3 V Headphone Amplifier

Many new devices require a headphone connection, but due to the high level of integration and miniaturisation there is usually little room left. The low supply voltage and/or battery voltage also causes problems. If no special techniques are used, the output power and headroom are severely limited.
The MAX4410 made by Maxim overcomes these problems not just by virtue of its small size, but also by including an internal supply inverter (charge-pump).