XC6221 Series
ETR0328_015
■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
■FEATURES
●Smart phones / Mobile phones
Maximum Output Current
Dropout Voltage
Operating Voltage Range
Output Voltage Range
Accuracy
●Portable game consoles
●Digital still cameras / Camcorders
●Digital audio equipments
●Mobile devices / terminals
Low Power Consumption
Stand-by Current
High Ripple Rejection
CE Function
: 200mA
: 80mV@ IOUT=100mA,VOUT=3.0V
: 1.6V ~ 6.0V
: 0.80V~5.00V (0.05V increments)
: +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
: 70dB @ 1kHz
: CE Active High
Standby current below 0.1μA
CL High-Speed Auto-Discharge
(XC6221B/D)
CE Pin internally pulled-down
(XC6221C/D)
: 1.0μF ceramic capacitor
Low ESR Capacitor
Low Output Noise
Operating Ambient Temperature : -40℃~+85℃
Packages
: USP-4, SOT-25, SSOT-24
USPN-4
: EU RoHS Compliant, Pb Free
Environmentally Friendly
■ TYPICAL PERFORMANCE
CHARACTERISTICS
●Load Transient Response
1.9
XC6221x182
VIN=VCE=2.8V , Tr=Tf=5μs
Ta=25℃ , CIN=CL=1.0μF (ceramic)
300
1.8
250
1.7
200
1.6
1.5
150
100mA
Output Current
100
1.4
Output Current: I OUT (mA)
Output Voltage
Output Voltage: VOUT (V)
■TYPICAL APPLICATION CIRCUIT
50
10mA
1.3
0
Time: (500μs/div)
1/28
XC6221 Series
■PIN CONFIGURATION
VSS 2
3 CE
VOUT 1
4 VIN
VOUT
NC
5
4
1
2
3
VIN
VSS
CE
USP-4
(BOTTOM VIEW)
SOT-25
(TOP VIEW)
VSS 2
3 CE
VOUT 1
4 VIN
VIN
VOUT
4
3
1
2
CE
VSS
SSOT-24
(TOP VIEW)
*It is recommended that the heat dissipation pad of the USP-4
package is soldered by using the reference mount pattern and
metal mask pattern for mounting strength.
USPN-4
(BOTTOM VIEW)
The mount pattern
should be electrically opened or connected to the VSS (No.2)
pin.
■PIN ASSIGNMENT
PIN NUMBER
PIN NAME
FUNCTIONS
4
VIN
Power Input
3
1
VOUT
Output
2
2
2
VSS
Ground
3
3
1
3
CE
ON/OFF Control
-
4
-
-
NC
No Connection
USP-4
SOT-25
SSOT-24
USPN-4
4
1
4
1
5
2
■CE PIN LOGIC CONDITION
PIN NAME
DESIGNATOR
CONDITIONS
H
1.2V≦VCE≦6.0V
L
VCE≦0.3V
CE
* VCE : CE pin voltage
2/28
XC6221
Series
■PIN FUNCTION ASSIGNMENT
XC6221A/B (CE no pull-down resistor)
CE LEVEL
IC OPERATION
HIGH
LOW
OPEN
ON
OFF
Undefined state
XC6221C/D (CE pull-down resistor)
CE LEVEL
IC OPERATION
HIGH
LOW
OPEN
ON
OFF
■PRODUCT CLASSIFICATION
●Ordering Information
XC6221 ①②③④⑤⑥-⑦(*1)
DESIGNATOR
①
②③
ITEM
Type of Regulator
Output Voltage
SYMBOL
A
No CE pull-down resistor without CL auto discharge
B
No CE pull-down resistor with CL auto discharge
C
CE pull-down resistor without CL auto discharge
D
CE pull-down resistor with CL auto discharge
08 ~ 50
2
A
④
Output Accuracy
1
B
GR
⑤⑥-⑦(*1)
Packages
