LM4878 Datasheet | National Semiconductor

Description The LM4878 is a bridge-connected audio power amplifier capable of delivering 1 W of continuous average power to an 8Ω load with less than .2% (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 LM4878 does not require output coupling capacitors or bootstrap capacitors. It is optimally suited for low-power portable applications. The LM4878 features an externally controlled, low-power consumption shutdown mode, as well as an internal thermal shutdown protection mechanism. The unity-gain stable LM4878 can be configured by external gain-setting resistors. Key Specifications j Power Output at 0.2% THD j Shutdown Current 1 W (typ) 0.01 µA (typ) Features n n n n n n Internal pulldown resistor on shutdown. micro SMD package (see App. note AN-1112) 5V - 2V operation No output coupling capacitors or bootstrap capacitors. Unity-gain stable External gain configuration capability Applications n Cellular Phones n Portable puters n Low Voltage Audio Systems Typical Application FIGURE 1. Typical Audio Amplifier Application Circuit Boomer ® is a registered trademark of National Semiconductor Corporation. © 2002 National Semiconductor Corporation DS101360 .national. Connection Diagrams 8 Bump micro SMD Top View Order Number LM4878IBP, LM4878IBPX See NS Package Number BPA08B6B micro SMD Marking Top View X - Date Code T - Die Traceability G - Boomer Family D - LM4878IBP .national. Absolute Maximum Ratings (Note 2) Soldering Information See AN-1112 ’Micro-SMD Wafers Level Chip Scale Package’. 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 (Note 4) ESD Susceptibility (Note 5)...