3W Audio Power Amplifier - CSMSC
Description
HWD2171
3W Audio Power Amplifier with Shutdown Mode
General Description
Key Specifications
The HWD2171 is a mono bridged audio power amplifier ca- n PO at 10% THD+N, 1kHz
pable of delivering 3W of continuous average power into a n HWD2171LD: 3Ω , 4Ω load
3W (typ), 2.
5W (typ)
3Ω load with less than 10% THD when powered by a 5V power supply (Note 1).
To conserve power in portable applications, the HWD2171’s micropower shutdown mode Q(I = 0.
6µA, typ) is activated when VDD is applied to the SHUTDOWN pin.
audio power amplifiers are designed specifically to provide
n All other HWD2171 packages: 8Ω loa
1.
5W (typ)
n Shutdown current
0.
6µA (typ)
n Supply voltage range
2.
0V to 5.
5V
n THD at 1kHz at 1W continuous average output power
into 8Ω
0.
5% (max)
high power, high fidelity audio output.
They require
Featuresfew external components and operate on low supply volt-
ages from 2.
0V to 5.
5V.
Since the HWD2171 does not require n No output coupling capacitors, bootstrap capacitors, or
output coupling capacitors, bootstrap capacitors, or snubber
snubber circuits required
networks, it is ideally suited for low-power portable systems n Unity-gain stable
that require minimum volume and weight.
n LLP, MSOP, SO, or DIP packaging
Additional HWD2171 features include thermal shutdown pro- n External gain configuration capability
tection, unity-gain stability, and external gain set.
n Pin compatible with the HWD2161
Note 1: An HWD2171LD that has been properly mounted to a circuit board will
Applicationsdeliver 3W into 3Ω (at 10% THD).
The other package options for the HWD2171
will deliver 1.
5W into 8Ω (at 10% THD).
See the Application Information
sections for further information concerning the HWD2171LD, HWD2171MM, n Portable computers
HWD2171M, and the HWD2171N.
n Desktop computers
n Low voltage audio systems
Typical Application
Connection Diagram
MSOP, Small Outline, and DIP Package
Top View Order Number HWD2171MM, HWD2171M, or HWD2171N
LLP Package
FIGU...
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