XC6231Series
ETR03090-001
１0V Input, 500mA, High Speed LDO Regulators
■GENERAL DESCRIPTION
XC6231 series are highly precise, low noise, positive voltage LDO regulators which features high ripple rejection and low
dropout. Output voltage is selectable within a range of 0.9V ~ 5.5V. The series is also compatible with low ESR ceramic
capacitors which give added output stability. This stability can be maintained even during load fluctuations due to the excellent
transient response of the series. The current limiter’s foldback circuit operates as a short-circuit protection as well as the
output current limiter for the output pin.
■APPLICATIONS
■FEATURES
●Reference voltage sources
●Multi-function power supplies
Maximum Output Current
: 500mA (600mA limit)
(2.5V≦VOUT≦5.5V)
: 200mV @ 100mA
: 2.0V～10.0V
: 0.9V ～ 5.5V (0.1V increments)
:±2%
:±100ppm/℃(TYP.)
: 35μA (TYP.)
: 65dB @ 10kHz
: Current Limiting
: Ceramic Capacitor Compatible
: - 40℃ ~ + 85℃
: SOT-89-5
: EU RoHS Compliant, Pb Free
Dropout Voltage
Operating Voltage Range
Output Voltage Range
Output Voltage Accuracy
Temperature Coefficient
Low Power Consumption
High Ripple Rejection
Protection circuits
Low ESR Capacitor
Operating Ambient Temperature
Package
Environmentally Friendly
■TYPICAL PERFORMANCE
CHARACTERISTICS
■TYPICAL APPLICATION CIRCUITS
XC6231A182PR-G（VOUT(T)=1.8V）
VIN=3.8V
CIN=1μF(Ceramic), CL=1μF(Ceramic)
Output Voltage:VOUT(V)
2.5
2.0
1.5
Ta=25℃
=-40℃
=85℃
1.0
0.5
0.0
0
100
200
300
400
500
600
700
Output Current:IOUT(mA)
1/11
XC6231Series
■BLOCK DIAGRAM
* Diodes inside the circuit are an ESD protection diode and parasitic diodes.
■PRODUCT CLASSIFICATION
●Ordering Information
XC6231A①②③④⑤-⑥
DESIGNATOR
ITEM
SYMBOL
①②
Output Voltage
09～55
Output Voltage Accuracy
2
Package (Order Unit)
PR-G
③
④⑤-⑥
(*1)
(*1)
DESCRIPTION
0.9V～5.5V (100mV step)
±2%
SOT-89-5 (1,000/Reel)
The “-G” suffix denotes Halogen and Antimony free as well as being fully EU RoHS compliant.
2/11
XC6231
Series
■PIN CONFIGURATION
■PIN ASSIGNMENT
PIN NUMBER
SOT-89-5
PIN NAME
FUNCTIONS
1
2
3
4,5
VIN
VSS
VOUT
NC
Power Supply Input
Ground
Output
No connection
■ABSOLUTE MAXIMUM RATINGS
Ta=25℃
PARAMETER
SYMBOL
RATINGS
UNITS
Input Voltage
VIN
-0.3～+12.0
V
Output Current
IOUT
700 (*1)
mA
Output Voltage
VOUT
- 0.3 ～ VIN + 0.3 or +12.0 (*2)
V
Pd
1000 (when mounted on board)
mW
Operating Ambient Temperature
Topr
-40～+85
℃
Storage Temperature
Tstg
-55～+125
℃
Power Dissipation
SOT-89-5
All voltage ratings are relative to VSS
(*1) Use with I
OUT less than Pd/(VIN-VOUT)
(*2) The maximum value should be either V + 0.3 or +12.0 in the lowest
IN
3/11
XC6231Series
■ELECTRICAL CHARACTERISTICS
MIN.
TYP.
MAX.
