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General Description

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 4Ω load, making them ideal for portable multimedia and general-purpose high-power audio applications.

特性 Features

♦ +2.7V to +5.5V Single-Supply Operation

♦ 2W/Channel Output Power at 5V 0.7W/Channel Output Power at 3V

♦ 87 Efficiency (RL = 4Ω, PO = 2W, MAX4295)

♦ 0.4 THD+N (RL = 4Ω, fOSC = 125kHz)

♦ Logic-Programmable PWM Frequency Selection (125kHz, 250kHz, 500kHz, 1MHz)

♦ Low-Power Shutdown Mode

♦ Clickless Transitions Into and Out of Shutdown

♦ 1A Current Limit and Thermal Protection

♦ Available in Space-Saving Packages

    16-Pin QSOP (MAX4295)

    24-Pin SSOP (MAX4297)

Applications

    Palmtop/Notebook Computers

    PDA Audio

    Sound Cards

    Game Cards

    Boom Boxes

    AC Amplifiers

    Battery-Powered Speakers

    Cordless Phones

    Portable Equipment