AF6221

AF6221 Ultra Fast High PSRR Low Noise CMOS Voltage Regulator  INTRODUCTION The AF6221 seriesare a group of positivevoltageregulators manufactured by CMOS technologies with high ripple rejection,ultra low noise, low power consumption and low dropout voltage, which can prolong battery life in portable electronics. The AF6221 series work with low-ESR ceramic capacitors, reducing the amount of board space necessary for power applications. The AF6221 series consume less than 0.01μA in shutdown mode and have fast turn-on time less than 50μS.The series are very suitable for the battery-powered equipments, such as RF applicationsand other systems requiring a quiet voltage source.  FEATURES  High PSRR:70dB@100Hz  Low Dropout Voltage：170mV@200mA  Low Quiescent Current：25μA  Excellent Line and Load Transient Response  Operating Voltage Range：2.5V～5.5V  Output Voltage Range：1.5V ~ 3.3V  High Accuracy：±2％（Typ.）  Built-in Current Limiter, Short-...