XC6221
Series
■GENERAL
DESCRIPTION
ETR0328_015
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
●Smart
phones / Mobile phones
●Portable
game consoles
●Digital
still cameras / Camcorders
●Digital
audio equipments
●Mobile
devices / terminals
■FEATURES
Maximum Output Current
Dropout Voltage
Operating Voltage Range
Output Voltage Range
Accuracy
: 200mA <Up to 250mA (TYP.)>
: 80mV@ I
OUT
=100mA,V
OUT
=3.0V
: 1.6V ~ 6.0V
: 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
: 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)
: 1.0μF ceramic capacitor
Low Power Consumption
Stand-by Current
High Ripple Rejection
CE Function
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
APPLICATION CIRCUIT
■
TYPICAL PERFORMANCE
CHARACTERISTICS
●Load
Transient Response
XC6221x182
V
IN
=V
CE
=2.8V , Tr=Tf=5μs
Ta=25℃ , C
IN
=C
L
=1.0μF (ceramic)
Output Voltage
1.8
Output Voltage: V
OUT
(V)
250
Output Current: I
OUT
(mA)
1.9
300
1.7
200
1.6
100mA
Output Current
150
1.5
100
1.4
10mA
1.3
Time: (500μs/div)
50
0
1/28
XC6221
Series
■PIN
CONFIGURATION
V
OUT
5
NC
4
V
IN
4
V
OUT
3
V
SS
2
V
OUT
1
3 CE
4 V
IN
1
V
IN
USP-4
(BOTTOM VIEW)
2
V
SS
SOT-25
(TOP VIEW)
3
CE
1
CE
2
V
SS
SSOT-24
(TOP VIEW)
V
SS
2
V
OUT
1
3 CE
4 V
IN
*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.
pin.
The mount pattern
should be electrically opened or connected to the V
SS
(No.2)
USPN-4
(BOTTOM VIEW)
■PIN
ASSIGNMENT
PIN NUMBER
USP-4
4
1
2
3
-
SOT-25
1
5
2
3
4
SSOT-24
4
3
2
1
-
USPN-4
4
1
2
3
-
PIN NAME
V
IN
V
OUT
V
SS
CE
NC
FUNCTIONS
Power Input
Output
Ground
ON/OFF Control
No Connection
■CE
PIN LOGIC CONDITION
PIN NAME
CE
* V
CE
：
CE pin voltage
DESIGNATOR
H
L
CONDITIONS
1.2V≦V
CE
≦6.0V
V
CE
≦0.3V
2/28
XC6221
Series
■PIN
FUNCTION ASSIGNMENT
XC6221A/B (CE no pull-down resistor)
CE LEVEL
HIGH
LOW
OPEN
XC6221C/D (CE pull-down resistor)
IC OPERATION
ON
OFF
Undefined state
CE LEVEL
HIGH
LOW
OPEN
IC OPERATION
ON
OFF
■PRODUCT
CLASSIFICATION
●Ordering
Information
XC6221
①②③④⑤⑥-⑦
(*1)
DESIGNATOR
ITEM
SYMBOL
A
①
Type of Regulator
B
C
D
②③
Output Voltage
08 ~ 50
2
DESCRIPTION
No CE pull-down resistor without C
L
auto discharge
No CE pull-down resistor with C
L
auto discharge
CE pull-down resistor without C
L
auto discharge
CE pull-down resistor with C
L
auto discharge
ex.) V
OUT
= 3.00V
→ ②
= 3,
③
= 0
+30mV @ 0.80V≦V
OUT
≦1.40V
When 0.1V steps such as V
OUT
=0.80V
→ ②=0, ③=8, ④=2
+2% @ V
OUT
>1.50V
When 0.1V steps such as V
OUT
=3.00V
→ ②=3, ③=0, ④=2
+30mV @ 0.85V≦V
OUT
≦1.45V
When 0.05V steps such as V
OUT
=0.85V
→ ②=0, ③=8, ④=A
+2% @ V
OUT
>1.55V
When 0.05V steps such as V
OUT
=3.05V
→ ②=3, ③=0, ④=A
+20mV @ 0.80V≦V
OUT
≦1.90V
When 0.1V steps such as V
OUT
=0.80V
→ ②=0, ③=8, ④=1
+1% @ V
OUT
>2.00V
When 0.1V steps such as V
OUT
= 3.00V
→ ②=3, ③=0, ④=1
+20mV @ 0.85V≦V
OUT
≦1.95V
When 0.05V steps such as V
OUT
=0.85V
→ ②=0, ③=8, ④=B
+1% @ V
OUT
>2.00V
When 0.05V steps such as V
OUT
= 3.05V
→ ②=3, ③=0, ④=B
USP-4 (3,000/Reel)
USP-4 (3,000/Reel)
SOT-25 (3,000/Reel)
SOT-25 (3,000/Reel)
SSOT-24 (3,000/Reel)
SSOT-24 (3,000/Reel)
USPN-4 (5,000/Reel)
A
④
Output Accuracy
1
B
GR
GR-G
⑤⑥-⑦
(*1)
Packages
(Order Unit)
MR
MR-G
NR
NR-G
7R-G
(*1)
(*2)
The “-G” suffix indicates that the products are Halogen and Antimony free as well as being fully EU RoHS compliant.
