LM4871 Datasheet | National Semiconductor

Description The LM4871 is a bridge-connected audio power amplifier capable of delivering typically 1.1W of continuous average power to an 8Ω load with 0.5% (THD) from a 5V power supply. Boomer audio power amplifiers were designed specifically to provide high quality output power with a minimal amount of external ponents. Since the LM4871 does not require output coupling capacitors, bootstrap capacitors, or snubber networks, it is optionally suited for low-power portable systems. The LM4871 features an externally controlled, low-power consumption shutdown mode, as well as an internal thermal shutdown protection mechanism. The unity-gain stable LM4871 can be configured by external gain-setting resistors. Key Specifications n THD at 1 k Hz at 1W continuous average output power into 8Ω n Output power at 10% THD+N at 1 k Hz into 8Ω n Shutdown Current 0.5% (max) 1.5W (typ) 0.6 µA (typ) Features n No output coupling capacitors, bootstrap capacitors, or snubber circuits are necessary n Small Outline or DIP packaging n Unity-gain stable n External gain configuration capability n Pin patible with LM4861 Applications n Portable puters n Desktop puters n Low Voltage Audio Systems Typical Application Connection Diagram Small Outline and DIP Package DS100008-2 Top View Order Number LM4871M or LM4871N See NS Package Number M08A or N08E DS100008-1 FIGURE 1. Typical Audio Amplifier Application Circuit Boomer ® is a registered trademark of National Semiconductor Corporation. © 2000 National Semiconductor Corporation DS100008 .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 Supply Temperature Input Voltage Power Dissipation (Note 3) ESD Susceptibility (Note 4) ESD Susceptibility (Note 5) Junction Temperature Soldering Information Small Outline Package Vapor Phase (60 sec.) 215˚C 6.0V - 65˚C to...