PAM8904E

Description

The PAM8904E is a piezo sounder driver with integrated charge pump boost converter. The PAM8904E is capable of driving a ceramic/piezo sounder with 27V_PP from a 4.5V power supply. The charge pump can operate in either 1x, 2x or 3x mode.

The boost converter operates at a fixed frequency of 100kHz and provides a 3X V_IN output with a minimum number of external components.

The PAM8904E can drive up to 47nF loading. Diodes Incorporated’s unique drive technology provides a small inrush current, low EMI and high efficiency. The PAM8904E includes built-in automatic shutdown and wake-up that guarantees longer battery life. The PAM8904E features thermal shutdown, overcurrent protection, overvoltage protection and undervoltage lockout.

The PAM8904E is available in U-QFN3030-16 (Type B), U-QFN3030- 12 (Type A), W-QFN2020-12 (Type US) and U-QFN2020-12 (Type UX) packages.

Feature(s)

• Supply Voltage Range from 1.5V to 5.5V
• 18V_PP Output from a 3V Supply
• Integrated Boost Converter Generates up to 13.5V Supply
• Input Signal 20Hz to 300kHz
• No Voltage Cross Output in Shutdown Mode
• Low Current Consumption
• Automatic Standby and Wake-up Control
• Available in Space Saving U-QFN3030-16 (Type B), U-QFN3030-12 (Type A), W-QFN2020-12 (Type US) and U-QFN2020-12 (Type UX) Packages
• Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
• Halogen and Antimony Free. “Green” Device (Note 3)
• For automotive applications requiring specific change control (i.e. parts qualified to AEC-Q100/101/104/200, PPAP capable, and manufactured in IATF 16949 certified facilities), please contact us or your local Diodes representative. https://www.diodes.com/quality/product-definitions/

Application(s)

• Health care systems
• Alarm clocks
• Security devices
• Home appliances