The range of the output voltage of USPN-4 package is 1.20V≦V
OUT
≦5.00V.
3/28
XC6221
Series
■BLOCK
DIAGRAMS
CE
ON/OFF
Control
V
IN
CE
ON/OFF
Control
V
IN
-
CE
CE/
Error
Amp
Current
Limit
-
CE
CE/
Error
Amp
Current
Limit
each
circuit
+
V
OUT
R1
each
circuit
+
V
OUT
R1
Rdischg
CE/
R2
R2
Voltage
Reference
V
SS
Voltage
Reference
V
SS
●XC6221A
Series
XC6221A½ﾘ½½½ﾞ
●XC6221B
Series
XC6221B½ﾘ½½½ﾞ
CE
R Pull
-down
ON/OFF
Control
V
IN
CE
R Pull
-down
ON/OFF
Control
V
IN
-
CE
CE/
Error
Amp
Current
Limit
-
CE
CE/
Error
Amp
Current
Limit
each
circuit
+
V
OUT
R1
each
circuit
+
V
OUT
R1
Rdischg
CE/
R2
R2
Voltage
Reference
V
SS
Voltage
Reference
V
SS
●XC6221C
Series
XC6221C½ﾘ½½½ﾞ
*Diodes inside the circuit are an ESD protection diode and a parasitic diode.
●XC6221D
Series
XC6221D½ﾘ½½½ﾞ
■ABSOLUTE
MAXIMUM RATINGS
PARAMETER
Input Voltage
Output Current
Output Voltage
CE Input Voltage
USP-4
SOT-25
Power Dissipation
SSOT-24
USPN-4
Operating Ambient Temperature
Storage Temperature
Topr
Tstg
Pd
SYMBOL
V
IN
I
OUT
V
OUT
V
CE
RATINGS
V
SS
-0.3 ~ +6.5
400
(*1)
V
SS
– 0.3 ~ V
IN
+ 0.3
V
SS
– 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
Ta=25℃
UNITS
V
mA
V
V
mW
℃
℃
*1 I
OUT
≦Pd
/ (V
IN
-V
OUT
)
*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
PARAMETER
Output Voltage
(Standard)
SYMBOL
V
OUT(E)
(* 2)
Ta=25℃
CONDITIONS
1.50V<V
OUT(T),
V
CE
=V
IN
, I
OUT
=10mA
V
OUT(T)
<1.45V, V
CE
=V
IN
, I
OUT
=10mA
V
OUT(E)
(* 2)
MIN.
x 0.98
(*3)
TYP.
V
OUT(T)
(*4)
MAX.
