XC6401
Series
Dual LDO Regulators, Low ESR Cap. Compatible
ETR0309_005
■GENERAL
DESCRIPTION
The XC6401 series are highly accurate, Dual, low noise, CMOS LDO voltage regulators. Performance features of the series
includes low output noise, high ripple rejection ratio, low dropout and very fast turn-on times.
The XC6401 includes a reference voltage source, error amplifiers, driver transistors, current limiters and phase
compensators internally. The XC6401’s current limiters' foldback circuit also operates as a short protect for the output current
limiter. The output voltage for each regulator is set independently by laser trimming. Voltages are selectable in 50mV steps
within a range of 0.8V to 5.0V. The XC6401 series is also fully compatible with low ESR ceramic capacitors, reducing cost
and improving output stability.
This high level of output stability is maintained even during frequent load fluctuations, due to the excellent transient response
performance and high PSRR achieved across a broad range of frequencies. The EN function allows the output of each
regulator to be turned off independently, resulting in greatly reduced power consumption. The XC6401 series is available in
the SOT-26W or USP-6B, USP-6C ‘chip-scale’ package.
■APPLICATIONS
●Mobile
Phones
●Cordless
phones and
radio communication equipment
●Portable
games
●Cameras,
Video recorders
●Portable
Audio Equipment
●PDAs
■FEATURES
Maximum Output Current
Dropout Voltage
Operating Voltage Range
Output Voltage Range
Highly Accurate
Low Power Consumption
Standby Current
High Ripple Rejection
: More than 150mA (300mA limit)
: 100mV @100mA
: 1.5V ~ 6.0V
: 0.8V~5.0V (50mV increments)
: ±2% (V
OUT
>1.5V)
: ±30mV (V
OUT
≦1.5V)
: 25μA (TYP.)
: Less than 0.1μA (TYP.)
: 70dB @1kHz
Operating Temperature Range
: -40℃ ~ +85℃
Low ESR Capacitor Compatible
: Ceramic capacitor
Low Output Noise
Ultra Small Packages
: SOT-26W,USP-6B,USP-6C
■TYPICAL
APPLICATION CIRCUITS
■TYPICAL
PERFORMANCE
CHARACTERISTICS
●SOT-26W
EN1
V
OUT1
●Interactive
Load Transient Response
6
C
L1
1uF
1
2
V
IN
EN2
V
SS
V
OUT2
5
C
IN
1uF
4
3
C
L2
1uF
●USP-6
1
2
C
IN
1uF
3
EN2 V
OUT2
V
IN
V
OUT1
EN1 V
SS
6
5
4
C
L1
1uF
C
L2
1uF
1/24
XC6401
Series
■PIN
CONFIGURATION
VOUT1
6
6
VSS
5
VOUT2
4
1
EN1
2
VIN
SOT-26W
(TOP VIEW)
3
EN2
USP-6B / 6C
(BOTTOM VIEW)
*The dissipation pad for the USP-6B/C packages
should be solder-plated in recommended mount
pattern and metal masking so as to enhance
mounting strength and heat release.
If the pad needs to be connected to other pins, it
should be connected to the V
SS
pin.
■PIN
ASSIGNMENT
PIN NUMBER
SOT-26W
USP-6B/C
1
3
2
2
3
1
4
6
5
4
6
5
PIN NAME
EN1
V
IN
EN2
V
OUT2
V
SS
V
OUT1
FUNCTION
ON/OFF Control 1
Power Input
ON/OFF Control 2
Output 2
Ground
Output 1
■PRODUCT
CLASSIFICATION
●Selection
Guide
The following options for the Regulator 1, 2, the EN pin logic, internal pull-up / down are available.
●Ordering
Information
XC6401①②③④⑤⑥
DESIGNATOR
DESCRIPTION
Regulator1,
EN type
SYMBOL
E
F
G
H
E
F
G
H
01~
M
⑤
Packaging Types
D
E
⑥
Device Orientation
R
L
DESCRIPTION
: High Active with pull-down resistor
: High Active with no pull-down resistor
: Low Active with pull-up resistor
: Low Active with no pull-up resistor
: High Active with pull-down resistor
: High Active with no pull-down resistor
: Low Active with pull-up resistor
: Low Active with no pull-up resistor
: Internally set sequential number relating output voltage of
each regulators
Regulator 1 Output Voltage Range: 0.8 ~ 5.0 V (50mV increments)
Regulator 2 Output Voltage Range: 0.8 ~ 5.0 V (50mV increments)
: SOT-26W
: USP-6B
: USP-6C
: Embossed tape, standard feed
: Embossed tape, reverse feed
①
②
Regulator2,
EN type
③④
Output Voltage
2/24
XC6401
Series
■ABSOLUTE
MAXIMUM RATINGS
PARAMETER
Input Voltage
Output Current
Output Voltage
EN Pin Voltage
SOT-26W
Power Dissipation
USP-6B
USP-6C
Operating Temperature Range
Storage Temperature Range
* Sum of I
OUT1
and I
OUT2
.
