LM4882 Datasheet | National Semiconductor

Description The LM4882 is a single-ended audio power amplifier capable of delivering 250 m W of continuous average power into an 8Ω load with 1% (THD + N) 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 using surface mount packaging. Since the LM4882 does not require bootstrap capacitors or snubber networks, it is optimally suited for low-power portable systems. The LM4882 features an externally controlled, low power consumption shutdown mode which is virtually clickless and popless, as well as an internal thermal shutdown protection mechanism. The unity-gain stable LM4882 can be configured by external gain-setting resistors. Key Specifications n THD + N at 1 k Hz at 250 m W continuous average output power into 8Ω n Output Power at 1% THD + N at 1k Hz into 4Ω n THD + N at 1 k Hz at 85 m W continuous average output power into 32Ω n Shutdown Current 1.0% (max) 380m W (typ) 0.1% (typ) 0.7 µA (typ) Features n n n n n n n MSOP surface mount packaging “Click and Pop” Suppression Circuitry Supply voltages from 2.4V- 5.5V Operating Temperature - 40˚C to 85˚C Unity-gain stable External gain configuration capability No bootstrap capacitors, or snubber circuits are necessary Applications n Personal puters n Cellular Phones n General Purpose Audio Typical Application Connection Diagram MSOP and SOIC Package DS100030-2 Top View Order Number LM4882MM or LM4882M See NS Package Number MUA08A or M08A DS100030-1 - Refer to the Application Information Section for information concerning proper selection of the input and output coupling capacitors. FIGURE 1. Typical Audio Amplifier Application Circuit Boomer ® is a registered trademark of National Semiconductor Corporation. © 1998 National Semiconductor Corporation DS100030 .national. Absolute Maximum Ratings (Note 1) If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales...