XC6420
Series
150mA Small Dual LDO Regulator with ON/OFF Switch
ETR0352-008
■GENERAL
DESCRIPTION
The XC6420 series is a small dual CMOS LDO regulator with 2-channel 150mA outputs. The series features high speed,
high accuracy, high ripple rejection and low dropout voltage. The series is capable of high density board installation by the
small package of two low on-resistance regulators. Each output voltage is internally set in a range from 1.2V to 3.6V in
increments of 0.05V with
±2%
accuracy.
The EN function controls the two regulators on/off independently. In the stand-by mode, the electric charge at the output
capacitor C
L
is discharged via the internal switch and as a result the V
OUT
pin quickly returns to the V
SS
level.
The series is also compatible with low ESR ceramic capacitors. The high level of output stability is maintained even during
frequent load fluctuations, due to the excellent transient response performance. The two regulators are completely isolated so
that a cross talk during load fluctuations is minimized.
■APPLICATIONS
●
Smart phones / Mobile phones
●
Portable game consoles
●
Digital audio equipments
●
Digital still cameras / Camcorders
■FEATURES
Maximum Output Current
Operating Voltage Range
Output Voltage
Dropout Voltage
Low Power Consumption
Stand-by Current
Ripple Rejection
EN Function
Protection Circuit
Output Capacitor
Operating Ambient Temperature
Packages
: 150mA
: 1.6V∼5.5V
: 1.2V∼3.6V (±2%) 0.05V increments
: 190mV
＠I
OUT
=150mA (V
OUT
=3.3V)
: 55μA / ch (TYP.)
: 0.1μA
: 75dB@1kHz
: Active High
C
L
High Speed Auto Discharge
: Current Limit 250mA (TYP.)
Short Circuit 50mA (TYP.)
: 1.0μF Ceramic Capacitor
: -40℃~+85℃
: SOT-26
USPN-6
USP-6B04
: EU RoHS Compliant, Pb Free
Environmentally Friendly
■TYPICAL
APPLICATION CIRCUITS
■TYPICAL
PERFORMANCE
CHARACTERISTICS
Ripple Rejection
XC6420(V
OUT
=1.8V)
V
IN
=3.0V+0.5V
p- pAC
, Ta=25℃
C
IN
=0.1μF(ceramic), C
L
=1.0μF(ceramic)
Ripple Rejection Rate : RR (dB)
100
80
60
40
20
0
0.1
1
10
100
1000
Ripple Frequency : f (kHz)
IOUT=0.1mA
IOUT=1mA
IOUT=30mA
IOUT=100mA
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XC6420
Series
■
PRODUCT CLASSIFICATION
●Ordering
Information
XC6420①②③④⑤⑥-⑦
(*1)
DESIGNATOR
①
②
③④
⑤⑥-⑦
(*1)
(*1)
ITEM
Basic Function
Enable Pin
Output Voltage
Packages (Order Unit)
SYMBOL
A
B
01∼
MR-G
7R-G
DR-G
DESCRIPTION
EN1: Active High, EN2: Active High
V
OUT1
: with C
L
Auto Discharge,
V
OUT2
: with C
L
Auto Discharge
EN1: With Pull-down, With EN2: Pull-down
See the chart below
SOT-26 (3,000/Reel)
USPN-6 (5,000/Reel)
USP-6B04 (5,000/ Reel)
The “-G” suffix denotes Halogen and Antimony free as well as being fully EU RoHS compliant.
DESIGNATOR
③④
③④
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
V
OUT1
(V)
1.20
1.20
1.20
1.20
1.20
1.20
1.50
1.50
1.50
1.50
1.50
1.50
1.80
1.80
2.85
1.80
1.80
3.00
1.80
2.50
2.50
2.50
3.30
2.50
2.50
2.85
2.85
3.00
1.20
1.30
V
OUT2
(V)
1.20
1.50
2.50
2.85
3.00
3.30
1.50
1.80
2.50
2.85
3.00
3.30
1.80
2.50
2.85
2.85
3.00
1.80
3.30
2.50
2.80
2.85
1.50
3.00
3.30
3.00
3.30
3.00
1.80
2.80
③④
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
V
OUT1
(V)
1.50
1.80
2.80
2.80
2.80
1.20
3.60
1.20
3.30
3.00
3.30
1.30
2.60
3.10
1.50
2.60
3.40
2.85
3.30
1.80
3.10
1.50
3.30
3.00
3.30
V
OUT2
(V)
2.80
2.80
2.80
3.00
3.30
3.60
1.20
2.80
2.00
3.30
3.30
1.50
2.80
3.30
2.60
3.30
3.40
2.60
1.80
1.20
3.10
3.10
2.80
2.80
3.00
*For other output voltage combinations, please contact your local Torex sales office or representative.
3/26
XC6420
Series
■BLOCK
DIAGRAMS
* Diodes inside the circuits are ESD protection diodes and parasitic diodes.
