PAM890731VPP OUTPUT PIEZO SOUNDER DRIVER WITH BOOST CONVERTERDescriptionPin Assignments The PAM8907 is a piezoelectric horn driver with built-in boost U-QFN2020-10 converter, capable of driving a ceramic/piezo sounder with up to VCC 31VPP output. With integrated boost converter, the PAM8907 can 1 provide an optimized solution with higher Sound Pressure Level GND 2 10 VIN (SPL) for louder output sound, lower quiescent current for longer standby time, and auto turn-on/off feature for extended operating BOOT 3 9 VSET
lifetime. The PAM8907 provides clear benefits for battery-operated SW DIN N 4 8 tracker, piezoelectric horn or alarm related applications. VOUT 5 7 OUTP IOT 6 The PAM8907 integrates a boost converter that operates at a typical A OUTN frequency of 1.8MHz. With integrated boost converter and unique M(Top View) piezo sounder driver technology, the PAM8907 provides small inrush R current, low EMI and yet highly efficient system performance. O F PAM8907 Boost converter output can be set to either 11V or 15.6V Applications with minimum external components for various application usages. IN Bluetooth or Wireless Location Tracker D The PAM8907 has built-in automatic shutdown and wake-up Air Humidifier or Ultrasonic Related Piezo Driver Application E functions for longer operating lifetime requirement. It also features Security Devices, Home Appliances C thermal shutdown protection, over-current protection, over-voltage Haptic Feedback NA protection and under-voltage-lockout protection to assure safe V system operation. Typical Applications CircuitDA The PAM8907 is available in U-QFN2020-10 package. Features 1.0mH 1.8V to 5.5V Option Supply Voltage Range from 1.8V to 5.5V 0.1mF 10mF 1mF Intergraded Boost Converter VOUT = 11V or 15.6V VIN BOOT SW Drive Piezo Sounder with up to 31VPP 10 3 4 High-Speed Driver Designed with Very Short Turn-On/Turn-Off VOUT VCC 5 No Voltage Cross Output at Shutdown Mode 1 1mF 1mF High Impendence Output at Shutdown Mode Low Current Consumption, with Shutdown Current < 1μA Automatic Shutdown and Wake-Up Control VO=15.6V PAM8907 Available in Space-Saving U-QFN2020-10 package VO=11V VSET OUTP 9 7 Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)Halogen and Antimony Free. “Green” Device (Note 3) DIN OUTN For automotive applications requiring specific change 8 6 PWM input control (i.e. parts qualified to AEC-Q100/101/200, PPAP 2 capable, and manufactured in IATF 16949 certified GND facilities), please contact us oryour local Diodesrepresentative.https://www.diodes.com/quality/product-definitions/ Note: Schottky diode is optional. If added, it can save 20% of power consumption. Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS), 2011/65/EU (RoHS 2) & 2015/863/EU (RoHS 3) compliant. 2. See https://www.diodes.com/quality/lead-free/ for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green" and Lead-free. 3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and <1000ppm antimony compounds.