ta8275h TOSHIBA Semiconductor CORPORATION, ta8275h Datasheet - Page 5

• Manufacturer Part Number: ta8275h
• Description: Max Power 41 W Btl X 4 Ch Audio Power Ic
• Manufacturer: TOSHIBA Semiconductor CORPORATION

4. AUX Input
5.
5.1
5.2
AUX amplifier.
input to pin 16 directly.
connected to PRE-GND (pin 13) via a capacitor.
Diagnosis Output
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.
amplifier.
The pin 16 is for input terminal of AUX
The total gain is 0 dB by using of AUX amplifier.
Therefore, the m-COM can directly drive the
BEEP sound or voice synthesizer signal can be
When AUX function is not used, this pin must be
This diagnosis output terminal of pin 25 has open collector output structure on chip as shown in Figure 7.
In case of being unused this function, use this IC as open-connection on pin 25.
In Case of Shorting Output to V
In Case of Shorting Output to Output
NPN Tr. (Q1) is turned on.
Threshold of over voltage protection: V
NPN Tr. (Q1) is turned on and off in response to the input signal voltage.
(pin 16)
OUTPUT SHORT
OVER VOLTAGE
PROTECTOR
PROTECTOR
25
(pin 25)
Figure 7 Self Diagnosis Output
5 V
MEMORY (Count and record)
m-COM
pin 25: Open collector output (active low)
Figure 8 Application 1
CC
Q1
25
/GND or Over Voltage Power Supplied
CC
5
= 22 V (typ.)
5 V
LED/LCD
REGULATOR È OFF
ALAME
m-COM
GND
5 V
V25
(Flashing)
(Announcement from a speaker.)
AUX-IN
IN
Figure 6 AUX Input
16
(Relay È OFF)
Q1 is turned on
AUX AMP
-
t
20 dB
20 dB AMP.
2002-02-13
TA8275H
OUT (+)
OUT (-)