x 1.02
(*3)
UNITS CIRCUIT
V
①
-0.03
(*3)
+0.03
(*3)
Output Voltage
(High Accuracy)
Output Current
Load Regulation
Dropout Voltage
(*5)
2.00V<V
OUT(T)
, V
CE
=V
IN
, I
OUT
=10mA
V
OUT(T)
<1.95V, V
CE
=V
IN
, I
OUT
=10mA
x 0.99
(*3)
x 1.01
V
OUT(T)
(*4)
(*3)
-0.02
(*3)
+0.02
(*3)
V
①
I
OUTMAX
V
OUT
Vdif
I
DD
I
STB
V
CE
=V
IN
,V
IN
=V
OUT(T)
+1.0V,
0.80V<V
OUT(T)
<5.00V
V
CE
=V
IN
,0.1mA≦I
OUT
≦100mA
V
CE
=V
IN,
I
OUT
=100mA
V
CE
=V
IN
、V
IN
= V
OUT(T)
+1.0V
V
IN=
6.0V, V
CE
=V
SS
200
-
250
10
-
40
mA
mV
mV
μA
μA
①
①
①
②
②
Refer to the voltage chart
-
-
25
0.01
50
0.10
Supply Current
Standby Current
V
OUT(T)
+0.5V≦V
IN
≦6.0V
V
OUT
/ 1.10V≦V
OUT(T),
V
CE
=V
IN
, I
OUT
=10mA
Line Regulation
( V
IN
½V
OUT
)
1.6V≦V
IN
≦6.0V
V
OUT(T)
≦1.05V,
V
CE
=V
IN,
I
OUT
=10mA
Input Voltage
V
IN
V
OUT
/
Output Voltage
V
CE
=V
IN,
Temperature Characteristics ( Topr½V
OUT
)
I
OUT
=30mA, -40℃<Topr<85℃
V
IN
=5.75V
DC
+0.5Vp-pAC
4.75V≦V
OUT(T)
V
CE
=V
IN
, I
OUT
=30mA, f=1kHz
V
IN
=½V
OUT(T)
+1.0½V
DC
+0.5Vp-pAC
4.05V≦V
OUT(T)
≦4.70V
V
CE
=V
IN
, I
OUT
=30mA, f=1kHz
V
IN
=½V
OUT(T)
+1.0½V
DC
+0.5Vp-pAC
0.85V≦V
OUT(T)
≦4.00V
V
CE
=V
IN
, I
OUT
=30mA, f=1kHz
V
IN
=1.85V
DC
+0.5Vp-pAC
V
OUT(T)
=0.80V
V
CE
=V
IN
, I
OUT
=30mA, f=1kHz
V
CE
=V
IN
V
CE
=V
IN,
V
OUT
is short-circuited at
the V
SS
level
-
1.6
-
0.01
-
±100
0.20
6.0
-
%/V
V
ppm/℃
①
①
①
60
Ripple Rejection Rate
PSRR
-
-
dB
③
70
Limit Current
Short Current
CE High Level Voltage
CE Low Level Voltage
CE High Level Current
CE Low Level Current
CL Auto-Discharge Resistance
(* 8)
I
LIM
I
SHORT
V
CEH
V
CEL
I
CEH
I
CEL
R
DCHG
200
-
1.2
-
250
30
-
-
-
-
-
780
-
-
6.0
0.3
0.1
2.37
0.1
-
mA
mA
V
V
μA
μA
Ω
①
①
④
④
④
④
①
V
CE
=V
IN
(XC6221A/B)
V
CE
=6.0V (XC6221C/D)
V
CE
=V
SS
V
IN
=6.0V, V
OUT
=4.0V, V
CE
=V
SS
-0.1
1.03
-0.1
-
NOTE:
* 1: Unless otherwise stated regarding input voltage conditions, V
IN
=V
OUT(T)
＋1.0V.
* 2: V
OUT (E)
= Effective output voltage
(The output voltage when an amply stabilized "V
OUT (T)
＋1.0V"
is provided at the V
IN
pin while maintaining a certain I
OUT
value.)
* 3: The relation between V
OU T (E)
and V
OUT (T)
is shown in the voltage chart E-0 and E-1.
* 4: V
OUT (T)
= Nominal output voltage
(*7)
(*6)
* 5: Vdif = {V
IN1
-V
OUT1
}
* 6: V
OUT1
is the voltage equal to 98% of the normal output voltage when amply stabilized V
OUT (T)
+1.0V are input at the V
IN
pin.
* 7: V
IN1
is the input voltage when V
OUT1
appears at the V
OUT
pin while input voltage is gradually decreased.
* 8: For the XC6221B/D series only. The XC6221A/C series discharges by resistors R1 and R2 only as shown in the block diagrams.
* 9: For operating supply current of the XC6221C/D, a current through the pull-down resistor should be considered in addition to the
supply current value mentioned above.
5/28
