LM4862

LM4862 www.ti.com SNAS102F – MAY 1997 – REVISED MAY 2013 LM4862 675 mW Audio Power Amplifier with Shutdown Mode Check for Samples: LM4862 FEATURES 1 2 No Output Coupling Capacitors, Bootstrap Capacitors or Snubber Circuits are Necessary Small Outline or PDIP Packaging Unity-Gain Stable External Gain Configuration Capability Pin Compatible with LM4861 APPLICATIONS Portable Computers Cellular Phones Toys and Games KEY SPECIFICATIONS THD+N for 500mW Continuous Average Output Power at 1kHz into 8Ω 1% (max) Output Power at 10% THD+N at 1kHz into 8Ω 825 mW (typ) Shutdown Current 0.7μA (typ) DESCRIPTION The LM4862 is a bridge-connected audio power amplifier capable of delivering typically 675mW of continuous average power to 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 components. Since the LM4862 does not require output coupling capacitors, bootstrap capacitors, or snubber networks, it is optimally suited for low-power portable systems. The LM4862 features an externally controlled, lowpower consumption shutdown mode, as well as an internal thermal shutdown protection mechanism. The unity-gain stable LM4862 can be configured by external gain-setting resistors. Typical Application Connection Diagram *Refer to Application Information for information concerning proper selection of the input coupling capacitor. Figure 1. Typica...