SNAS102F – MAY 1997 – REVISED MAY 2013
675 mW Audio Power Amplifier with Shutdown
Check for Samples: LM4862
•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
• Portable Computers
• Cellular Phones
• Toys and Games
• 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)
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, low-
power 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.
*Refer to Application Information for information concerning proper
selection of the input coupling capacitor.
Figure 1. Typical Audio Amplifier Application
Figure 2. Small Outline and PDIP Package-Top
See Package Number D0008A or P0008E
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