20W Class D audio amp in a reduced-outline package

November 01, 2013 // By Graham Prophet
Diodes Inc. now has a 20W mono Class D audio amplifier in the space-saving SOP16 exposed pad, surface mount package. Operating at an efficiency of up 95%, the PAM8320 eliminates the need for an external heatsink, saving system space and reducing BOM cost.

The amplifier’s low impedance drive capability enables it to deliver 20W into a 4Ω bridge-tied-load speaker, making it suitable for a variety of high power, small enclosure speakers in wireless headphones, PCs and docking station products. PAM8320’s 4.5V to 15V supply range also means it will cater equally well for battery cell and mains-driven consumer audio systems.

To help increase product reliability, the amplifier features a suite of safeguard circuitry, comprising over-voltage and under-voltage lockout protection, thermal and short circuit protection with auto recovery, as well as anti-pop circuitry to keep the speaker safe during power-on and power-off sequences.

The amplifier is priced at $0.50 (10,000).

Diodes; www.diodes.com