HWD2190

HWD2190 1 Watt Audio Power Amplifier General Description Key Specifications The HWD2190 is an audio power amplifier primarily designed for demanding applications in mobile phones and other por- table communication device applications. It is capable of delivering 1 watt of continuous average power to an 8Ω BTL load with less than 1% distortion (THD+N) from a 5VDC power supply. j PSRR at 217Hz, VDD = 5V (Fig. 1) j Power Output at 5.0V & 1% THD j Power Output at 3.3V & 1% THD j Shutdown Current 62dB(typ.) 1W(typ.) 400mW(typ.) 0.1µA(typ.) audio power amplifiers were designed specifically to Featuresprovide high quality output power with a minimal amount of external components. The HWD2190 does not require output n Available in space-saving packages: micro SMD, MSOP, coupling capacitors or bootstrap capacitors, and therefore is SOIC, and LLP ideally suited for mobile phone and other low voltage appli- n Ultra low current shutdown mode cations where minimal power consumption is a primary re- n BTL output can drive capacitive loads quirement. n Improved pop & click circuitry eliminates noises during The HWD2190 features a low-power consumption shutdown turn-on and turn-off transitions mode, which is achieved by driving the shutdown pin with logic low. Additionally, the HWD2190 features an internal ther- mal shutdown protection mechanism. n n 2.2 - 5.5V operation No output coupling capacitors, snubber networks or bootstrap capacitors required The HWD2190 contains ...