XC6223 Series

300mA High Speed LDO Voltage Regulator with Built-in Inrush Current Protection

The XC6223 series is a high speed LDO regulator that features high accurate, low noise, high ripple rejection, low dropout and low power consumption. The series consists of a voltage reference, an error amplifier, a driver transistor, a current limiter, a phase compensation circuit, a thermal shutdown circuit and an inrush current protection circuit.

The CE function enables the circuit to be in stand-by mode by inputting low level signal. In the stand-by mode, the series enables the electric charge at the output capacitor CL to be discharged via the internal switch, and as a result the VOUT pin quickly returns to the VSS level. The output stabilization capacitor CL is also compatible with low ESR ceramic capacitors.

The output voltage is selectable in 0.05V increments within the range of 1.2V to 4.0V which fixed by laser trimming technologies. The over current protection circuit and the thermal shutdown circuit are built-in. These two protection circuits will operate when the output current reaches current limit level or the junction temperature reaches temperature limit level.

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Dec 13, 2013
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Typical Application Circuit


MaximumOutput Current 300mA
Input Voltage Range 1.6~5.5V
Output Voltage Range 2.0~4.0V(Accuracy ±1%)
1.2~1.95V(Accuracy ±20mV)
0.05V increments
Dropout Voltage 200mV@IOUT=300mA(VOUT=3.0V)
Low Quiescent Current 100μA
Stand-by Current 0.1μA
High Ripple Rejection: 80dB@f=1kHz
Protection Circuits Current Limit(400mA)/Short Circuit Protection/Thermal Shut Down/Inrush Current Protection
Low ESR Capacitor CIN=1μF, CL=1μF
CE Function CL High Speed Auto Discharge



Technical Document

Quality Reports


QuestionWhat is the standby current?

The current that flows through the IC in the standby mode. The standby mode means the state where the IC has been turned off by the CE function.