UNIT
Ta=25℃
CIRCUIT
×0.98
VOUT(Ｔ)
×1.02
V
①
500
400
-
-
mA
①
15
50
mV
①
PARAMETER
SYMBOL
CONDITIONS
Output Voltage
VOUT(E)
IOUT=30mA
Maximum Output
Current
IOUTMAX
VOUT(T)≧2.5V, VIN=VOUT(T)+2.0V
VOUT(T)<2.5V, VIN=VOUT(T)+2.0V
Load Regulation
∆VOUT
1mA≦IOUT≦100mA
Dropout Voltage1
Vdif1
IOUT=30mA
-
E-1
mV
Dropout Voltage2
Vdif2
IOUT=100mA
-
E-2
mV
Supply Current
IDD
VIN=VOUT(T)+1.0V
VOUT(T)≦0.90V は VIN=2.0V
-
35
70
μA
②
Line Regulation
∆VOUT/
(∆VIN・VOUT)
VOUT(T)+1.0V≦VIN≦10.0V
VOUT(T)≦0.90V, VIN≧2.0V~
IOUT=30mA,
VOUT(T)≦1.75V, IOUT=10mA
-
0.01
0.20
%/V
①
Input Voltage
VIN
10
V
-
Output Temperature
Characteristics
∆VOUT/
(∆Top・VOUT)
Power Supply
Rejection Rate
PSRR
Current Limit
Ilim
Short Circuit Current
Ishot
2
IOUT=30mA
-40℃≦Topr≦85℃
VIN=[VOUT(T)+1.0]V+0.5VP-PAC
VOUT(T)≦1.25V
VIN=2.25+0.5VＰ-ＰAC
IOUT=50mA, ｆ=10kHz
-
±100
-
ppm/℃
①
-
65
-
dB
③
VOUT(T)≧2.5V, VIN=VOUT(T)+2.0V
500
600
-
VOUT(T)<2.5V, VIN=VOUT(T)+2.0V
-
600
-
mA
①
VIN=VOUT(T)+2.0V
VOUT≦1.5, VIN=3.5V
-
30
-
mA
①
NOTE
(*1)
Unless otherwise stated, VIN=VROUT(T)+1.0V. however VOUT≦0.9V : VIN=2.0V
(*2)
VOUT(T): Set output voltage value.
(*3)
VOUT(E): Effective output voltage value.
(The output voltage when an amply stabilized “VOUT(T)+1.0V” is provided at the VIN pin while maintaining a certain IOUT Value).
(*4)
Vdif is defined as follows: Vdif＝{VIN1－VOUT1}.
・VOUT1: 98% of output voltage when VIN is input after stabilizing sufficiently at each IOUT .
・VIN1：As input voltage is gradually reduced, the input voltage at which VOUT1 is output.
4/11
①
XC6231
Series
■ELECTRICAL CHARACTERISTICS
SYMBOL
VOUT(T)
0.90
1.00
1.10
1.20
1.30
1.40
1.50
1.60
1.70
1.80
1.90
2.00
2.10
2.20
2.30
2.40
2.50
2.60
2.70
2.80
2.90
3.00
3.10
3.20
3.30
3.40
3.50
3.60
3.70
3.80
3.90
4.00
4.10
4.20
4.30
4.40
4.50
4.60
4.70
4.80
4.90
5.00
5.10
5.20
5.30
5.40
5.50
E-0
Output Voltage
(V)
VOUT
MIN
MAX
0.870
0.970
1.070
1.170
1.270
1.370
1.470
1.568
1.666
1.764
1.862
1.960
2.058
2.156
2.254
2.352
2.450
2.548
2.646
2.744
2.842
2.940
3.038
3.136
3.234
3.332
3.430
3.528
3.626
3.724
3.822
3.920
4.018
4.116
4.214
4.312
4.410
4.508
4.606
4.704
4.802
4.900
4.998
5.096
5.194
5.292
5.390
0.930
1.030
1.130
1.230
1.330
1.430
1.530
1.632
1.734
1.836
1.938
2.040
2.142
2.244
2.346
2.448
2.550
2.652
2.754
2.856
2.958
3.060
3.162
3.264
3.366
3.468
3.570
3.672
3.774
3.876
3.978
4.080
4.182
4.284
4.386
4.488
4.590
4.692
4.794
4.896
4.998
5.100
5.202
5.304
5.406
5.508
5.610
E-1
Dropout Voltage1
IOUT=30mA
(mV)
Vdif1
TYP
MAX
1100
1000
900
800
700
600
500
400
300
200
120
80
80
80
80
80
70
70
70
70
70
60
60
60
60
60
60
60
60
60
60
60
60
60
60
60
60
60
60
60
60
50
50
50
50
50
50
1110
1010
910
810
710
610
510
410
310
300
150
120
120
120
120
120
100
100
100
100
100
90
90
90
90
90
90
90
90
90
90
80
80
80
80
80
80
80
80
80
80
70
70
70
70
70
70
E-2
Dropout Voltage2
IOUT=100mA
(mV)
Vdif2
TYP
MAX
1150
1050
950
850
750
650
550
500
400
300
280
240
240
240
240
240
220
220
220
220
220
200
200
200
200
200
200
200
200
200
200
180
180
180
180
180
180
180
180
180
180
