PAM8904Q

Document number: DS38977 Rev. 1 - 2

1 of 11

www.diodes.com

June 2016

© Diodes Incorporated

PAM8904Q

AUTOMOTIVE 18VPP OUTPUT PEIZO SOUNDER DRIVER

Description

The PAM8904Q is a piezo sounder driver designed for driving a

ceramic/piezo sounder or speaker with 18Vpp from a 3V power

supply. A programmable charge pump boost converter allows the

The boost converter operates at a fixed frequency of 1.0MHz and

provides

a

9V

output

with a

minimum

number

of

external

components. PAMs unique drive technology ensures minimal inrush

current, low EMI and high efficiency.

To ensure maximum efficiency and battery life the PAM8904Q

includes an auto standby feature which puts the device in sleep mode

while there is no valid input signal. A forced shutdown is also

available to enable the IC only when required.

To help protect the IC and system the PAM8904Q includes

overtemperature shutdown, overcurrent and short circuit protection.

The PAM8904Q is available in a 16pin U-QFN3030 package.

Compliant supporting PPAPs.

Features



Supply voltage Range from 2.3V to 5V





Integrated Boost Converter Generates 9V Supply



Wide Input signal capability 20Hz to 300KHz



Low Current Consumption



Automatic Standby and Wake-up Control



Overtemperature Shutdown and Short-Circuit Protection



Available in Space Saving Packages 16pin QFN package with

Green Molding



Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)



Halogen and Antimony Free. “Green” Device (Note 3)



Qualified to AEC-Q100 Standards for High Reliability



AEC-Q100 Grade 2



PPAP Capable (Note 4)

Pin Assignments

(Top View)

NC

NC

1

GND

U-QFN3030-16L

Applications



Automotive Alarms



Dash Board Audio



GPS



Electric Vehicle Approach Warning



Automotive Security Device

Notes:

1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant.

2. See http://www.diodes.com/quality/lead_free.html 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.

4. Automotive products are AEC-Q100 qualified and are PPAP capable. Refer to http://www.diodes.com/quality/product_compliance_definitions/.