MAS6253 is a piezo driver IC in a small DFN-10 2x2x0.5 mm package. The heart of the IC is a high efficiency synchronous boost DC/DC converter requiring only a small 1.0 μH or  2.2μH inductor. The DC/DC converter offers regulated output which is adjustable up to 20.0V in a very wide supply voltage range from 1.6V to 5.5V.

The piezo driver has bridge-tied load (BTL) output stage which is capable of producing very high sound pressure level (SPL) audio by driving up to 40Vpp signal. The piezo driver supports external drive method for producing multi-tone sound. The ouput voltage can be adjusted either in pin control mode or in I2C bus control mode.

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