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参数资料
| 型号： | LV49157V |
| 元件分类： | 音频／视频放大 |
| 英文描述： | 15 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO44 |
| 封装： | 0.275 INCH, SSOP-44 |
| 文件页数： | 9/30页 |
| 文件大小： | 1029K |
| 代理商： | LV49157V |
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LV49157V
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.
MAX. Power
Half Power
Min. Power
GND
PLC
R1
5
13
LV49157V
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%
0
14
16
10
12
8
4
6
2
18
010
8
6
4
212
14
1
R1–k
Ω
R1 [k
Ω]
Po@10% [W]
3.0
0.694
3.6
1.073
4.7
1.982
6.2
3.642
7.5
5.562
8.2
6.855
9.1
8.591
10
10.64
13
15.32
15
15.94
20
16.01
VD = 15V
RL = 8Ω
fin = 1kHz
THD + N = 10%
2ch-Drive
AES17
–
W
@THD
+
N
=
10%
P
O
6
18
20
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 3k
Ω.
* When it is changed a value of external PLC resistance R1, please turn off an amplifier.
No.A1567-17/30
相关PDF资料 |
PDF描述 |
|---|---|
| LV49157V | 15 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO44 |
| LV4920H | 15 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO36 |
| LV4920H | 15 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO36 |
| LV49821VH | 1.4 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO13 |
| LV4985V | 1.2 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO14 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LV49157V-MPB-H | 功能描述:音频放大器 RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
| LV49157V-TLM-H | 功能描述:音频放大器 AUDIO POWER AMPLIFIER RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
| LV4920H | 制造商:SANYO 制造商全称:Sanyo Semicon Device 功能描述:Bi-CMOS IC Class-D Audio Power Amplifier Power Cell BTL 15W×2CH, 10W×2CH |
| LV4920H-MPB-E | 制造商:ON Semiconductor 功能描述:CLASS-D POWER AMPLIFIER - Ammo Pack |
| LV4920H-TLM-E | 制造商:ON Semiconductor 功能描述:CLASS-D POWER AMPLIFIER - Tape and Reel |
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