4-Channel, Automotive Class D Audio Amplifier

Industry's Only 6V, Quad 50W, Class D Audio Amp with Exceptional THD (0.05%)

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The MAX13300/MAX13302 combine four high-efficiency Class D amplifiers with integrated diagnostic hardware for reliable automotive audio systems. The MAX13300/ MAX13302 deliver up to 50W at 10% THD+N per channel into 2Ω when operating from a 14.4V 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 devices are programmable to four different I²C addresses.

The audio amplifiers feature single-ended analog inputs with a common negative input. Three gain settings are internally adjustable through the I²C interface to 13dB, 21.6dB, and 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. All the devices provide 50V load-dump protection, and are offered in the thermally enhanced, 48-pin TSSOP-EPR package operating over the -40°C to +125°C temperature range.

Key Features

  • High Output Power (10% THD+N)
    • 2 x 100W into 1Ω at 14.4V
    • 4 x 50W into 2Ω at 14.4V
    • 4 x 30W into 4Ω at 14.4V
  • 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
  • 100dB 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


  • Active Loudspeaker Systems
  • Car Stereo
  • Discrete Amplifier Modules
  • Mobile Surround Systems
  • Radio Head Units
  • Rear-Seat Entertainment Units
Request Reliability Report for: MAX13300 
Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C   Material Composition  

Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

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