1FEATURES
2• No Bootstrap Capacitors or Snubber Circuits
are Necessary
• Small Outline (SOIC) and PDIP Packaging
• Unity-Gain Stable
• External Gain Configuration Capability

APPLICATIONS
• Headphone Amplifier
• Personal Computers
• CD-ROM Players

lowKEY
SPECIFICATIONS
• THD+N at 1kHz at 200mW Continuous Average
Output Power into 8Ω: 0.1% (max)
• THD+N at 1kHz at 85mW Continuous Average
Output Power into 32Ω: 0.1% (typ)
• Output Power at 10% THD+N at 1kHz into 8Ω
325 mW (typ)
• Shutdown Current 0.7 μA (typ)
• 2.7V to 5.5V Supply Voltage Range

DESCRIPTION
The LM4880 is a dual audio power amplifier capable
of delivering typically 250mW per channel of
continuous average power to an 8Ω load with 0.1%
THD+N using a 5V power supply.
Boomer audio power amplifiers were designed
specifically to provide high quality output power with a
minimal amount of external components using
surface mount packaging.
Since the LM4880 does not require bootstrap
capacitors or snubber networks, it is optimally suited
for low-power portable systems.
The LM4880 features an externally controlled, lowKEY
power consumption shutdown mode, as well as an
internal thermal shutdown protection mechanism.
The unity-gain stable LM4880 can be configured by
external gain-setting resistors.