■ABSOLUTE
MAXIMUM RATINGS
PARAMETER
Input Voltage
Output Current
Output Voltage 1 / Output Voltage2
EN1/EN2 Input Voltage
SOT-26
Power Dissipation
Pd
SYMBOL
V
IN
I
OUT1
+I
OUT2
V
OUT1
/V
OUT2
V
EN1
/V
EN2
RATINGS
Vss-0.3∼+7.0
600
(*1)
V
SS
-0.3∼V
IN
+0.3
V
SS
-0.3∼+7.0
250
600 (PCB mounted)
(*2)
100
600 (PCB mounted)
USP-6B04
Operating Ambient Temperature
Storage Temperature
(*1)
(*2)
UNITS
V
mA
V
V
USPN-6
mW
(*2)
600 (PCB mounted)
(*2)
Topr
Tstg
-40∼+85
-55∼+125
℃
℃
Please use within the range of Pd > { (V
IN
-V
OUT1
)×I
OUT1
+ (V
IN
-V
OUT2
)×I
OUT2
}
This is a reference data taken by using the test board. Please refer to 22∼24 for detail information of test condition.
4/26
XC6420
Series
■ELECTRICAL
CHARACTERISTICS
●XC6420
series
Regulator 1, Regulator 2
(*8)
PARAMETER
Output Voltage
Maximum Output
Current
Load Regulation
Dropout Voltage
(*5)
Supply Current
Stand-by Current
SYMBOL
V
OUT(E)
(*2)
Ta=25℃
CONDITIONS
V
EN
=V
IN
, I
OUT
=10mA
V
EN
=V
IN
V
EN
=V
IN
0.1mA≦I
OUT
≦150mA
I
OUT
=150mA, V
EN
=V
IN
V
EN
=V
IN
I
OUT
=0mA
V
EN
=V
SS
2.5V≦V
IN
≦5.0V
（V
OUT(T)
≦2.0V）
V
EN
=V
IN
, I
OUT
=30mA
V
OUT(T)
+0.5V≦V
IN
≦5.5V
（V
OUT(T)
≧2.05V）
V
EN
=V
IN
, I
OUT
=30mA
-
V
EN
=V
IN
, I
OUT
=10mA
-40℃≦Ta≦85℃
V
EN
=V
IN
V
IN
{V
OUT(T)
+1.0}+0.5Vp-pAC
I
OUT
=30mA, f=1kHz
V
EN
=V
IN
V
EN
=V
IN
V
OUT
=V
SS
-
-
V
EN
=V
IN
=5.5V
V
EN
=V
SS
V
IN
=5.5V, V
EN
=V
SS
V
OUT
=2.0V
MIN.
V
OUT(T)
×0.98
(*3)
TYP.
V
OUT(T)
-
25
(*4)
MAX.
V
OUT(T)
×1.02
(*3)
UNITS
V
mA
mV
mV
μA
μA
CIRCUITS
①
①
①
①
②
②
I
OUTMAX
ΔV
OUT
Vdif
I
SS
I
STB
150
-
-
45
See “OUTPUT VOLTAGE CHART”
-
-
55
0.01
105
0.1
Line Regulation
ΔV
OUT
/
(ΔV
IN
・V
OUT
)
-
0.02
0.1
%/V
①
Input Voltage
Output Voltage
Temperature
Characteristics
(R&D Value)
Power Supply
Rejection Ratio
Limit Current
Short Current
EN”H”Level Voltage
EN”L”Level Voltage
EN”H”Level Current
EN”L”Level Current
C
L
Discharge Resistor
V
IN
ΔV
OUT
/
(ΔTopr・
V
OUT
)
PSRR
I
LIM
I
SHORT
V
ENH
V
ENL
I
ENH
I
ENL
R
DCHG
1.6
-
-
±100
5.5
-
V
ppm
/℃
①
①
-
150
-
1.0
-
2.5
-0.1
-
75
250
50
-
-
6.0
-
300
-
-
-
5.5
0.3
9.1
0.1
-
dB
mA
mA
V
V
μA
μA
Ω
③
①
①
①
①
①
①
①
NOTE:
Unless otherwise stated, V
IN
=V
OUT(T)
+1V, I
OUT
=1mA, C
IN
=C
L
=1.0μF.
（*1）V
OUT(E)
: Effective output voltage
（*2）Characteristics
of the actual V
OUT(E)
by setting output voltage is shown in the voltage chart.
（*3）V
OUT(T)
: Nominal output voltage
（*4）Vdif＝{V
IN1
−V
OUT1
}
V
IN1
: The input voltage when V
OUT1
appears as input voltage is gradually decreased.
V
OUT1
: A voltage equal to 98% of the output voltage whenever an amply stabilized I
OUT
{V
OUT(T)
+1.0V} is input.
（*5）E-1
: See the dropout voltage chart
（*6）Each
channel is measured when the other channel is turned off (V
EN
=V
SS
).
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