18VPP Output Piezo Sounder Driver
PAM8904E
18VPP OUTPUT PIEZO SOUNDER DRIVER Description Pin Assignments The PAM8904E is a piezo sounder driver with integrated charge
pump boost converter. The PAM8904E is capable of driving a
ceramic/piezo sounder with 27VPP from a 4.5V power supply. The (Top View) 16 The boost converter operates at a fixed frequency of 100kHz and
provides a 3X VIN output with a minimum number of external NEW PRODUCT NC VIN CP2 VOUT Pin 1 charge pump can operate in either 1x, 2x or 3x mode. 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. 1 12 NC 2 11 CP1 DIN 3 10 CN2 NC 4 9 VO1 Integrated Boost Converter Generates up to 13.5V Supply
Input Signal 20Hz to 300kHz
No Voltage Cross Output at Shutdown Mode
Low Current Consumption
Automatic Standby and Wake-up Control
Available in Space Saving Packages U-QFN3030-16 (Type B),
U-QFN3030-12 (Type A) and W-QFN2020-12 (Type US)
Packages
Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
Halogen and Antimony Free. “Green” Device (Note 3) Notes: 6 8 7 CN1 GND VO2 NC U-QFN3030-16 (Type B)
(Top View)
VIN CP2 VOUT Pin 1 12 Features 13 EN2 5 The PAM8904E is available in U-QFN3030-16 (Type B), U-QFN303012 (Type A) and W-QFN2020-12 (Type US) packages. Supply Voltage Range from 1.5V to 5.5V
18VPP Output from a 3V Supply 14 EN1 The PAM8904E includes built-in automatic shutdown and wake up
that guarantees longer battery life. The PAM8904E features thermal
shutdown, over current protection, over voltage protection and under
voltage lock-out. 15 11 10 EN1 1 9 CP1 EN2 2 8 CN2 DIN 3 7 VO1 4 5 6 CN1 GND VO2 U-QFN3030-12 (Type A)/W-QFN2020-12 (Type US) Applications Health Care Systems
Alarm Clocks …
