
HWD2119
350mW Audio Power Amplifier with Shutdown Mode
General Description
The HWD2119 is a mono bridged power amplifier that is ca-
pable of delivering 350mW
RMS output power intoa 16 load
or 300mW
RMS output power into an 8 load with 10%
THD+N froma 5V power supply.
The HWD2119 audio power amplifier is designed specifically
to provide high quality output power and minimize PCB
area with surface mount packaging anda minimal amount
of external components. Since the HWD2119 does not
require output coupling capacitors, bootstrap capacitors or
snubber networks, it is optimally suited for low-power por-
table applications.
The closed loop response of the unity-gain stable HWD2119
can be configured using external gain-setting resistors. The
device is available in LLP, MSOP, and SO package types to
suit various applications.
Key Specifications
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THD+N at 1kHz, 350mW continuous average output
power into 16
10% (max)
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THD+N at 1kHz, 300mW continuous average output
power into 8
10% (max)
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Shutdown Current
0.7A (typ)
Features
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LLP, SOP, and MSOP surface mount packaging.
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Switch on/off click suppression.
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Unity-gain stable.
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Minimum external components.
Applications
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General purpose audio
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Portable electronic devices
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Information Appliances (IA)
Typical Application
FIGURE 1. Typical Audio Amplifier Application Circuit
Audio Power Amplifier
1