ME6118
1A Adjustable Voltage High Speed LDO Regulators ME6118 Series
General Description
Features
The ME6118 series are highly accurate, low noise,
Output Current in Excess of 1A
LDO Voltage Regulators that are capable of
Dropout Voltage:80mV@ IOUT =100mA
providing an output current that is in excess of 1A
（ME6118A33）
with a maximum dropout voltage of 1.3V at 1A
Operating Voltage Range: 2.5V～18V
（ME6118A33）.This series contains four fixed
Highly Accuracy: ±2％
output voltages of 1.2V, 1.8V, 2.5V and 3.3V that
Adjustable Output Voltage Option
have no minimum load requirement to maintain
Standby Current: 52uA（TYP.）
regulation.
the
High Ripple Rejection: 70dB@1KHz（ME6118A33）
reference/output voltage to within ±2% accuracy.
Line Regulation: 2mV（TYP.）
Internal protection features consist of output
Temperature Stability≤0.5%
current limiting, safe operating area compensation,
Thermal Shutdown Protection：160℃
On
chip
trimming
adjusts
and thermal shutdown. The ME6118series can
operate with up to 18V input.
Package
Typical Application
Consumer and Industrial Equipment Point of
Regulation
Switching Power Supply Post Regulation
Hard Drive Controllers
Battery Chargers
3-pin SOT223 ，SOT23-3
Typical Application Circuit
V09
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Page 1 of 15
ME6118
Selection Guide
ME 6118X X X X X G
Environment mark
Package:
B3-SOT223
M3-SOT23-3
Output Voltage
Function
Product Type
Product Series
Microne
product series
V09
product description
ME6118A12B3G
VOUT =1.2V； Package：SOT223
ME6118A18B3G
VOUT =1.8V； Package：SOT223
ME6118A25B3G
VOUT =2.5V； Package：SOT223
ME6118A33B3G
VOUT =3.3V； Package： SOT223
ME6118A50B3G
VOUT =5.0V； Package：SOT223
ME6118E25B3G
VOUT =2.5V； Package：SOT223； Different pin
ME6118E33B3G
VOUT =3.3V； Package：SOT223； Different pin
ME6118A33M3G
VOUT =3.3V； Package：SOT23-3
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Page 2 of 15
ME6118
Pin Configuration
SOT223
SOT23-3
Pin Assignment
ME6118AXX
Pin Number
Pin Name
Functions
SOT223
SOT23-3
1
1
GND
Ground
2
2
VOUT
Output
3
3
VIN
Power Input
Pin Name
Functions
ME6118EXX
Pin Number
SOT223
1
GND
Ground
2
VIN
Power Input
3
VOUT
Output
Absolute Maximum Ratings
Parameter
Symbol
Ratings
Units
Input Voltage
VIN
18
V
Output Current
IOUT
1.1
A
Output Voltage
VOUT
Vss-0.3～VIN +0.3
V
Power Dissipation
SOT223
SOT23-3
PD
750
300
mW
Operating Temperature Range
TOPR
－40～＋125
℃
Storage Temperature Range
TSTG
－40～＋150
℃
Lead Temperature
V09
260℃，4sec
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Page 3 of 15
ME6118
Block Diagram
Electrical Characteristics
ME6118A12/E12 (Packages:SOT223)
(VIN= VOUT+1.3V，CIN=CL=10uF，Ta=25OC, unless otherwise noted)
Parameter
Symbol
Conditions
Min.
Typ.
Max.
Units
Output Voltage
VOUT(E)
(Note 2)
IOUT=10mA,
VIN= VOUT+1.3V
X 0.98
VOUT (T)
(Note 1)
X 1.02
V
Maximum Output
Current
IOUTMAX
VIN= VOUT+1.3V
800
mA
Load Regulation
∆VOUT
VIN= VOUT+1.3V ,
1mA≤IOUT≤800mA
3
mV
VDIF1
IOUT =100mA
195
mV
VDIF2
IOUT =400mA
665
mV
VDIF3
IOUT =800mA
1250
mV
VDIF4
IOUT =1000mA
1600
mV
Quiescent Current
Iss
VIN= VOUT+1.3V
53
uA
Line Regulation
∆VOUT
IOUT =0mA
VOUT+1.3V ≤VIN≤18V
2
mV
Thermal Shutdown
Protection
Tsd
IOUT=10mA,
VIN= VOUT+1.3V
155
℃
Over Current
Protection
Ilimit
VIN=3V
1.1
A
Dropout Voltage
(Note 3)
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Page 4 of 15
ME6118
ME6118A18/E18 (Packages:SOT223)
(VIN= VOUT+1.2V，CIN=CL=10uF，Ta=25OC, unless otherwise noted)
Parameter
Symbol
Conditions
Min.
