XZ1803B
The XZ1803B is a low-dropout voltage regulator designed for portable applications that require both low noise performance and board space. Its PSRR at 1kHz is better than 70dB. The XZ1803B is ideal for battery powered systems for delivering low dropout voltage and low quiescent current. An optional external bypass capacitor reduces the output noise and increases PSRR. The device can be used for mobile phones and similar battery powered wireless applications. It provides up to 500mA, from a 2.5V to 5.5V input. The TG1803B consumes less than 0.1μA in shutdown mode and has fast turn-on time less than 150μs. The TG1803B is available in a 5 pin SOT-23 package. Selected performances are specified for −40°C to +85°C temperature range. The output voltage is available in the range of 1.5~2.0V, 2.5~3.3V, 4.7~5.0V.
