LM4871
www.ti.com SNAS002F – FEBRUARY 2000 – REVISED MAY 2013 LM4871 3W Audio Power Amplifier with Shutdown Mode
Check for Samples: LM4871 FEATURES 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 = 0.6ВµA,
typ) is activated when VDD is applied to the
SHUTDOWN pin. 1 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 Compatible with the LM4861 APPLICATIONS Portable Computers
Desktop Computers
Low Voltage Audio Systems KEY SPECIFICATIONS PO at 10% THD+N, 1kHz
– LM4871LD: 3Ω , 4Ω Loads; 3W (typ),
2.5 W (typ)
– All other LM4871 Packages: 8Ω load
1.5 W (typ)
Shutdown Current 0.6ВµA (typ)
Supply Voltage Range 2.0V to 5.5 V …