Typ.
Max.
Units
Output Voltage
VOUT(E)
(Note 2)
IOUT=10mA
VIN= VOUT+1.2V
X 0.98
VOUT (T)
(Note 1)
X 1.02
V
Maximum Output
Current
IOUTMAX
VIN= VOUT+1.2V
800
mA
Load Regulation
∆VOUT
VIN= VOUT+1.2V ,
1mA≤IOUT≤800mA
5
mV
VDIF1
IOUT =100mA
115
mV
VDIF2
IOUT =400mA
450
mV
VDIF3
IOUT =800mA
940
mV
VDIF4
IOUT =1000mA
1600
mV
Quiescent Current
Iss
VIN= VOUT+1.2V
52
uA
Line Regulation
∆VOUT
IOUT =0mA
VOUT+1.2V ≤VIN≤18V
2
mV
Thermal Shutdown
Protection
Tsd
IOUT=10mA
VIN= VOUT+1.2V
160
℃
Over Current
Protection
Ilimit
VIN=3.5V
1.1
A
Dropout Voltage
(Note 3)
ME6118A25/E25 (Packages:SOT223)
(VIN= VOUT+1.2V，CIN=CL=10uF，Ta=25OC, unless otherwise noted)
Parameter
Symbol
Conditions
Min.
Typ.
Max.
Units
Output Voltage
VOUT(E)
(Note 2)
IOUT=10mA,
VIN= VOUT+1.2V
X 0.98
VOUT (T)
(Note 1)
X 1.02
V
Maximum Output
Current
IOUTMAX
VIN= VOUT+1.2V
800
mA
Load Regulation
∆VOUT
VIN= VOUT+1.2V ,
1mA≤IOUT≤800mA
5
mV
VDIF1
IOUT =100mA
90
mV
VDIF2
IOUT =500mA
450
mV
VDIF3
IOUT =800mA
790
mV
VDIF4
IOUT =1000mA
1300
mV
Iss
VIN= VOUT+1.2V
53
uA
Line Regulation
∆VOUT
IOUT =0mA
VOUT+1.2V ≤VIN≤18V
2
mV
Thermal Shutdown
Protection
Tsd
IOUT=10mA,
VIN= VOUT+1.2V
160
℃
Over Current
Protection
Ilimit
VIN=4.0V
1.1
A
Dropout Voltage
(Note 3)
Quiescent Current
V09
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Page 5 of 15
ME6118
ME6118A33/E33 (Packages:SOT223)
(VIN= VOUT+1.2V，CIN=CL=10uF，Ta=25OC, unless otherwise noted)
Parameter
Symbol
Conditions
Min.
Typ.
Max.
Units
Output Voltage
VOUT(E)
(Note 2)
IOUT=10mA,
VIN= VOUT+1.2V
X 0.98
VOUT (T)
(Note 1)
X 1.02
V
Maximum Output
Current
IOUTMAX
VIN= VOUT+1.2V
800
mA
Load Regulation
∆VOUT
VIN= VOUT+1.2V ,
1mA≤IOUT≤800mA
7
mV
VDIF1
IOUT =100mA
80
mV
VDIF2
IOUT =500mA
400
mV
VDIF3
IOUT =800mA
680
mV
VDIF4
IOUT =1000mA
1300
mV
Quiescent Current
Iss
VIN= VOUT+1.2V
53
uA
Line Regulation
∆VOUT
IOUT =0mA
VOUT+1.2V ≤VIN≤18V
2
mV
Thermal Shutdown
Protection
Tsd
IOUT=10mA,
VIN= VOUT+1.2V
160
℃
Over Current
Protection
Ilimit
VIN=5.0V
1.1
A
Dropout Voltage
(Note 3)
ME6118A33 (Package: SOT23-3 )
(VIN= VOUT+1.2V，CIN=CL=10uF，Ta=25OC, unless otherwise noted)
Parameter
Symbol
Conditions
Min.
Typ.
Max.
