Description
The DIODES™ PAM8906 is a piezoelectric sounder driver with builtin
boost converter, capable of driving a piezo sounder with up to
36VPP output. With integrated boost converter, the PAM8906 can
provide an optimized solution with higher Sound Pressure Level
(SPL) for louder output sound, and lower quiescent current along
with auto turn-on/off feature for extended battery runtime. PAM8906
provides clear benefits for battery-operated piezoelectric sounder or
alarm related applications.
With the integrated boost converter and unique piezo sounder driver
technology, PAM8906 provides small inrush current, low EMI and yet
delivers high system efficiency. The integrated boost converter
switches at a fixed frequency of 1.8MHz and as a result, it can
operate with a small 0.47μH inductor.
The PAM8906 comes in three different Output Voltage (VOUT)
options: 10V, 12V, and 18V.
The PAM8906 can operate with an external PWM input or operate in
self-excitation mode (only 10V and 12V supported in this mode) for
various piezo sounder applications. It also features thermal shutdown
protection, over-current protection, over-voltage protection and
under-voltage-lockout protection to ensure safe system operation.
The PAM8906 is available in MSOP-10 package for smaller PCB
footprint and higher SMT yield.

Features
 Supply Voltage Range from 2.1V to 5.5V
 Intergraded Boost Converter with VOUT = 10V, 12V or 18V
 Automatic Shutdown and Wake-Up Control
 Support External PWM Input or Self-Excitation Mode
 Low Operating Current, with Shutdown Current < 1μA
 High-Speed Driver Designed with Very Short Turn-On/Turn-Off
 High-Impendence Output in Shutdown Mode
 Available in Space-Saving MSOP-10 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/