Diodes Incorporated — Analog and discrete power solutions
U QFN3030 12 Type A

Image shown is for reference only. Actual package may vary. Refer to the product data sheet for package details.

U-QFN3030-12-3D.png
U QFN3030 16 Type B

Image shown is for reference only. Actual package may vary. Refer to the product data sheet for package details.

U-QFN3030-16-Type-B.png
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PAM8904

18VPP Piezo Sounder Driver

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Description

The PAM8904 is a piezo sounder driver with integrated charge pump boost converter. The PAM8904 is capable of driving a ceramic/piezo sounder with 24VPP from a 5.5V power supply. The charge pump can operate in a 1x, 2x, or 3x mode.

The boost converter operates at a fixed frequency of 1.0MHz and provides a 12V output with a minimum number of external components. The PAM8904 can drive up to 15nF loading. Diodes Incorporated’s unique drive technology provides a small inrush current, low EMI and high efficiency.

The PAM8904 includes built-in automatic shutdown and wake up that guarantees longer battery life. The PAM8904 features thermal shutdown, overcurrent protection, overvoltage protection and undervoltage lock-out.

The PAM8904 is available in a 16-pin U-QFN3030-16 (Type B) package, a 12-pin U-QFN3030-12 (Type A) package, or a 12-pin UQFN2020-12 (Type UX) package.

Feature(s)

  • Supply Voltage Range from 1.8V to 5.5V
  • 18VPP Output from a 3V Supply
  • Integrated Boost Converter Generates Up to 12V Supply
  • No Voltage Cross Output at Shutdown Mode
  • Low Current Consumption
  • Automatic Standby and Wake-Up Control
  • Available in Space-Saving Packages:
    • 16-Pin U-QFN3030-16 (Type B)
    • 12-Pin U-QFN3030-12 (Type A)
    • 12-Pin U-QFN2020-12 (Type UX)
  • Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
  • Halogen and Antimony Free. “Green” Device (Note 3)
  • An Automotive-Compliant Part is Available Under Separate Datasheet (PAM8904Q)

Application(s)

  • Health care systems
  • Alarm clocks
  • Security devices
  • Home appliances

Product Specifications

Product Parameters

Minimum VDD (V) 2.3
Compliance (Only Automotive supports PPAP) Standard
AEC Qualified No
Maximum VDD (V) 5.5 V
IQ (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

Evaluation Boards and User Guides

Recommended Soldering Techniques

TN1.pdf