DESCRIPTION

· The PAM8904E is a piezo sounder driver with an integrated charge pump boost converter.

· It can drive a ceramic/piezo sounder with 27VPP from a 4.5V power supply.

· The charge pump operates in 1x, 2x, or 3x mode at a fixed frequency of 100kHz.

· It supports up to 47nF loading and includes features like automatic shutdown, thermal shutdown, over current protection, over voltage protection, and under voltage lockout.

· Available in U-QFN3030-16 (Type B), U-QFN3030-12 (Type A), W-QFN2020-12 (Type US), and U-QFN2020-12 (Type UX) packages.

FEATURES

· Supply voltage range: 1.5V to 5.5V.

· 18VPP output from a 3V supply.

· Integrated boost converter generates up to 13.5V supply.

· Input signal frequency: 20Hz to 300kHz.

· Low current consumption and no voltage cross output in shutdown mode.

· Automatic standby and wake-up control for extended battery life.

· Lead-free, RoHS compliant, and halogen/antimony-free "Green" device.

APPLICATIONS

· Healthcare systems.

· Alarm clocks.

· Security devices.

· Home appliances.