Описание
The PAM8904 is a piezo sounder driver with integrated a charge pump boost converter. The PAM8904 is capable for driving a ceramic/piezo sounder with 18Vpp from a 3V power supply. The charge pump can operate in either of a 1X, 2X and 3X mode. The boost converter operates at a fixed frequency of 1.0MHz and provides a 9V output with a minimum number of external components. The PAM8904 can drive up to 15nF loading. PAM unique drive technology provides small inrush current, low EMI and high efficiency.PAM8904 built-in automatic shutdown and wake up that guarantees longer battery life.PAM8904 features thermal shutdown, over current protection, over voltage protection and under voltage lock-out.The PAM8904 is available in a 16pin U-QFN3030 package.
- Supply voltage Range From 2.3V to 5.5V
- 18VPP Output from a 3V Supply
- Integrated Boost Converter Generates 9V Supply
- Input signal 20 Hz to 300KHz
- No Voltage Cross Output At Shutdown Mode
- Low Current Consumption
- Automatic Standby and Wake-up Control
- Available in Space Saving Packages 16pin QFN package
