1FEATURES

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

APPLICATIONS

? Portable Computers

? Cellular Phones

? Toys and Games

KEY SPECIFICATIONS

? 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)

DESCRIPTION

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, lowpower

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.