XC6221
Series
■GENERAL
DESCRIPTION
ETR0328_011a
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
Output Current
Dropout Voltage
Operating Voltage Range
Output Voltages
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
Low Power Consumption
Stand-by Current
High Ripple Rejection
: 70dB @ 1kHz
Operating Temperature
: -40℃~85℃
Low ESR Capacitor
: 1.0μF ceramic capacitor
CL High-Speed Auto-Discharge (XC6221B/D)
CE Pin internally pulled-down
Low Output Noise
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
1/26
XC6221
Series
■PIN
CONFIGURATION
V
OUT
5
V
SS
2
V
OUT
1
3 CE
4 V
IN
NC
4
V
IN
4
V
OUT
3
1
V
IN
2
V
SS
3
CE
1
CE
2
V
SS
USP-4
(BOTTOM VIEW)
SOT-25
(TOP VIEW)
SSOT-24
(TOP VIEW)
V
SS
2
V
OUT
1
3 CE
4 V
IN
USPN-4
(BOTTOM 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.
pin.
The mount pattern
should be electrically opened or connected to the V
SS
(No.2)
■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
2/26
XC6221
Series
■PRODUCT
CLASSIFICATION
●Ordering
Information
XC6221
①②③④⑤⑥-⑦
(*1)
DESIGNATOR
DESCRIPTION
SYMBOL
A
①
Type of Regulator
(All CE high active)
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(T)
= 3.00V
→ ②
= 3,
③
= 0
+30mV @ 0.80V≦V
OUT(T)
≦1.40V
When 0.1V steps such as V
OUT(T)
=0.80V
→ ②=0, ③=8, ④=2
+2% @ V
OUT(T)
>1.50V
When 0.1V steps such as V
OUT(T)
=1.50V
→ ②=1, ③=5, ④=2
+30mV @ 0.85V≦V
OUT(T)
≦1.45V
When 0.05V steps such as V
OUT(T)
=0.85V
→ ②=0, ③=8, ④=A
+2% @ V
OUT(T
)
>1.55V
When 0.05V steps such as V
OUT(T)
=1.55V
→ ②=1, ③=5, ④=A
+20mV @ 0.80V≦V
OUT(T)
≦1.90V
When 0.1V steps such as V
OUT(T)
=0.80V
→ ②=0, ③=8, ④=1
+1% @ V
OUT(T)
>2.00V
When 0.1V steps such as V
OUT(T)
=2.00V
→ ②=2, ③=0, ④=1
+20mV @ 0.85V≦V
OUT(T)
≦1.95V
When 0.05V steps such as V
OUT(T)
=0.85V
→ ②=0, ③=8, ④=B
+1% @ V
OUT(T)
>2.00V
When 0.05V steps such as V
OUT(T)
=2.05V
→ ②=2, ③=0, ④=B
USP-4
USP-4
SOT-25
SOT-25
SSOT-24
SSOT-24
USPN-4
A
④
Output Accuracy
1
B
GR
GR-G
⑤⑥-⑦
Packages
Taping Type
(*2)
MR
MR-G
NR
NR-G
7R-G
* For the USPN-4 package, 0.80V≦V
OUT(T)
≦1.15V
is under development.
(*1)
(*2)
The “-G” suffix indicates that the products are Halogen and Antimony free as well as being fully RoHS compliant.
The device orientation is fixed in its embossed tape pocket.
For reverse orientation, please contact your local Torex sales office or representative.
(Standard orientation:
⑤R-⑦,
Reverse orientation:
⑤L-⑦)
3/26
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
Power Dissipation
SOT-25
SSOT-24
USPN-4
Operating Temperature Range
Storage Temperature Range
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
150
100
600(PCB mounted)
(*2)
- 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 22 for details.
4/26
XC6221
Series
■ELECTRICAL
CHARACTERISTICS
●XC6221A/B/C/D
series
PARAMETER
Output Voltage
(Standard)
SYMBOL
V
OUT(E)
(* 2)
Ta=25℃
CONDITIONS
1.5V<V
OUT(T),
V
CE
=V
IN
, I
OUT
=10mA
V
OUT
<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
OUT
MAX
V
OUT
Vdif
I
SS
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
IN
=V
OUT
+1.0V, I
OUT
=0mA
V
IN=
6.0V, V
CE
=V
SS
200
-
250
10
E-2
-
40
mA
mV
mV
①
①
①
②
②
Supply Current
Standby Current
-
-
25
0.01
50
0.10
μA
μA
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
Output Voltage
V
OUT /
V
CE
=V
IN,
Temperature Characteristics ( Ta½V
OUT
)
I
OUT
=30mA, -40℃<Ta<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
Ripple Rejection Rate
PSRR
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
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
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
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
-
-
dB
③
70
200
-
1.2
-
-0.1
1.03
-0.1
-
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
NOTE:
* 1: Unless otherwise stated regarding input voltage conditions, V
IN
=V
OUT(T)
＋1.0V.
* 2: V
OUT (E)
= Effective output voltage (Refer to the voltage chart E-0 and E-1)
(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.
5/26
