參數(shù)資料
型號: AN7551Z
廠商: PANASONIC CORP
元件分類: 音頻/視頻放大
英文描述: Power IC for BTL car audio
中文描述: 19.5 W, 4 CHANNEL, AUDIO AMPLIFIER, PZFM25
文件頁數(shù): 10/11頁
文件大?。?/td> 100K
代理商: AN7551Z
10
AN7561Z
ICs for Audio Common Use
I
Application Circuit Example
1. Be sure to use the circuit with an external heat-sink and fix the external heat-sink on chassis when using it.
2. Connect the heat radiating fin to GND potential.
3. This IC has built-in protection circuit against short-circuit to V
CC
, short-circuit to GND and ASO. However avoid
short-circuit to V
CC
, short-circuit to GND and short-circuit of load.
4. The thermal protection circuit operates at T
j
=
about 150
°
C but it automatically returns to the normal operation when
the temperature decreases.
5. The over voltage protection circuit operates at V
CC
=
about 20 V.
6. Be especially careful to heat radiation design when used at an increased V
CC
.
7. Connect the beep sound input pin to GND when the beep sound function is not used.
8. Do not lower the beep sound input pin below
0.3 V.
9. Keep AUX input pin in open state when AUX function is not used.
10. Connect only GND pin (signal source) to the signal GND of the amplifier in previous stage.
There is a possibility of device destruction under the following conditions;
1. If the power supply pin and GND pin are connected in reverse to the power supply.
2. If the power supply pin and GND pin are in open state and the power supply is connected across the output pins.
3. If the output pin is grounded when GND pin is open.
4. If more than three output pins are grounded to the earth at a time with more than 1.3
short-circuiting resistor with
which the protection circuit does not operate.
5. If plus and minus output pins are short circuited to the supply line at a time with more than 1
short-circuiting resistor
with which the protection circuit does not operate.
6. If the RF pin and the output pin are short circuited and short-circuited to the earth.
1
25
24
4
4
33
μ
F
23
15
21
20
19
6
3
1
4
8
B
A
9
2
M
V
CC
5
2
1
7
18
17
10
12
11
13
4
10 k
1
μ
F
2200
μ
F
1
μ
F
4
1
μ
F
1
μ
F
1
μ
F
10 k
22 k
10 k
5 V
5 V
0 V
10 k
I
Usage notes
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