Status
Future Product
Description
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.
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Data Sheet
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