资 源 简 介
The TC1223 and TC1224 are high accuracy (typically±0.5%) CMOS upgrades for older (bipolar) low dropoutregulators such as the LP2980. Designed specificallyfor battery-operated systems, the devices’ CMOSconstrucTIon eliminates wasted ground current,significantly extending battery life. Total supply currentis typically 50μA at full load (20 to 60 TImes lower thanin bipolar regulators).The devices’ key features include ultra low noiseoperaTIon; very low dropout voltage (typically 85mV,TC1223 and 180mV, TC1224 at full load) and fastresponse to step changes in load. Supply current isreduced to 0.5μA (max) and VOUT falls to zero whenthe shutdown input is low. The devices incorporate bothover temperature and over current protecTIon.The TC1223 and TC1224 are stable with an outputcapacitor of only 1μF and have a maximum outputcurrent of 50mA and 100mA respectively. For higheroutput current versions, please see the TC1107,TC1108 and TC1173 (IOUT = 300mA) data sheets.