160
160
160
160
160
160
1200
1100
1000
900
800
700
600
550
450
400
380
350
330
330
310
310
290
290
290
270
270
270
250
250
250
250
250
250
250
250
250
230
230
230
230
230
230
230
230
230
230
210
210
210
210
210
210
5/11
XC6231Series
■TEST CIRCUITS
Circuit ①
VIN
A
CL=**μF
(Ceramic)
VSS
CIN=1μF
(Ceramic)
A
VOUT
V
VIN
RL
Circuit ②
VIN
A
VIN
VOUT
VSS
CIN=1μF
(Ceramic)
Circuit ③
VIN
VSS
VIN={VOUT(T)+1.0V}VDC+0.5Vp-pAC
V
・VOUT(T)≦1.2V
VIN=2.25VDC+0.5Vp-pAC
* Output Capacitor (CL) Corresponding Chart
6/11
VOUT
CL
0.9 ～ 1.2V
More than equal to 4.7μF
1.3 ～ 1.7V
More than equal to 2.2μF
1.8 ～ 5.5V
More than equal to 1.0μF
VOUT
CL=**μF
(Ceramic)
V
IOUT=50mA
XC6231
Series
■OPERATIONAL EXPLANATION
The XC6231 series controls the output voltage, divided by resistors R1 & R2 which are connected to the VOUT pin is compared
with the internal reference voltage by the error amplifier.
The P-channel MOSFET connected to the VOUT pin, is then driven by the subsequent output signal. The output voltage at the
VOUT pin is controlled & stabilized by negative feedback.
The current limit circuit and short protect circuit operate in relation to the level of output current.
<Low ESR Capacitors>
With the XC6231series regulator, a stable output voltage is achievable even if low ESR capacitors are used, as a phase
compensation circuit is built-in to the regulator. In order to ensure the effectiveness of the phase compensation, we suggest that
an output capacitor (CL) be connected as close as possible, between the output pin (VOUT) and the VSS pin. Please use an output
capacitor (CL) with a capacitance, based on the chart below. We also suggest an input capacitor (CIN) of 1μF : this should be
connected between VIN and VSS in order to stabilize input power source.
Output Capacitor Corresponding Chart
VOUT
CL
0.9 ～ 1.2V
More than equal to 4.7μF
1.3 ～ 1.7V
More than equal to 2.2μF
1.8 ～ 5.5V
More than equal to 1.0μF
<Current Limiter, Short-Circuit Protection>
XC6231series regulator offers a combination of current limit and circuit protection by means of a built-in fixed current limiter
circuit and a foldback circuit. When the load current reaches the current limit level, the fixed current limiter circuit operates
and output voltage drops. As a result of this drop in output voltage, the foldback circuit operates, the output voltage drops
further and output current decreases. When the output pin is shorted, a current of about 50mA flows.
■NOTES ON USE
1) Please use this IC within the stated absolute maximum ratings. The IC is liable to malfunction should the ratings be
exceeded.
2) Where wiring impedance is high, operations may become unstable due to noise and/or phase lag depending on output
current. Please strengthen VIN and VSS wiring in particular.
3) Please wire the input capacitor (CIN) and the output capacitor (CL) as close to the IC as possible.
Should rapid input fluctuation or load fluctuation occur, please increase the capacitor value such as CIN or CL to stabilize the
operation.
