Image shown is for reference only. Actual package may vary. Refer to the product data sheet for package details.
U-QFN3030-12-3D.png
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
Image shown is for reference only. Actual package may vary. Refer to the product data sheet for package details.
W-QFN2020-12.png27VPP Piezo Sounder Driver
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The PAM8904E is a piezo sounder driver with integrated charge pump boost converter. The PAM8904E is capable of driving a ceramic/piezo sounder with 27VPP from a 4.5V power supply. The charge pump can operate in either 1x, 2x or 3x mode.
The boost converter operates at a fixed frequency of 100kHz and provides a 3X VIN output with a minimum number of external components.
The PAM8904E can drive up to 47nF loading. Diodes Incorporated’s unique drive technology provides a small inrush current, low EMI and high efficiency. The PAM8904E includes built-in automatic shutdown and wake-up that guarantees longer battery life. The PAM8904E features thermal shutdown, overcurrent protection, overvoltage protection and undervoltage lockout.
The PAM8904E is available in U-QFN3030-16 (Type B), U-QFN3030- 12 (Type A), W-QFN2020-12 (Type US) and U-QFN2020-12 (Type UX) packages.
| Minimum VDD (V) | 1.5 |
|---|---|
| Compliance (Only Automotive supports PPAP) | Standard |
| AEC Qualified | No |
| Maximum VDD (V) | 5.5 V |
| IQ (mA) | 0.22 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 |
