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)|
|Low Quiescent Current||13μA@VOUT=2.8V|
|Stand-by Current||Less than 0.1μA|
|Protection Circuits||Current Limit(300mA,TYP)/Short Circuit Protection|
|Output capacitor is not required||Internal phase compensation|
|Discharge||CL High Speed Auto Discharge|