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XC6221
GENERAL DESCRIPTION
The XC6221 series is a high accuracy, low noise, high speed, low dropout CMOS regulator with high ripple rejection. The series
includes a reference voltage source, an error amplifier, a current limiter, and a phase compensation circuit.
The CE function enables the entire circuit to be in stand-by state by inputting low level signal. As for the XC6221B/D stand-by
mode, the electric charge at the output capacitor (CL) will be discharged by the internal auto-discharge 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.
Output voltage is selectable in 0.05V increments within a range of 0.80V~5.00V, using the laser trimming technology set in
factory.
The current limiter's fold-back circuit also operates as a short circuit protection and an output current limiter at the output pin.
The series achieves a fast response with only 25μA of low power consumption. Also the series has low dropout voltage
characteristics, which is 80mV at IOUT=100mA and VOUT=3.0V.
With the use of small USP-4 and ultra small USPN-4 packages, a small footprint circuit can be designed.
APPLICATIONS
Cellular phones
Cordless phones
Wireless communication equipment
Portable games
Cameras, VCRs
Portable AV equipment
PDAs
FEATURES
Maximum Output Current : 200mA <Up to 250mA (TYP.)>
Dropout Voltage : 80mV@ IOUT=100mA,VOUT=3.0V
Operating Voltage Range : 1.6V ~ 6.0V
Output Voltage Range : 0.80V~5.00V (0.05V increments)
Accuracy
Low Power Consumption
Stand-by Current
: +2% (VOUT >1.50V) (Standard)
+30mV (VOUT≦1.45V) (Standard)
+1% (VOUT >2.00V) (High Accuracy)
+20mV (VOUT≦1.95V) (High Accuracy)
: 25μA (TYP.)
: Less than 0.1μA
High Ripple Rejection
CE Function
: 70dB @ 1kHz
: CE Active High
Standby current below 0.1μA
CL High-Speed Auto-Discharge
(XC6221B/D)
CE Pin internally pulled-down
(XC6221C/D)
Low ESR Capacitor : 1.0μF ceramic capacitor
Low Output Noise
Operating Ambient Temperature : -40℃~+85℃
Packages : USP-4, SOT-25, SSOT-24
USPN-4
Environmentally Friendly : EU RoHS Compliant, Pb Free
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