ta8272h TOSHIBA Semiconductor CORPORATION, ta8272h Datasheet - Page 5

• Manufacturer Part Number: ta8272h
• Manufacturer: TOSHIBA Semiconductor CORPORATION

4. AUX Input
5.
5.1
5.2
amplifier.
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 transistor (Q1) or (Q2) is turned on.
It is possible to protect all the system of apparatus as well as power IC protection.
The pin 16 is for input terminal of AUX
The total gain is 0dB 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 transistor (Q1) is turned on.
Threshold of over voltage protection: V
NPN transistor (Q1) is turned on and off in response to the input signal voltage.
(pin 16)
OUTPUT OFFSET
OUTPUT SHORT
OVER VOLTAGE
25
(pin 25)
PROTECTOR
PROTECTOR
DETECTOR
VOLTAGE
Figure 7 Self Diagnosis Output
5 V
MEMORY (Count and record)
pin 25: Open collector output (active low)
m-COM
Figure 8 Application 1
CC
Q2
/GND or Over Voltage Power Supplied
Q1
CC
25
5
= 22 V (typ.)
REGULATOR → OFF
LED/LCD
ALARM
5 V
m-COM
GND
5 V
(Flashing)
(Announcement from a speaker.)
AUX-IN
IN
Figure 6 AUX Input
16
(Relay → OFF)
Q1 is turned on
Q2 is turned on
AUX AMP
-
t
20dB
20dB AMP.
2002-06-20
TA8272H
OUT (+)
OUT (-)