(Order Unit)
DESCRIPTION
ex.) VOUT= 3.00V → ② = 3, ③ = 0
+30mV @ 0.80V≦VOUT≦1.40V
When 0.1V steps such as VOUT=0.80V → ②=0, ③=8, ④=2
+2% @ VOUT>1.50V
When 0.1V steps such as VOUT=3.00V → ②=3, ③=0, ④=2
+30mV @ 0.85V≦VOUT≦1.45V
When 0.05V steps such as VOUT=0.85V → ②=0, ③=8, ④=A
+2% @ VOUT>1.55V
When 0.05V steps such as VOUT=3.05V → ②=3, ③=0, ④=A
+20mV @ 0.80V≦VOUT≦1.90V
When 0.1V steps such as VOUT=0.80V → ②=0, ③=8, ④=1
+1% @ VOUT>2.00V
When 0.1V steps such as VOUT= 3.00V → ②=3, ③=0, ④=1
+20mV @ 0.85V≦VOUT≦1.95V
When 0.05V steps such as VOUT=0.85V → ②=0, ③=8, ④=B
+1% @ VOUT>2.00V
When 0.05V steps such as VOUT= 3.05V → ②=3, ③=0, ④=B
USP-4 (3,000/Reel)
GR-G
USP-4 (3,000/Reel)
MR
SOT-25 (3,000/Reel)
MR-G
SOT-25 (3,000/Reel)
NR
SSOT-24 (3,000/Reel)
NR-G
SSOT-24 (3,000/Reel)
7R-G
USPN-4 (5,000/Reel)
(*1)
The “-G” suffix indicates that the products are Halogen and Antimony free as well as being fully EU RoHS compliant.
(*2)
The range of the output voltage of USPN-4 package is 1.20V≦VOUT≦5.00V.
3/28
XC6221 Series
■BLOCK DIAGRAMS
ON/OFF
Control
CE
V IN
CE
CE/
Error
Amp
ON/OFF
Control
CE
-
Current
Limit
CE
+
each
circuit
V IN
CE/
V OUT
Error
Amp
Current
Limit
+
each
circuit
V OUT
R1
R1
Rdischg
CE/
R2
R2
Voltage
Reference
Voltage
Reference
V SS
●XC6221A
Series
XC6221Aシリーズ
●XC6221B
Series
XC6221Bシリーズ
ON/OFF
CE
V IN
Control
ON/OFF
CE
CE/
R Pull
-down
Error
Amp
Current
Limit
CE
+
each
circuit
V IN
Control
R Pull
-down
CE
V SS
CE/
V OUT
Error
Amp
Current
Limit
+
each
circuit
V OUT
R1
R1
Rdischg
CE/
R2
R2
Voltage
Reference
Voltage
Reference
V SS
●XC6221C
Series
XC6221Cシリーズ
V SS
●XC6221D
Series
XC6221Dシリーズ
*Diodes inside the circuit are an ESD protection diode and a parasitic diode.
■ABSOLUTE MAXIMUM RATINGS
Ta=25℃
UNITS
PARAMETER
SYMBOL
RATINGS
Input Voltage
Output Current
VIN
IOUT
VSS -0.3 ~ +6.5
400(*1)
V
mA
Output Voltage
VOUT
VSS – 0.3 ~ VIN + 0.3
V
CE Input Voltage
VCE
VSS – 0.3 ~ +6.5
120
1000(PCB mounted)(*2)
250
(*2)
600(PCB mounted)
150
500(PCB mounted)(*2)
100
(*2)
600(PCB mounted)
- 40 ~ + 85
- 55 ~ +125
V
USP-4
SOT-25
Power Dissipation
Pd
SSOT-24
USPN-4
Operating Ambient Temperature
Storage Temperature
Topr
Tstg
mW
℃
℃
*1 IOUT≦Pd / (VIN-VOUT)
*2 These values are example data which is taken with the PCB mounted. Please refer to pages 21 to 24 for details.
4/28
XC6221
Series
■ELECTRICAL CHARACTERISTICS
●XC6221A/B/C/D series
Ta=25℃
PARAMETER
SYMBOL
Output Voltage
(Standard)
VOUT(E)
Output Voltage
(High Accuracy)
VOUT(E)
Output Current
IOUTMAX
Load Regulation
CONDITIONS
1.50V
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