XC6204A02BDR description
http://www.chinaicmart.com/series-XC6/XC6204A02BDR.html
The XC6204 series are highly precise, low noise, positive voltage LDO
regulators manufactured using CMOS processes. The series achieves high
ripple rejection and low dropout and consists of a standard voltage
source, an error correction, current limiter and a phase compensation
circuit plus a driver transistor.
Output voltage is selectable in 50mV increments within a range of 1.8V
~ 6.0V.
The series is also compatible with low ESR ceramic capacitors which
give added output stability. This stability can be maintained even
during load fluctuations due to the excellent transient response of
the series.
The current limiter's foldback circuit also operates as a short
protect for the output current limiter and the output pin. The CE
function enables the output to be turned off, resulting in greatly
reduced power consumption.