LM4871M Datasheet | Texas Instruments

FEATURES - 2 No Output Coupling Capacitors, Bootstrap Capacitors, or Snubber Circuits Required - Unity-gain Stable - WSON, VSSOP, SOIC, or PDIP Packaging - External Gain Configuration Capability - Pin patible with the LM4861 APPLICATIONS - Portable puters - Desktop puters - Low Voltage Audio Systems KEY SPECIFICATIONS - PO at 10% THD+N, 1k Hz - LM4871LD: 3Ω , 4Ω Loads; 3W (typ), 2.5 W (typ) - All other LM4871 Packages: 8Ω load 1.5 W (typ) - Shutdown Current 0.6µA (typ) - Supply Voltage Range 2.0V to 5.5 V - THD at 1k Hz at 1W Continuous Average Output Power into 8Ω 0.5% (max) DESCRIPTION The LM4871 is a mono bridged audio power amplifier capable of delivering 3W of continuous average power into a 3Ω load with less than 10% THD when powered by a 5V power supply (see Note). To conserve power in portable applications, the LM4871's micropower shutdown mode (IQ = 0.6µA, typ) is activated when VDD is applied to the SHUTDOWN pin. Boomer audio power amplifiers are designed specifically to provide high power, high fidelity audio output. They require few external ponents and operate on low supply voltages from 2.0V to 5.5V. Since the LM4871 does not require output coupling capacitors, bootstrap capacitors, or snubber networks, it is ideally suited for low-power portable systems that require minimum volume and weight. Additional LM4871 features include thermal shutdown protection, unity-gain stability, and external gain set. Note: An LM4871LD that has been properly mounted to a circuit board will deliver 3W into 3Ω (at 10% THD). The other package options for the LM4871 will deliver 1.5W into 8Ω (at 10% THD). See the Application Information section for further information concerning the LM4871LD, LM4871MM, LM4871M, and the LM4871N. Connection Diagrams Figure 1. VSSOP, Small Outline, and PDIP Package Top View See Package Number DGK0008A, D0008A, or D0008E Figure 2. WSON Package (Top View) See Package Number NGN0008A Please be aware that an important notice concerning...