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AN7191NZ Datasheet(PDF) 6 Page - Panasonic Semiconductor

Part No. AN7191NZ
Description  Dual 20 W BTL audio power amplifier
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Maker  PANASONIC [Panasonic Semiconductor]
Homepage  http://www.panasonic.com/industrial/
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 6 page
background image
6
AN7191NZ
ICs for Audio Common Use
Pin No.
Equivalent circuit
Description
DC voltage
15
Ch.2 output pin (
+) :
6.6 V
Ch.2 positive-phase output pin.
s Terminal Equivalent Circuits (continued)
30 k
1.2 k
14
1
15
Pre-amp.
VREF = 6.6 V
Drive circuit
Drive circuit
s Usage Notes
1. Always attach an outside heat sink when using the chip. Note that, the outside heat sink must be fastened onto a
chassis for use.
2. Connect the cooling fin to GND potential.
3. Avoid short circuit to VCC and short circuit to GND, and load short-circuit.
4. The temperature protection circuit will be actuated at Tj = approx. 150°C, but it is automatically reset when the chip
temperature drops below the above set level.
5. The overvoltage protection circuit starts its operation at VCC = approx. 20 V.
6. Take into consideration the heat radiation design particularly when VCC is set high or when the load is 2 Ω.
7. When the beep sound function is not used, open the beep sound input pin (pin 10) or connect it to pin 9 with around
0.01
µF capacitor.
8. Connect only pin 9 (ground, signal source) to the signal GND of the amplifier in the previous stage. The character-
istics such as distortion, etc. will improve.
s Technical Information
• P
D  Ta curves of HZIP015-P-0745A
PD  Ta
120
113.6
100
80
59.5
60
40.3
40
30.5
20.5
11.3
1.8
0
0
25
50
75
100
125
150
20
Ambient temperature T
a (°C)
Infinit heat sink
1
°C/W heat sink
2°C/W heat sink
3°C/W heat sink
5°C/W heat sink
10°C/W heat sink
Without heat sink
Rth (j−c) = 1.1°C/W
Pth (j−a) = 68.3°C/W




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