PAM8904JER

PAM8904JER is a piezo sounder driver with an integrated charge pump boost converter. The PAM8904 is capable of driving a ceramic/piezo sounder with 24VPP from a 5.5V power supply. The boost converter operates at a fixed frequency of 1.0MHz and provides a 12V output with a minimum number of external components. The PAM8904 can drive up to 15nF loading. Diodes Incorporated’s unique drive technology provides a small inrush current, low EMI and high efficiency. The PAM8904 includes built-in automatic shutdown and wake-up that guarantees longer battery life. The PAM8904 features thermal shutdown, overcurrent protection, overvoltage protection and undervoltage lock-out. Applications include health care systems, alarm clocks, security devices, and home appliances.

• Supply voltage range from 1.8V to 5.5V
• 18VPP output from a 3V supply
• Integrated boost converter generates up to 12V supply
• No voltage cross output at shutdown mode
• Low current consumption, automatic standby and wake-up control
• Shutdown current is 1µA max at DIN = 0V
• Shutdown delay time is 42ms typ at DIN = H- > L
• Output short-circuit current is 40mA typ
• Operating free-air temperature range from -40 to +85°C
• U-QFN3030-16 (type B) package