IS31AP2145B

IS31AP2145B [email protected] MONO CLIP-LESS & FILTER-LESS CLASS-D AUDIO POWER AMPLIFIER Preliminary Information May 2012 GENERAL DESCRIPTION The IS31AP2145B is a [email protected] mono, clip-less, filter-less, high efficiency Class-D audio power amplifier with automatic gain control. The IS31AP2145B integrates AGC (Automatic Gain Control) function to automatically prevent distortion of the audio signal by which we can enhance audio quality and also protect the speaker from damage at high power levels. The AGC function and its attack time/release time are selectable via the CTRL pin. The IS31AP2145B also provides thermal and over current protection functions. In addition to these features, 90% high efficiency, improved RF-rectification immunity, a fast start-up time and small package size make IS31AP2145B ideal choice for cellular handsets, PDAs and other portable applications. IS31AP2145B is available in a 1.5mm×1.5mm UTQFN-9 package. FEATURES            Filter-less Class-D architecture AGC enable/disable function 2.7W into 4Ω at 5.0V (10% THD+N) Power supply range: 2.7V to 5.5V Selectable attack and release times Minimum external components High efficiency: 90% Click-and-pop suppression Low shutdown current: 0.1μA Short-circuit and thermal protection Space-saving UTQFN-9, 1.5mm × 1.5mm APPLICATIONS        http://www.DataSheet4U.net/ Wireless or cellular handsets and PDAs Portable navigation devices Portable DVD player Notebook PC Educational toys USB speakers Portable g...