Microchip TC1054-5.0VCT713, 1 Low Dropout Voltage, Voltage Regulator 50mA, 5 V

The Microchip high accuracy CMOS LDO is an upgrades for older (bipolar) low dropout regulators. Designed specifically for battery-operated systems, the devices’ CMOS construction eliminates wasted ground current, significantly extending battery life. The key features include ultra low noise operation, very low dropout voltage and fast response to step changes in load. An error output (ERROR) is asserted when the devices are out-of-regulation (due to a low input voltage or excessive output current). ERROR can be used as a low battery warning or as a processor RESET signal (with the addition of an external RC network).

Low ground current for longer battery life
High output voltage accuracy
Power-saving shutdown mode
ERROR output can be used as a low battery detector, or processor reset generator
Over-current and over-temperature protection
Pin compatible upgrades for bipolar regulators