MAX4297EAG+ [Analog Devices]

The MAX4295/MAX4297 are high-efficiency, switch-mode (Class-D) audio power amplifiers designed for portable multimedia and general-purpose audio applications. They operate from a single +2.7V to +5.5V supply, delivering up to 2W per channel with >85% efficiency. Key features include low THD+N (0.4%), programmable PWM frequency (125kHz to 1MHz), low quiescent current, clickless power-up/shutdown, 1A current limit, thermal protection, and under-voltage lockout. The devices reduce external component count with internal high-speed power-MOS transistors and bridge-tied load (BTL) configuration, eliminating output isolation capacitors.