XC6221A252MR-G Datasheet, PDF (1/28 Pages) Torex Semiconductor – Low ESR Caps Compatible High Speed LDO Voltage Regulator with ON/OFF Switch

XC6221 Series
ETR0328_014
■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.
■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
Operating Voltage Range
: 80mV@ I_OUT=100mA,V_OUT=3.0V
: 1.6V ~ 6.0V
Output Voltage Range
Accuracy
Low Power Consumption
Stand-by Current
: 0.80V~5.00V (0.05V increments)
: +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 APPLICATION CIRCUIT
■ TYPICAL PERFORMANCE
CHARACTERISTICS
●Load Transient Response
XC6221x182
VIN=VCE=2.8V , Tr=Tf=5μs
Ta=25℃ , CIN=CL=1.0μF (ceramic)
1.9
300
Output Voltage
1.8
250
1.7
200
1.6
150
100mA
Output Current
1.5
100
1.4
10mA
1.3
Time: (500μs/div)
50
0
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