PAM8907SB10-7

Overview

The PAM8907SB10-7 is a piezo sounder driver with an integrated boost converter, packaged in U-QFN2020-10. It drives ceramic/piezo sounders with up to 31VPP output from a 1.8V to 5.5V supply. The internal boost converter operates at 1.8MHz and provides selectable outputs of 11V or 15.6V via the VSET pin. Shutdown current is less than 1μA.

Feature Summary

• Integrated boost converter capable of driving piezo sounders with up to 31VPP output
• Selectable boost voltage output (11V or 15.6V) controlled by the VSET pin
• Automatic shutdown and wake-up control for extended battery life
• Built-in thermal shutdown, overcurrent protection, and undervoltage lockout

Applications

• Bluetooth or wireless location trackers
• Air humidifier or ultrasonic related piezo driver applications
• Security devices and home appliances
• Haptic feedback systems

Procurement Notes

Verify the specific ordering suffix SB10-7 corresponds to the U-QFN2020-10 package and 3,000-unit tape and reel quantity. Confirm that the VSET pin configuration matches the required 11V or 15.6V boost output for your design. Ensure component authenticity through authorized Diodes Incorporated channels.

Selection Notes

Select this component when high sound pressure level is required from a small form factor. The device supports low-voltage operation starting at 1.8V. Consider the U-QFN2020-10 package dimensions for PCB layout constraints. Verify external inductor and capacitor values align with the recommended application circuit for optimal efficiency.

Part Context

This part belongs to the PAM8907 series of piezoelectric horn drivers manufactured by Diodes Incorporated. It is designed specifically for battery-operated tracker and alarm applications requiring loud output sound with low quiescent current. The device integrates power switches and control logic to minimize external component count.

Replacement Considerations

PAM8904EJER: Charge pump based driver with different output characteristics and package.

FAQ

How is the boost converter output voltage selected?

The boost converter output voltage is set by the VSET pin. A TTL Low signal selects 11V, while a TTL High signal selects 15.6V.

What protection features are included in the PAM8907?

The device includes thermal shutdown protection, overcurrent protection, overvoltage protection, and undervoltage lockout (UVLO) to ensure safe system operation.