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参数资料
| 型号： | TDA7498MV |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 音频／视频放大 |
| 英文描述： | 100 W, 1 CHANNEL, AUDIO AMPLIFIER, PDSO36 |
| 封装： | ROHS COMPLIANT, SSOP-36 |
| 文件页数： | 16/27页 |
| 文件大小： | 779K |
| 代理商： | TDA7498MV |
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TDA7498MV
Applications information
Doc ID 16505 Rev 2
23/27
5.7
Protection function
The TDA7498MV is fully protected against overvoltages, undervoltages, overcurrents and
thermal overloads as explained here.
Overvoltage protection (OVP)
page 9 the overvoltage protection is activated which forces the outputs to the
high-impedance state. When the supply voltage falls back to within the operating range the
device restarts.
Undervoltage protection (UVP)
specifications on page 9 the undervoltage protection is activated which forces the outputs to
the high-impedance state. When the supply voltage recovers to within the operating range
the device restarts.
Overcurrent protection (OCP)
page 9 the overcurrent protection is activated which forces the outputs to the
high-impedance state. Periodically, the device attempts to restart. If the overcurrent
condition is still present then the OCP remains active. The restart time, TOC, is determined
by the R-C components connected to pin STBY.
Thermal protection (OTP)
If the junction temperature, Tj, reaches 145 °C (nominally), the device goes to mute mode
and the positive and negative PWM outputs are forced to 50% duty cycle. If the junction
device shuts down and the output is forced to the high-impedance state. When the device
cools sufficiently the device restarts.
5.8
Diagnostic output
The output pin DIAG is an open drain transistor. When any protection is activated it switches
to the high-impedance state. The pin can be connected to a power supply (< 39 V) by a pull-
up resistor whose value is limited by the maximum sinking current (200 A) of the pin.
Figure 25.
Behavior of pin DIAG for various protection conditions
TDA7498MV
Protection logic
R1
DIAG
VDD
Overcurrent
protection
Restart
OV, UV, OT
protection
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相关代理商/技术参数 |
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| TDA7498MV13TR | 制造商:ST 功能描述:100-watt mono BTL class-D audio amplifier |
| TDA7498MVTR | 功能描述:音频放大器 80W and 80W Dual BTL Class-D Audio Amp 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 |
| TDA7498TR | 功能描述:音频放大器 100W +100W Dual BTL Class-D 4-Select dB 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 |
| TDA7499 | 功能描述:音频放大器 6W Stereo Amp w/Mute 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 |
| TDA7499SA | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:6W+6W STEREO AMPLIFIER WITH MUTE & ST-B |
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