LV49152V 查看數據表（PDF） - SANYO -> Panasonic
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LV49152V Datasheet PDF : 24 Pages
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LV49152V
PLC
The PLC (power level control) function is able to control the maximum index modulation by setting a value of external
PLC resistance R1 voluntarily, and prevent a PWM signal from becoming the over modulation mode. In addition, this
circuit can be use as output power limit circuit because the PLC function can set the maximum index modulation
voluntarily, and variable from 2W to 15W with output power linearly in the state that made the power supply voltage and
load resistance fixation. Because the PLC function can set the suitable rated output with the same power supply
voltage/speaker regardless of screen size in flat screen televisions by this, set can plan the commonization of the board.
Furthermore, The PLC function can reduce abnormal noise in the hard clip so that output wave pattern becomes the soft
clip when it limited output power.
PLC 5 LV49152V
R1
1μF
GND 13
MAX. Power
Half Power
Min. Power
Function image
Measuring condition
VD = 15V, RL = 8Ω, L = 33μH (TOKO : A7502BY-330M), C = 0.1uF,CL = 0.47μF,Ta = 25°C
R1 -- PO@THD + N = 10%
18
VD = 15V
16 RL = 8Ω
fin = 1kHz
14 THD + N = 10%
2ch-Drive
12 AES17
10
8
6
4
2
0
0
2
4
6
8 10 12 14 16 18 20
R1 – kΩ
R1 [kΩ]
3.0
3.6
4.7
6.2
7.5
8.2
9.1
10
13
15
20
Po@10% [W]
0.694
1.073
1.982
3.642
5.562
6.855
8.591
10.64
15.32
15.94
16.01
Setting example of the output power limit value
* When it is used this function as output power limit, please use the high-precision resistance such as the metal film
resistor when precision of the electricity value is necessary.
* The value of external PLC resistance R1 please connects more than 3kΩ.
* When it is changed a value of external PLC resistance R1, please turn off an amplifier.
No.A1408-17/24
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