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General Description

The MAX4364/MAX4365 are bridged audio power amplifiers intended for portable audio devices with internal speakers. The MAX4364 is capable of deliver ing 1.4W from a single 5V supply and 500mW from a single 3V supply into an 8? load. The MAX4365 is capable of delivering 1W from a single 5V supply and 450mW from a single 3V supply into an 8? load. The MAX4364/MAX4365 feature 0.04 THD + N at 1kHz, 68dB PSRR at 217Hz and only 10nA of supply current in shutdown mode.

The MAX4364/MAX4365 bridged outputs eliminate the need for output-coupling capacitors, minimizing external component count. The MAX4364/MAX4365 also include internal DC bias generation, clickless operation, short-circuit and thermal-overload protection. Both devices are unity-gain stable, with the gain set by two external resistors.

Features

? 1.4W into 8? Load (MAX4364)

? 1W into 8? Load (MAX4365)

? 0.04 THD + N at 1kHz

? 68dB PSRR at 217Hz

? 2.7V to 5.5V Single-Supply Operation

? 5mA Supply Current

? Low-Power, 10nA Shutdown Mode

? Pin Compatible with the LM4861/LM4862/LM4864 (MAX4364)

? Clickless Power-Up and Shutdown

? Thermal-Overload and Short-Circuit Protection

? Available in Thin QFN, μMAX, and SO Packages

Applications

? Cellular Phones

? PDAs

? Two-Way Radios

? General-Purpose Audio

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