LM4860 Datasheet | National Semiconductor

Description The LM4860 is a bridge-connected audio power amplifier capable of delivering 1W of continuous average power to an 8Ω load with less than 1% (THD+N) over the audio spectrum 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 LM4860 does not require output coupling capacitors, bootstrap capacitors or snubber networks, it is optimally suited for low-power portable systems. The LM4860 features an externally controlled, low-power consumption shutdown mode, as well as an internal thermal shutdown protection mechanism. It also includes two headphone control inputs and a headphone sense output for external monitoring. The unity-gain stable LM4860 can be configured by external gain setting resistors for differential gains of 1 to 10 without the use of external pensation ponents. output power into 8Ω: 1% (max) n Instantaneous peak output power: n Shutdown current: 0.6 µA (typ) > 2W Features n No output coupling capacitors, bootstrap capacitors, or snubber circuits are necessary n Small Outline (SO) power packaging n patible with PC power supplies n Thermal shutdown protection circuitry n Unity-gain stable n External gain configuration capability n Two headphone control inputs and headphone sensing output Applications n n n n n Personal puters Portable consumer products Cellular phones Self-powered speakers Toys and games Key Specifications n THD+N at 1W continuous average Typical Application Connection Diagram Small Outline Package DS011988-2 Top View Order Number LM4860M See NS Package Number M16A DS011988-1 FIGURE 1. Typical Audio Amplifier Application Circuit The Boomer ® registered trademark is licensed to National Semiconductor for audio integrated circuits by Rockford Corporation. Patents pending. © 1999 National Semiconductor Corporation DS011988 .national. Absolute Maximum Ratings (Note 2) If...