL)
high efficiency audio amplifier for car audio applications.
The Class KB solutions is no need an external LPF for EMI
rejection and then it is possible to design for limited small DIN
size chassis.
Conversely, the class D must need an external LPF.
Power dissipation of class KB is no more than a half of the
class AB solutions.
Therefore, it is possible to design a smaller heatsink and keep
lower internal temperature into the car audio set; internal
cassette part, CD/MD part etc.
Weight: 7.7 g (typ.)
This IC can generate more high power and high quality sounds
as it is included the pure complementary PNP and NPN transistor output stage.
Additionally, stand-by function, mute function, various kind of protector and diagnosis function included output
offset voltage detection for car audio use are built-in.
Features
• High power : POUTMAX (1) = 43 W (typ.)
(VCC = 14.4 V, f = 1 kHz, JEITA max, RL = 4 Ω)
: POUTMAX (2) = 40 W (typ.)
(VCC = 13.7 V, f = 1 kHz, JEITA max, RL = 4 Ω)
: POUT (1) = 28 W (typ.)
(VCC = 14.4 V, f = 1 kHz, THD = 10%, RL = 4 Ω)
: POUT (2) = 24 W (typ.)
(VCC = 13.2 V, f = 1 kHz, THD = 10%, RL = 4 Ω)
• Built-in diagnosis circuit (pin 25)
• Low distortion ratio: THD = 0.04% (typ.)
(VCC = 13.2 V, f = 1 kHz, POUT = 2 W, RL = 4 Ω)
• Low noise: VNO = 0.13 mVrms (typ.)
(VCC = 13.2 V, Rg = 0 Ω, GV = 26dB, BW = 20 Hz~20 kHz)
• Built-in stand-by switch (pin 4)
• Built-in muting function (pin 22)
• Built-in various protection circuit
: Thermal shut down, over voltage, out to GND, out to VCC, out to out short
• Operating supply voltage: VCC (opr) = 9~16 V
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.
1 2006-04-28
1 page  
4. Center Amp Pin: Center (pin 16)
Output from the center amp, which determines the
reference voltage for output in the IC, is connected to
this pin.
Connecting a capacitor to the pin rejects the ripple
component, reducing the distortion ratio of the audio
output.
CENTER
16
PW-GND
TA8270HQ
Center amp
Figure 6 CENTER
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) or (Q2) 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.
Output offset
voltage detector
Output clip
detector
Output short
protector
Over voltage
protector
5V
25
Q2
V
5V
pin 25 voltage
GND
Q1
Base voltage of Q1
Base voltage of Q2
Offset
Det.
Clip Det.
Short Det.
t
pin 25: Open collector output (active low)
Figure 7 Self Diagnosis Output
5.1 In Case of Shorting Output to VCC/GND or Over Voltage Power Supplied
NPN transistor. (Q1) is turned on.
Threshold of over voltage protection: VCC = 22 V (typ.)
5V
25 µ-COM
LED/LCD (Flashing)
ALARM (Announcement from a speaker.)
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.
5 2006-04-28
5 Page 
400
RL = ∞
VIN = 0
300
ICCQ – VCC
200
100
0
0 5 10 15 20 25 30
Power supply voltage VCC (V)
TA8270HQ
10
VCC = 13.2 V
RL = 4 Ω
3 POUT = 2 W
1
0.3
0.1
T.H.D – f
OUT113
OUT2/4
0.03
0.01
10
100
1000
10000
Frequency (Hz)
100000
0
−10
−20
−30
−40
−50
−60
−70
10
C.T. – f (OUT1)
VCC = 13.2 V
RL = 4 Ω
VOUT = 0dBm
Rg = 620 Ω
OUT1 → OUT2, 3, 4
100
1000
10000
Frequency (Hz)
100000
0
−10
−20
−30
−40
−50
−60
−70
10
C.T. – f (OUT2)
VCC = 13.2 V
RL = 4 Ω
VOUT = 0dBm
Rg = 620 Ω
OUT2 → OUT1, 3, 4
100
1000
10000
Frequency (Hz)
100000
0
−10
−20
−30
−40
−50
−60
−70
10
C.T. – f (OUT3)
VCC = 13.2 V
RL = 4 Ω
VOUT = 0dBm
Rg = 620 Ω
OUT3 → OUT1, 2, 4
100
1000
10000
Frequency (Hz)
100000
0
−10
−20
−30
−40
−50
−60
−70
10
C.T. – f (OUT4)
VCC = 13.2 V
RL = 4 Ω
VOUT = 0dBm
Rg = 620 Ω
OUT4 → OUT1, 2, 3
100
1000
10000
Frequency (Hz)
100000
11 2006-04-28
11 Page | ||
| Páginas | Total 16 Páginas | |
| PDF Descargar | [ Datasheet TA8270HQ.PDF ] | |
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