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.