The new XC6603/04 series from Torex is a high speed and highly accurate LDO family which can supply up to 1A of output current while consuming only 100µA. With the help of a bias voltage that can be set between 2.5V and 6.0V, the XC6603/04 operates with input voltages from 0.5V to 3.0V and is readily available with fixed output voltages from 0.5V to 1.8V in 0.1V increments.
It is thanks to its integrated N-ch driver transistor that the minimum input and output voltages of the XC6603/04 can be much lower than more traditional LDOs with their integrated P-ch transistors. Another advantage of the XC6603/04 integrated N-ch driver transistor is that it dramatically reduces the on-resistance at low output voltages, leading to dropout voltages as low as 155mV @ 1A with VOUT = 1.2V (VBIAS = 3.6V). This makes the XC6603/04 ideally suited for low input/output voltage applications which require high output current and extended battery life.