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MAX13301：4通道、汽车应用D类音频放大器

支持较宽的工作电压(6V至25.5V)范围，提供汽车诊断和抛负载保护

The MAX13301 combines four high-efficiency Class D amplifiers with integrated diagnostic hardware for reliable automotive audio systems, and delivers up to 80W at 10% THD+N per channel into 4Ω when operating from a 24V supply. The internal diagnostics evaluate each channel's output impedance to check for shorts across the outputs, to the battery, or to ground. The I²C interface allows the system to query critical device parameters such as device temperature and output clipping. The device is programmable to four different I²C addresses. The audio amplifiers feature single-ended analog inputs with a common negative input. The MAX13301 has a fixed gain of 26dB. The Class D amplifier has 10 programmable switching frequencies between 300kHz and 750kHz. The BTL outputs are protected against short circuits and thermal overload. The outputs can be configured as a 2-, 3-, or 4-channel amplifier. The device provides 50V load-dump protection, and is offered in the thermally enhanced, 48-pin TSSOP-EPR package operating over the -40°C to +125°C temperature range.

关键特性 High Output Power (10% THD+N) 2 x 160W into 2Ω at 24V 4 x 80W into 4Ω at 24V 2 Channels Can Be Paralleled Feedback After the Filter Improves THD+N Low Output Impedance High-Frequency Response Improved Damping of Complex Loads Enables Low-Cost Inductors 102dB SNR Low 0.04% THD+N 70dB PSRR On-Board Diagnostics Short-to-Battery/GND Open/Shorted Load Tweeter Detect Protection and Monitoring Functions: Short-Circuit Protection 50V Load-Dump Protection Programmable Clip Detection DC Offset Detection Open Battery/GND Tolerant Thermal-Overload Protection Thermal Warning Indication Four-Address I²C Control Interface Low-Power Shutdown Mode Up to 90.5% Efficiency -40°C to +125°C Ambient Operating Temperature 48-Pin TSSOP-EPR (Top Side Exposed Pad) Package AEC-Q100 Qualified

功能框图 产品应用 有源扬声器系统 汽车立体声系统 分立式放大模块 无线环绕系统 无线装置 后排座娱乐系统

关键参数

数据手册DataSheet

技术资料

• Diagnosing Automotive Faults with Class D Audio Amplifiers

质量和环境数据

• MAX13301.pdf

订购型号