The SSM2250 features an audio amplifier capable of delivering 1.5 W of low distortion power into a mono 4 bridge-tied load (BTL) or 2 x 90 mW into stereo 32 single-ended load (SE) headphones. Both amplifiers provide rail-to-rail outputs for maximum dynamic range from a single supply. The balanced output provides maximum output from a 5 V supply and eliminates the need for a coupling capacitor. The SSM2250 can automatically switch between an internal mono speaker and external headphones. The device can run from a single supply, ranging from 2.7 V to 6 V, with an active supply current of 9 mA typical. The ability to shut down the amplifiers (60 A shutdown current) makes the SSM2250 an ideal speaker amplifier for battery-powered applications.