SGM4871 Datasheet, PDF (1/12 Pages) SG Micro Corp – Audio Power Amplifier with Shutdown Mode

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 applications in 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’s micro-power shutdown mode (I_SD =
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.
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
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℃.
APPLICATIONS
Portable Systems
Wireless Handsets
Mobile Phone
PDAs
SG Micro Corp
www.sg-micro.com
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