The XZ1804 series low-power, low-noise, low-dropout,CMOS linear voltage regulators operate from a 2.5V to 5.5V input and deliver up to 300mA. They are the perfect choice for low voltage, low power applications. An ultra low ground current（200μA at 300mA output ) makes these part attractive for battery operated power systems. The TG1804 series also offer ultra low dropout voltage (300mV at 300mA outp life in portable electronics. Systems requiring a quiet voltage source, such as RF applications, will benefit from the XZ1804 series’ ultra low output noise (30μVRMS) and high PSRR. An external noise bypass capacitor connected to the device’s BP pin can further reduce the noise level. The output voltage is preset to voltages in the range of 1.5V to 3.3V. Other features include a 10nA logic-controlled
shutdown mode, foldback current limit and thermal shutdown protection. Devices come in 5-pin SOT23 package.