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參數(shù)資料
| 型號(hào)： | LA4625 |
| 廠商： | Sanyo Electric Co.,Ltd. |
| 元件分類： | 音頻放大器 |
| 英文描述： | Two-Channel 13.5 W BTL Audio Power Amplifier |
| 中文描述： | 雙通道13.5糯橋接音頻功率放大器 |
| 文件頁(yè)數(shù)： | 5/8頁(yè) |
| 文件大?。?/td> | 99K |
| 代理商： | LA4625 |
No. 6631-5/8
LA4625
3. Impulse noise improvements
While the LA4625 achieves a low level of impulse noise, if even further reductions in impulse noise at power on/off
(and when switching into or out of standby mode) a 0.47 μF capacitor may be inserted between pin 7 and the PRE
GND pin (pin 3). (Pin 7 is the output amplifier bias pin. Since the ability to withstand shorting the output pins to
V
CC
or ground is reduced for supply voltages over 16 V if the pin 7 capacitance is large, we recommend a value of
0.47 μF or lower for this capacitor.)
4. Protection circuits
Due to the system structure of the protection circuit for shorts to V
CC
or ground, if there is a DC resistance between
the amplifier output pins and ground, the protection circuit may operate when power is first applied and the
amplifier may fail to turn on. The basic design approach we recommend is not to adopt any designs in which there is
a DC resistance between the amplifier outputs and ground.
The LA4625 includes a built-in thermal protection circuit to prevent the IC from being damaged or destroyed if
abnormally high temperatures occur. This thermal protection circuit gradually reduces the output if the IC junction
temperature (Tj) reaches the range 170 to 180°C due to inadequate heat sinking or other problem. If the temperature
falls, the amplifier will restart automatically.
The LA4625 also includes other protection circuits. Use of these circuits also requires care during end product
design and testing.
5. Other notes
The LA4625 is a BTL power amplifier. When testing this device, the ground systems for the test equipment
connected to IC inputs, and that for the test equipment connected to IC outputs, must be isolated. Do not use a
common ground.
Printed Circuit Pattern
+
+
+
R2
R1
C5
GND
VCC
C2
C1
1
LA4625
14
C6
R3
C7
ILA00349
GND
GND
+OUT1
R5
C9
+OUT2
R4
C8
--OUT2
--OUT1
IN1
+
C4
+
C3
+
C10
IN2
STB
(copper foil side)
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PDF描述 |
|---|---|
| LA4627 | Two-Channel Audio Frequency Power Amplifier |
| LA4628 | Two-Channel 20 W BTL Audio Power Amplifier |
| LA4629 | Two-Channel Audio Frequency Power Amplifier |
| LA4630N | 9V/12V 3-Dimension Power IC for Radio Cassette Recorders |
| LA4635 | 2-Channel BTL AF Power Amplifier |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LA4625_08 | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:2-channel 13.5W BTL Audio Power Amplifier |
| LA4625_10 | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:2-channel 13.5W BTL Audio Power Amplifier |
| LA4625-E | 功能描述:音頻放大器 2-CH POWER AMPLIFIER RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| LA4625-P-E | 功能描述:音頻放大器 RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| LA4627 | 制造商:Panasonic Industrial Company 功能描述:IC |
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