GENERAL DEscriptION

The SGM4871 is a mono bridge-connected audio power amplifier which operates from 2.5V to 5.5V supply voltage. It can deliver 2.4W into a 4Ω load from 5V supply at THD+N = 10%. It is designed for portable applications. The external gain-setting resistors can configure the unity-gain stable of the device.

The SGM4871 has low power consumption shutdown mode and thermal shutdown protection.

The SGM4871 is applied to low power portable systems. Output coupling capacitors, bootstrap capacitors or snubber networks are not needed.

The SGM4871 is available in Green SOIC-8 and SOIC-8 (Exposed Pad) packages. It operates over an ambient temperature range of -40℃ to +85℃.

FEATURES

• Supply Voltage Range: 2.5V to 5.5V

• Output Power at THD+N = 10%, 1kHz

  SGM4871YPS8: 2.4W (TYP) into 4Ω Load

  SGM4871YS8: 1.5W (TYP) into 8Ω Load

• Shutdown Current: 0.07μA (TYP)

• No Output Coupling Capacitors

• External Gain Configuration Capability

• Unity Gain Stable

• Thermal Overload Protection Circuitry

• -40℃ to +85℃ Operating Temperature Range

• Available in Green SOIC-8 (Exposed Pad) and SOIC-8 Packages

APPLICATIONS

Mobile Phones, PDAs

Portable Systems

Wireless Handsets