Diodes Inc's Enhanced Sounder Driver Serves Smaller Smart Sensors and Wearables

December 9, 2019 Alix Paultre


Diodes Incorporated released an enhanced version of its sounder driver for small and portable devices. The PAM8904E can support both single-ended and differential output modes with minimal external components. The device features an input voltage supply from 1.5V to 5.5V, and a shutdown current consumption within 1µA. 

The sounder also accepts an input signal between 20Hz to 300kHz. Features include a charge-pump boost converter that operates in 1x, 2x, and 3x modes. This enables the PAM8904E to generate an output voltage up to 18V peak-to-peak from a 3V supply voltage, or 27Vp-p from a 4.5V supply.

The enhanced option can now drive a sounder load up to 47nF, and offers thermal shutdown, overcurrent protection, and short-circuit protection, as well as an automatic shutdown and wake function that can help maximize the operational lifetime of battery-powered devices.

The PAM8904EGPR is available in the W-QFN2020-12 Type A package, which measures 2.00mm × 2.00mm wide × 0.80mm high. Other packaging options include U-QFN3030-12 Type A (PAM8904EJPR) and U-QFN3030-16 (PAM8904EJER). Pricing starts at $0.30 in 1000 piece quantities.

www.diodes.com

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