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XC6221 Series
■
PPLICATIONS
●Smart phones / Mobile phones
●Portable game consoles
●Digital still cameras / Camcorders
●Digital audio equipments
●Mobile devices / terminals
■TYPICAL APPLICATION CIRCUIT
■FEATURES
Maximum Output Current : 200mA <Up to 250mA (TYP.)>
Dropout Voltage : 80mV@ I
OUT
=100mA,V
OUT
=3.0V
Operating Voltage Range : 1.6V ~ 6.0V
: 0.80V~5.00V (0.05V increments)Output Voltage Range
Accuracy
Low Power Consumption
Stand-by Current
: +
2% (V
OUT
>1.50V) (Standard)
+30mV (V
OUT
≦
1.45V) (Standard)
+1% (V
OUT
>2.00V) (High Accuracy)
+20mV (V
OUT
≦
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
C
L
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
■ TYPICAL PERFORMANCE
CHARACTERISTICS
●Load Transient Response
■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 (C
L
) will be discharged by the internal auto-discharge switch, and as a result
the V
OUT
pin quickly returns to the V
SS
level. The output stabilization capacitor (C
L
) 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 I
OUT
=100mA and V
OUT
=3.0V.
With the use of small USP-4 and ultra small USPN-4 packages, a small footprint circuit can be designed.
ETR0328_015
XC6221x182
1.3
1.4
1.5
1.6
1.7
1.8
1.9
Time: (500μs/div)
Output Voltage: V
OUT
(V)
0
50
100
150
200
250
300
Output Current: I
OUT
(mA)
Output Voltage
Output Current
100mA
10mA
V
IN
=V
CE
=2.8V , Tr=Tf=5μs
Ta=25℃ , C
IN
=C
L
=1.0μF (ceramic)
