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.