Datasheet PAM8907 (Diodes)

PAM8907 31VPP OUTPUT PIEZO SOUNDER DRIVER WITH BOOST CONVERTER Description Pin 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
IO T
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
N A
protection and under-voltage-lockout protection to assure safe
V
system operation.
Typical Applications Circuit D A
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 or your local Diodes representative. 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. PAM8907 1 of 10 May 2021 Document number: DS43314 Rev. 2 - 2
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