Mono/stereo 2w Switch-mode (class-d) Audio Power Amplifiers Integrated Products

The MAX4295 MAX4297 mono/stereo, switch-mode (Class-D) Audio Power Amplifiers operate from a single +2.7V to +5.5V supply. They have >85% efficiency and are capable of delivering 2W continuous power to a 4 load, making them ideal for portable Multimedia and general-purpose high-power Audio applications. The MAX4295 MAX4297 feature a total harmonic distor- tion plus noise (THD+N) of 0.4% (fOSC = 125kHz), low quiescent current of 2.8mA MAX4295 or 4.6mA MAX4297 , high efficiency, and clickless power-up and shutdown. The SHDN input disables the device and lim- its supply current to <1.5A MAX4295 or <2.3A MAX4297 . Other features include a 1A current limit, thermal protection, and under-voltage lockout. The MAX4295 (mono) and MAX4297 (stereo) reduce the number of required external components. Both devices have internal high-speed power-MOS transis- tors, allowing operation as bridge-tied load (BTL) ampli- fiers. The BTL configuration eliminates the need for isolation capacitors on the output. The frequency-selec- table pulse-width Modulator (PWM) allows the user to optimize the size and cost of the output Filter The MAX4295 is offered in a space-saving 16-pin QSOP package, and the MAX4297 is offered in a com- pact 24-pin SSOP package. By Maxim Integrated Products