参数资料
| 型号： | LV47011P-E |
| 厂商： | ON Semiconductor |
| 文件页数： | 6/10页 |
| 文件大小： | 0K |
| 描述： | IC AUDIO AMP BTL 50W 4CH HZIP25 |
| 标准包装： | 15 |
| 类型： | AB 类 |
| 输出类型： | 4-通道（四路） |
| 在某负载时最大输出功率 x 通道数量： | 29W x 4 @ 4 欧姆 |
| 电源电压： | 8 V ~ 16 V |
| 特点： | 静音，短路和热保护 |
| 安装类型： | * |
| 供应商设备封装： | * |
| 封装/外壳： | * |
| 包装： | * |
LV47011P
No.A1838-5/10
4. Self-diagnostics function (pin 25)
By detecting the unusual state of the IC, the signal is output to the pin 25.
Also, by controlling the standby switch after the signal of the pin 25 is detected by the microcomputer, the burnout of
the speaker can be prevented.
(1) Shorting to VCC/Shorting to ground : The pin 25 becomes the low level.
(2) Load shorting
: The pin 25 is alternated between the low level and the high level
according to the output signal.
(3) Output offset detection
: when the output offset voltage exceeds the detection threshold voltage,
the pin 25 becomes the low level.
* Note: The output offset abnormality is thought of as the leakage current of the input capacitor.
In addition, the pin 25 has become the NPN open collector output (active low).
The pin 25 must be left open when this function is not used.
5. Sound quality (low frequencies)
By varying the value of input capacitor, low-frequency characteristic can be improved.
However, it is concerned the shock noise. Please confirm in each set when the capacitance value varies.
6. Pop noise
For pop noise prevention, it is recommended to use the muting function at the same time.
Please turn on the muting function simultaneously with power supply on when the amplifier is turned on. Next, turn
off the muting function after the output DC potential stabilization.
When the amplifier is turn off, turn off the power supply after turning on the muting function.
7. Oscillation stability
Pay due attention on the following points because parasitic oscillation may occur due to effects of the capacity load,
board layout, etc.
(1) Capacity load
When the capacitor is to be inserted between each output pin and GND so as to prevent electric mirror noise, select
the capacitance of maximum 1500pF. (Conditions : Our recommended board, RL = 4)
(2) Board layout
Provide the VCC capacitor of 0.1F in the position nearest to IC.
PREGND must be independently wired and connected to the GND point that is as stable as possible, such as the
minus pin of the 2200
F VCC capacitor.
In case of occurrence of parasitic oscillation, any one of following parts may be added as a countermeasure.
Note that the optimum capacitance must be checked for each set in the mounted state.
Series connection of CR (0.1F and 2.2) between BTL outputs
Series connection of CR(0.1F and 2.2) between each output pin and GND.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LV47011PGEVB | 制造商:ON Semiconductor 功能描述:EVABOARD FOR LV47011P - Boxed Product (Development Kits) |
| LV47017P | 制造商:SANYO 制造商全称:Sanyo Semicon Device 功能描述:For Car Audio Systems 4-Channel BTL Power Amplifier |
| LV47017P_12 | 制造商:SANYO 制造商全称:Sanyo Semicon Device 功能描述:4-Channel BTL Power Amplifier |
| LV47017P-E | 功能描述:音频放大器 CAR AUDIO POWER SUPPLY 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 |
| LV47022P | 制造商:SANYO 制造商全称:Sanyo Semicon Device 功能描述:Monolithic Linear IC For Car Audio Systems 4-Channel BTL Power Amplifier |
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