LM4864 Datasheet | National Semiconductor

Description The LM4864 is a bridged audio power amplifier capable of delivering 300 m W of continuous average power into an 8Ω load with 1% (THD) from a 5V power supply. Boomer ® audio power amplifiers were designed specifically to provide high quality output power from a low supply voltage while requiring a minimal amount of external ponents. Since the LM4864 does not require output coupling capacitors, bootstrap capacitors or snubber networks, it is optimally suited for low-power portable applications. The LM4864 features an externally controlled, low power consumption shutdown mode, and thermal shutdown protection. The closed loop response of the unity-gain stable LM4864, can be configured by external gain-setting resistors. The device is available in multiple package types to suit various applications. Key Specifications n THD at 1 k Hz at 300 m W continuous average output power into 8Ω n THD at 1 k Hz at 300 m W continuous average output power into 16Ω n Shutdown current 1.0% (max) 1.0% (max) 0.7 µA (typ) Features n MSOP, SOP, and DIP packaging n No output coupling capacitors, bootstrap capacitors, or snubber circuits are necessary n Thermal shutdown protection circuitry n Unity-gain stable n External gain configuration capability Applications n Cellular Phones n Personal puters n General Purpose Audio Typical Application Connection Diagram MSOP, SOP, and DIP Package DS012607-2 Top View Order Number LM4864MM, LM4864M or LM4864N See NS Package Number MUA08A, M08A or N08E DS012607-1 FIGURE 1. Typical Audio Amplifier Application Circuit Boomer ® is a registered trademark of National Semiconductor Corporation. © 1999 National Semiconductor Corporation DS012607 .national. Absolute Maximum Ratings (Note 2) If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Supply Voltage Storage Temperature Input Voltage Power Dissipation (Note 3) ESD Susceptibility...