** Pd=(V
IN
-V
OUT1
)xI
OUT1
+(V
IN
-V
OUT2
)xI
OUT2
Ta = 25℃
RATINGS
6.5
700
V
SS
-0.3 ~ V
IN
+0.3
V
SS
-0.3 ~ 6.5
250
100
100
-40 ~ +85
-55 ~ +125
UNITS
V
mA
V
V
mW
℃
℃
SYMBOL
V
IN
I
OUT1
+ I
OUT2
V
OUT
V
EN
Pd
Topr
Tstg
■ELECTRICAL
CHARACTERISTICS
XC6401FFxx
Regulator 1, Regulator 2
PARAMETER
Output Voltage (*3)
Maximum Output Current
Load Regulation
Dropout Voltage
Supply Current
Standby Current
Line Regulation (*7)
Input Voltage
Output Voltage
SYMBOL
V
OUT (E)
I
OUTMAX
△V
OUT
Vdif1
Vdif2
I
SS
I
STB
△V
OUT
△V
IN
・
Ta=25℃
CONDITIONS
V
IN
=V
OUT (T)
+ 1.0V I
OUT
=30mA
V
IN
=V
OUT (T)
+ 1.0V
1mA≦I
OUT
≦100mA
I
OUT
=30mA
I
OUT
=100mA
V
IN
=V
EN
=V
OUT (T)
+ 1.0V,
I
OUT
=0mA
V
IN
=V
OUT (T)
+ 1.0V, V
EN
=V
SS
V
OUT(T)+
1.0V≦V
IN
≦6.0V
V
EN
=V
IN
, I
OUT
=30mA
I
OUT
=30mA
-40℃≦Topr≦85℃
V
IN
=[V
OUT(T)+
1.0]V
DC
+0.
5Vp-pAC
I
OUT
=30mA, f=1kHz
V
IN
=V
OUT (T)
+ 1.0V, V
EN
=V
IN
V
IN
=V
OUT (T)
+ 1.0V, V
EN
=V
IN
MIN.
0.98
150
-
TYP.
V
OUT(T)
-
15
E-1
E-2
-
-
-
1.5
-
-
-
-
1.30
-
V
IN
=V
EN
=V
OUT (T)
+ 1.0V
V
IN
= V
OUT (T)
+ 1.0V, V
EN
=V
SS
-0.10
-0.10
25
0.01
0.01
-
±100
70
300
30
-
-
-
-
45
0.10
0.20
6.0
-
-
-
-
6.0
0.25
0.10
0.10
MAX.
1.02
-
60
UNITS
V
mA
mV
mV
mV
μA
μA
%/V
V
ppm/℃
dB
mA
mA
V
V
μA
μA
CIRCUIT
1
1
1
1
2
3
1
-
1
5
1
1
4
4
4
4
V
OUT
V
IN
△V
OUT
Temperature Characteristics
△Topr ½
V
OUT
Ripple Rejection Rate(*8)
Current Limiter
Short-Circuit Current
EN "High" Voltage
EN "Low" Voltage
EN "High" Current
EN "Low" Current
NOTE
PSRR
I
lim
Ishort
V
ENH
V
ENL
I
ENH
I
ENL
*1: V
OUT(T)=
Specified output voltage
*2: V
OUT(E)=
Effective output voltage
(I.e. the output voltage when "V
OUT(T)
＋1.0V"
is provided at the V
IN
pin while maintaining a certain I
OUT
value).
*3: If V
OUT (T)
≦1.45V,
MIN V
OUT (T)
- 30mV, MAX V
OUT (T)
+ 30mV
(*6)
(*5)
*4: Vdif={V
IN1
-V
OUT1
}
*5: V
OUT1
=A voltage equal to 98% of the output voltage whenever an amply stabilized I
OUT
{V
OUT(T)+
1.0V} is input.
