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PDF TA8276H Data sheet ( Hoja de datos )
| Número de pieza | TA8276H | |
| Descripción | Max Power 35 W BTL x 4 ch Audio Power IC | |
| Fabricantes | Toshiba | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de TA8276H (archivo pdf) en la parte inferior de esta página. Total 14 Páginas | ||
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TOSHIBA Bipolar Linear Integrated Circuit Silicon Monolithic
TA8276H
Max Power 35 W BTL × 4 ch Audio Power IC
TA8276H
The TA8276H is 4 ch BTL audio power amplifier for car audio
application.
This IC can generate more high power: POUTMAX = 35 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, output
clipping detection and diagnosis circuit which can detect output
to VCC/GND short and over voltage input mode.
Additionally, the AUX amplifier and various kind of protector
for car audio use are built-in.
Features
Weight: 7.7 g (typ.)
· High power : POUTMAX (1) = 35 W (typ.)
(VCC = 14.4 V, f = 1 kHz, JEITA max, RL = 4 Ω)
: POUTMAX (2) = 31 W (typ.)
(VCC = 13.7 V, f = 1 kHz, JEITA max, RL = 4 Ω)
: POUT (1) = 23 W (typ.)
(VCC = 14.4 V, f = 1 kHz, THD = 10%, RL = 4 Ω)
: POUT (2) = 20 W (typ.)
(VCC = 13.2 V, f = 1 kHz, THD = 10%, RL = 4 Ω)
· Built-in output clipping detection and diagnosis circuit (pin 25)
· Low distortion ratio: THD = 0.02% (typ.)
(VCC = 13.2 V, f = 1 kHz, POUT = 5 W, RL = 4 Ω)
· Low noise: VNO = 0.10 mVrms (typ.)
1. (VCC = 13.2 V, Rg = 0 Ω, GV = 26 dB, BW = 20 Hz~20 kHz)
· Built-in stand-by switch (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 VCC, out to out short, speaker burned
· Operating supply voltage: VCC (opr) = 9~18 V
1 2002-02-13
1 page  
TA8276H
4. AUX Input (pin 16)
The pin 16 is for input terminal of AUX
amplifier.
The total gain is 0 dB by using of AUX amplifier.
Therefore, the m-COM can directly drive the
AUX amplifier.
BEEP sound or voice synthesizer signal can be
input to pin 16 directly.
When AUX function is not used, this pin must be
connected to PRE-GND (pin 13) via a capacitor.
20 dB AMP.
IN
AUX-IN
m-COM
16
AUX AMP
-20 dB
OUT (+)
OUT (-)
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 Tr. (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.
5V
OUTPUT CLIP
DETECTOR
OUTPUT SHORT
PROTECTOR
OVER VOLTAGE
PROTECTOR
25
Q1
V25
5V
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 VCC/GND or Over Voltage Power Supplied
NPN Tr. (Q1) is turned on.
Threshold of over voltage protection: VCC = 22 V (typ.)
5V
25 m-COM
LED/LCD (Flashing)
ALAME (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 Tr. (Q1) is turned on and off in response to the input signal voltage.
5
2002-02-13
5 Page 
300
VCC = 13.2 V
RL = 4 W
250 BW = 20 Hz~20 kHz
VNO – Rg
200
150
100
50
0
10 100 1 k 10 k 100 k
Signal source resistance Rg (9)
C.T. – f (OUT1)
0
VCC = 13.2 V
-10 VOUT = 0.775 Vrms (0 dBm)
Rg = 620 W
-20 RL = 4 W
-30
-40
-50
-60
-70
10
OUT1 ® OUT2, 3
100 1 k
OUT1 ® OUT4
10 k 100 k
Frequency f (Hz)
TA8276H
0
VCC = 13.2 V
-10 RL = 4 W
Rg = 620 W
-20 Vrip = 0dBm
-30
R.R. – f
-40
-50
-60
-70
10
100 1 k 10 k
Frequency f (Hz)
100 k
C.T. – f (OUT2)
0
VCC = 13.2 V
-10 VOUT = 0.775 Vrms (0 dBm)
Rg = 620 W
-20 RL = 4 W
-30
-40
-50
-60
-70
10
OUT2 ® OUT1
OUT2 ® OUT3, 4
100 1 k
10 k 100 k
Frequency f (Hz)
0
VCC = 13.2 V
-10 RL = 4 W
VOUT = 0dBm
-20 Rg = 620 W
C.T. – f (OUT3)
-30
-40
-50
-60
-70
10
OUT3 ® OUT4
OUT3 ® OUT1
100 1 k
OUT3 ® OUT2
10 k 100 k
Frequency f (Hz)
0
VCC = 13.2 V
-10 RL = 4 W
VOUT = 0dBm
-20 Rg = 620 W
C.T. – f (OUT4)
-30
-40
-50
-60
-70
10
OUT4 ® OUT3
OUT4 ® OUT1, 2
100 1 k
10 k 100 k
Frequency f (Hz)
11 2002-02-13
11 Page | ||
| Páginas | Total 14 Páginas | |
| PDF Descargar | [ Datasheet TA8276H.PDF ] | |
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