圣邦微电子

SGM4871 2.4W Audio Power Amplifier with Shutdown Mode

GENERAL DESCRIPTION

The SGM4871 is a mono bridged audio power amplifier that is designed for portable communication device applications and demanding applicationsin mobile phones. SGM4871YPS8 is capable of delivering 2.4W of continuous average power into a 4Ω load with typically 10% distortion (THD+N) from a 5V battery voltage. It operates from 2.5V to 5.5V power supply.

The SGM4871’smicro-power shutdown mode (ISD = 0.07μA TYP) is activated when V+ is applied to the SHDN pin. Since the SGM4871 does not require output coupling capacitors, bootstrap capacitors, or snubber networks, it is ideally suited for low power portable systems that require minimum volume and weight.

The SGM4871 is unity-gain stable and can be configured by external gain-setting resistors. Additionally, the SGM4871 features an internal thermal shutdown protection mechanism.

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.


PIN CONFIGURATIONS


FEATURES

• Output Power at THD+N = 10%, 1kHz
    SGM4871YPS8: 2.4W (TYP) into 4Ω Load
    SGM4871YS8: 1.5W (TYP) into 8Ω Load
• Unity Gain Stable
• 2.5V to 5.5V Operation
• Shutdown Current: 0.07μA (TYP)
• Thermal Overload Protection Circuitry
• No Output Coupling Capacitors, Bootstrap
    Capacitors or Snubber Networks Required
• External Gain Configuration Capability
• -40
 to +85 Operating Temperature Range
• Available in Green SOIC-8 (Exposed Pad) and
    SOIC-8 Packages

APPLICATIONS

Portable Systems
Wireless Handsets
Mobile Phone
PDAs


ORDERING INFORMATION

Part Number Status Package Pins Pb-Free Temp Range
SGM4871YPS8/TR Production SOIC-8 (Exposed Pad) 8 Y -40℃ to +85℃ Samples
SGM4871YS8/TR Production SOIC-8 8 Y -40℃ to +85℃ Samples

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