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参数资料
| 型号： | TDA7245 |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 音频／视频放大 |
| 英文描述： | 5 W, 1 CHANNEL, AUDIO AMPLIFIER, PDIP18 |
| 封装： | POWER, DIP-18 |
| 文件页数： | 11/11页 |
| 文件大小： | 2697K |
| 代理商： | TDA7245 |
THERMAL SHUTDOWN
The presence of a thermal limiting circuit offers
the following advantages:
1)An overload on the output (even if it is perma-
nent), or an above limit ambient temperature
can be easily tolerated since the Tj cannot be
higher than 150
°C.
2)The heatsink can have a smaller factor of
safety compared with that of a conventional
circuit. There is no possibility of device dam-
age due to high junction temperature.
If for any reason, the junction temperature in-
crease up to 150
°C, the thermal shutdown
simply reduces the power dissipation and the
current consumption.
The maximum allowable power dissipation de-
pends upon the junction-ambient thermal resis-
tance. Fig. 21 shows this dissipable power as a
function of ambient temperature for different ther-
mal resistance.
Figure 21: Maximum Allowable Power
Dissipation vs. Ambient Temperature
Figure 22: Example of Heatsink using PC Board
Copper (l = 65mm)
MOUNTING INSTRUCTIONS
The TDA7245 is assembled in the POWERDIP, in
which 9 pins (from 10 to 18) are attached to the
frame and remove the heat produced by the chip.
Figure 22 shows a PC Board copper area used
as a Heatsink (l = 65mm). The Thermal Resis-
tance Junction-Ambient is 35
°C.
TDA7245
9/11
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TDA7245A | 功能描述:音频放大器 6W Audio 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 |
| TDA7250 | 功能描述:音频 DSP 60W Dual Audio Drvr RoHS:否 制造商:Texas Instruments 工作电源电压: 电源电流: 工作温度范围: 安装风格: 封装 / 箱体: 封装:Tube |
| TDA7253 | 功能描述:音频放大器 8W Audio 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 |
| TDA7253L | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:6W AMPLIFIER WITH MUTING |
| TDA7255 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:22W FRONT REAR OR BRIDGE FULLY PROTECTED CAR RADIO AMPLIFIER |
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