HWD2171

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 ...