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PAM8904Q

Automotive 18VPP output Peizo sounder driver

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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 PAM8904Q Vout to operate in 1X, 2X and 3X mode.

The boost converter operates at a fixed frequency of 1.0MHz and provides a 9V output with a minimum number of external components and can drive loads of up to 15nF. PAM’s unique drive technology ensures minimal inrush current, low EMI and high efficiency.

Feature(s)

Supply voltage Range From 2.3V to 5V
18VPP Output from a 3V Supply
Integrated Boost Converter Generates 9V Supply
Wide Input signal capability 20 Hz to 300KHz
No Voltage Cross Output At Shutdown Mode
Low Current Consumption
Automatic Standby and Wake-up Control
Over Temperature Shut Down and Short Circuit Protection
Automotive AECQ Grade 2
Available in Space Saving Packages 16pin QFN package

Application(s)

Automotive Alarms
Dash Board Audio
GPS
Health Care System
Alarm Clock
Security Device
Home Appliance

Product Specifications

Product Parameters

Minimum VDD (V)	2.3
Compliance (Only Automotive supports PPAP)	Automotive
AEC Qualified	Yes
Maximum V_DD (V)	5.5 V
I_{Q (mA)}	1 mA
Power/CH (W) @ THD=10%	N/A
Power/CH (W) @ THD=1%	N/A
Mono or Stereo	Mono
BTL	Yes
SE	No
Class-D or AB	D
Power Limit	No
Anti-Sat	No
Headphone Out	No
Efficiency (%)	N/A %
Volume/ Gain	3- Step
Gain Min	N/A dB
Gain Max	N/A dB
SNR	N/A dB
PSRR	N/A dB
Special Features	Boost Converter Built-in

Technical Documents

Recommended Soldering Techniques

TN1.pdf