XC6501 Series

CL Capacitor-less, Low Quiescent Current, 200mA High Speed LDO Regulator

The XC6501 series is a 6.0V high speed, low noise CMOS LDO regulator that can provide stable output voltages within a range of 1.2V to 5.0V (0.05V increments) even without a load capacitor CL. This is possible because phase compensation is carried out internally unlike other LDOs where it is done externally. The series consists of a reference voltage source, driver transistor, error amplifier, current limit circuit, and phase compensation circuit.

The CE function enables the circuit to be put into stand-by mode by inputting a low level signal to the CE pin thereby reducing current consumption from an already low 13μA (in operation) to less than 0.1μA. In the stand-by mode, if a CL cap is used, the electric charge stored at CL can be discharged via the internal auto-discharge switch and as a result, the VOUT pin quickly returns to the VSS level.

The current limit fold-back circuit operates as a short circuit protection and a current limiter function for the output pin.

Typical Application Circuit


Operating Voltage Range 1.4~6.0V
Output Voltage Range 2.0~5.0V(Accuracy :±1%)1.2~1.95V(Accuracy :±0.02V)
Dropout Voltage 150mV@IOUT=100mA,VOUT=2.8V
Low Quiescent Current 13μA@VOUT=2.8V
Stand-by Current Less than 0.1μA
Ripple Rejection 50dB@f=1kHz,VOUT=2.8V
Protection Circuits Current Limit(300mA,TYP)/Short Circuit Protection
Output capacitor is not required Internal phase compensation
Discharge 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.