概述
Designed for analog and digital satellite receivers/ sat - TV, the LP6220A is an adjustable voltage regulator, specifically to provide the 14V/19V power supply and the 22kHz tone signaling to the LNB converter in the antenna dish or to the multi-switch box.LP6220A consists of a BOOST converter with an internal power MOS running at 1MHz switching frequency and a LDO regulator which with push-pull output stage generates clean 22-kHz tone signal superimposed at the output even at zero loading. The EXTM can accept a DiSEqC command and transfer it symmetrically to the output to meet DiSEqC 1.x protocol.Other features include over temperature protection and under-voltage lockout (UVLO). The LP6220Ais available in a space saving ESOP-8 package.
