General Description
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.
Features
- Operating Voltage Range: 1.4V~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 Power Supply: 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
- Packages: USP-3/USP-4/SSOT-24/SOT-25
Applications
- Mobile phones ?RF, Digital cash, I/O etc.?
- Portable games
- Camera modules
- Wireless LAN modules
- LCD modules
- Bluetooth
- Digital-TV tuners
Typical Application Circuits
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