*6: V
IN1
=the input voltage when V
OUT1
appears as input voltage is gradually decreased.
*7: When V
OUT(T)
>4.5V, 5.5V<V
IN
<6.0V
*8: When V
OUT(T)
>4.8V, V
IN
=5.75VDC+0.5Vp-pAC
*9: Unless otherwise stated, V
IN
=V
OUT(T)+
1.0V
3/24
XC6401
Series
■ELECTRICAL
CHARACTERISTICS (Continued)
●Dropout
Voltage
SETTING OUTPUT VOLTAGE
(V)
V
OUT(T)
0.80
0.85
0.90
0.95
1.00
1.05
1.10
1.15
1.20
1.25
1.30
1.35
1.40
1.45
1.50
1.55
1.60
1.65
1.70
1.75
1.80
1.85
1.90
1.95
2.00
2.05
2.10
2.15
2.20
2.25
2.30
2.35
2.40
2.45
2.50
2.55
2.60
2.65
2.70
2.75
2.80
2.85
2.90
2.95
MIN.
0.770
0.820
0.870
0.920
0.970
1.020
1.070
1.120
1.170
1.220
1.270
1.320
1.370
1.420
1.470
1.519
1.568
1.617
1.666
1.715
1.764
1.813
1.862
1.911
1.960
2.009
2.058
2.107
2.156
2.205
2.254
2.303
2.352
2.401
2.450
2.499
2.548
2.597
2.646
2.695
2.744
2.793
2.842
2.891
DETECT VOLTAGE
(V)
V
OUT
MAX.
0.830
0.880
0.930
0.980
1.030
1.080
1.130
1.180
1.230
1.280
1.330
1.380
1.430
1.480
1.530
1.581
1.632
1.683
1.734
1.785
1.836
1.887
1.938
1.989
2.040
2.091
2.142
2.193
2.244
2.295
2.346
2.397
2.448
2.499
2.550
2.601
2.652
2.703
2.754
2.805
2.856
2.907
2.958
3.009
E-1
DROPOUT VOLTAGE 1
(mV)
Vdif 1
TYP.
MAX.
300
200
100
80
65
60
55
700
600
500
400
300
200
100
E-2
DROPOUT VOLTAGE 2
(mV)
Vdif 2
TYP.
MAX.
400
350
270
240
200
180
165
800
700
600
500
400
300
250
50
75
150
200
45
65
140
180
40
60
120
170
35
55
110
160
4/24
XC6401
Series
■DROPOUT
VOLTAGE CHART (Continued)
●Dropout
Voltage (Continued)
SETTING OUTPUT VOLTAGE
(V)
V
OUT(T)
3.00
3.05
3.10
3.15
3.20
3.25
3.30
3.35
3.40
3.45
3.50
3.55
3.60
3.65
3.70
3.75
3.80
3.85
3.90
3.95
4.00
4.05
4.10
4.15
4.20
4.25
4.30
4.35
4.40
4.45
4.50
4.55
4.60
4.65
4.70
4.75
4.80
4.85
4.90
4.95
5.00
MIN.
2.940
2.989
3.038
3.087
3.136
3.185
3.234
3.283
3.332
3.381
3.430
3.479
3.528
3.577
3.626
3.675
3.724
3.773
3.822
3.871
3.920
3.969
4.018
4.067
4.116
4.165
4.214
4.263
4.312
4.361
4.410
4.459
4.508
4.557
4.606
4.655
4.704
4.753
4.802
4.851
4.900
DETECT VOLTAGE
(V)
V
OUT
MAX.
3.060
3.111
3.162
3.213
3.264
3.315
3.366
3.417
3.468
3.519
3.570
3.621
3.672
3.723
3.774
3.825
3.876
3.927
3.978
4.029
4.080
4.131
4.182
4.233
4.284
4.335
4.386
4.437
4.488
4.539
4.590
4.641
4.692
4.743
4.794
4.845
4.896
4.947
4.998
5.049
5.100
E-1
DROPOUT VOLTAGE 1
(mV)
Vdif 1
TYP.
MAX.
E-2
DROPOUT VOLTAGE 2
(mV)
Vdif 2
TYP.
MAX.
30
45
100
150
5/24
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