4) Torex places an importance on improving our products and its reliability.
However, by any possibility, we would request user fail-safe design and post-aging treatment on system or equipment.
7/11
（0.3)
（1.8)
（0.4)
8/11
（0.4)
1.5±0.1
(0.1)
0.8 MIN
4.35 MAX
2.5±0.1
0.8 MIN
XC6231Series
■PACKAGING INFORMATION
●SOT-89-5 (unit: mm)
XC6231
Series
●SOT-89-5 Power Dissipation
Power dissipation data for the SOT-89-5 is shown in this page.
The value of power dissipation varies with the mount board conditions.
Please use this data as the reference data taken in the following condition.
1. Measurement Condition
Condition:
Mount on a board
Ambient:
Natural convection
Soldering:
Lead (Pb) free
Board:
Dimensions 40mm×40mm (1600mm2 in one side)
Copper (Cu) traces occupy 50% of the board area
in top and back faces
Package heat-sink is tied to the copper traces.
Material:
Glass Epoxy (FR-4)
Thickness:
1.6mm
Through-hole: 5 x 0.8 Diameter
2. Power Dissipation vs. Ambient temperature
Evaluation Board (Unit: mm)
Board Mount (Tjmax=125℃)
Ambient Temperature (℃)
25
85
Power Dissipation Pd (mW)
1300
520
Thermal Resistance (℃/W)
76.92
Power
Dissipation: Pd (mW)
許容損失Pd（mW）
Pd-Ta特性グラフ
Pd vs. Ta
1400
1200
1000
800
600
400
200
0
25
45
65
85
Ambient
Temperature: Ta (℃)
周囲温度Ta（℃）
105
125
9/11
XC6231Series
■MARKING RULE
●SOT-89-5
① represents product series
⑤
1
2
MARK
PRODUCT SERIES
1
XC6231A*****-G
② represents regulator type and output voltage range
①
④
4
③
2
②
5
3
MARK
OUTPUT VOLTAGE (V)
H
0.9～3.8
K
3.9～5.5
PRODUCT SERIES
XC6231A*****-G
③ represents output voltage
MARK
OUTPUT
VOLTAGE
(V)
MARK
OUTPUT
VOLTAGE
(V)
0
0.9
3.9
F
2.4
5.4
1
1.0
4.0
H
2.5
5.5
2
1.1
4.1
K
2.6
-
3
1.2
4.2
L
2.7
-
4
1.3
4.3
M
2.8
-
5
1.4
4.4
N
2.9
-
6
1.5
4.5
P
3.0
-
7
1.6
4.6
R
3.1
-
8
1.7
4.7
S
3.2
-
8
1.8
4.8
T
3.3
-
A
1.9
4.9
U
3.4
-
B
2.0
5.0
V
3.5
-
C
2.1
5.1
X
3.6
-
D
2.2
5.2
Y
3.7
-
E
2.3
5.3
Z
3.8
-
④⑤ represents production lot number
01～09, 0A～0Z, 11～9Z, A1～A9, AA～AZ, B1～ZZ in order.
(G, I, J, O, Q, W excluded)
10/11
XC6231
Series
1. The products and product specifications contained herein are subject to change without
notice to improve performance characteristics.
Consult us, or our representatives
before use, to confirm that the information in this datasheet is up to date.
2. We assume no responsibility for any infringement of patents, patent rights, or other
rights arising from the use of any information and circuitry in this datasheet.
3. Please ensure suitable shipping controls (including fail-safe designs and aging
protection) are in force for equipment employing products listed in this datasheet.
4. The products in this datasheet are not developed, designed, or approved for use with
such equipment whose failure of malfunction can be reasonably expected to directly
endanger the life of, or cause significant injury to, the user.
(e.g. Atomic energy; aerospace; transport; combustion and associated safety
equipment thereof.)
5. Please use the products listed in this datasheet within the specified ranges.
Should you wish to use the products under conditions exceeding the specifications,
please consult us or our representatives.
6. We assume no responsibility for damage or loss due to abnormal use.
7. All rights reserved. No part of this datasheet may be copied or reproduced without the
prior permission of TOREX SEMICONDUCTOR LTD.
11/11