PAM8904E Piezo Sounder Drivers

Diodes’ PAM8904E has a unique drive technology which ensures small inrush current, low EMI, and high efficiency

Diodes’ PAM8904E piezo sounder driver with an integrated charge-pump boost converter can drive a ceramic/piezo sounder with 27 V_PP from a 4.5 V power supply. It features a charge pump that boosts in either 1X, 2X, or 3X modes. The charge-pump boost converter operates at a fixed frequency of 100 kHz and provides a 9 V output with a minimal number of external components. The PAM8904E can drive up to 47 nF loading. Its unique drive technology ensures small inrush current, low EMI, and high efficiency. The built-in automatic shutdown and wake-up features guarantee longer battery life. The PAM8904E features thermal shutdown, overcurrent protection, overvoltage protection, and undervoltage lockout. With a small PCB footprint, it is available in a W-QFN2020-12, U-QFN303012, or U-QFN3030-16 package.