Units
Output Voltage
VOUT(E)
(Note 2)
IOUT=10mA,
VIN= VOUT+1.2V
X 0.98
VOUT (T)
(Note 1)
X 1.02
V
Maximum Output
Current
IOUTMAX
VIN= VOUT+1.2V
500
600
mA
Load Regulation
∆VOUT
VIN= VOUT+1.2V ,
1mA≤IOUT≤500mA
10
mV
VDIF1
IOUT =100mA
70
mV
Dropout Voltage
(Note 3)
VDIF2
IOUT =300mA
220
mV
VDIF3
IOUT =500mA
385
mV
Quiescent Current
Iss
VIN= VOUT+1.2V
53
uA
Line Regulation
∆VOUT
IOUT =0mA
VOUT+1.2V ≤VIN≤18V
2
mV
Thermal Shutdown
Protection
Tsd
IOUT=10mA,
VIN= VOUT+1.2V
160
℃
Over Current
Protection
Ilimit
VIN=5.0V
1.1
A
V09
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Page 6 of 15
ME6118
ME6118A50/E50 (Packages:SOT223)
(VIN= VOUT+1.2V，CIN=CL=10uF，Ta=25OC, unless otherwise noted)
Parameter
Symbol
Conditions
Min.
Typ.
Max.
Units
Output Voltage
VOUT(E)
(Note 2)
IOUT=10mA,
VIN= VOUT+1.2V
X 0.98
VOUT (T)
(Note 1)
X 1.02
V
Maximum Output
Current
IOUTMAX
VIN= VOUT+1.2V
800
mA
Load Regulation
∆VOUT
VIN= VOUT+1.2V ,
1mA≤IOUT≤800mA
8
mV
VDIF1
IOUT =100mA
60
mV
VDIF2
IOUT =500mA
300
mV
VDIF3
IOUT =800mA
500
mV
VDIF4
IOUT =1000mA
900
mV
Quiescent Current
Iss
VIN= VOUT+1.2V
53
uA
Line Regulation
∆VOUT
IOUT =0mA
VOUT+1.2V ≤VIN≤18V
2
mV
Thermal Shutdown
Protection
Tsd
IOUT=10mA,
VIN= VOUT+1.2V
160
℃
Over Current
Protection
Ilimit
VIN=6.5V
1.1
A
Dropout Voltage
(Note 3)
Note ：
1. VOUT (T) ：Specified Output Voltage
2.VOUT (E) ：Effective Output Voltage ( ie. The output voltage when “VOUT (T)+1.2V”is provided at the Vin pin while
maintaining a certain Iout value.)
3.VDIF：VIN1 –VOUT (E)’
VIN1 ：The input voltage when VOUT(E)’ appears as input voltage is gradually decreased.
VOUT (E)’=A voltage equal to 98% of the output voltage whenever an amply stabilized Iout and {VOUT
(T)+1.2V} is input.
V09
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Page 7 of 15
ME6118
Type Characteristics
（1） Output Voltage VS. Output Current
ME6118A12B3G（VIN=VOUT+1.3V）
ME6118A18B3G（VIN=VOUT+1.2V）
Output Voltage VS.Output Current
1.23
1.85
1.22
1.83
Output Voltage(V)
Output Voltage(V)
Output Voltage VS.Output Current
1.21
1.20
1.19
1.18
1.17
1.16
1.81
1.79
1.77
1.75
1.73
1.71
0
100
200
300
400
500
600
700
800
0
100
200
Output Current(mA)
Output Voltage(V)
Output Voltage(V)
300
400
500
700
800
600
700
600
700
800
3.33
3.32
3.31
3.30
3.29
3.28
3.27
3.26
0
800
100
200
300
400
500
Output Current(mA)
Output Current(mA)
（2） Output Voltage VS. Temperature
ME6118A12B3G（VIN=VOUT+1.3V , IOUT=10mA）
ME6118A18B3G（VIN=VOUT+1.2V , IOUT=10mA）
Output Voltage VS. Temperature
Output Voltage VS. Temperature
1.24
1.85
1.22
1.83
Output Voltage(V)
Output Voltage(V)
600
Output Voltage VS.Output Current
2.53
2.52
2.51
2.50
2.49
2.48
2.47
2.46
200
500
ME6118A33B3G（VIN=VOUT+1.2V）
Output Voltage VS.Output Current
100
400
Output Current(mA)
ME6118A25B3G（VIN=VOUT+1.2V）
0
300
1.20
1.18
1.16
1.14
1.12
1.81
1.79
1.77
1.75
1.73
0
30
60
90
120
150
30
60
90
120
150
Temperature(℃)
Temperature(℃)
V09
0
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Page 8 of 15
ME6118
ME6118A25B3G（VIN=VOUT+1.2V , IOUT=10mA）
ME6118A33B3G（VIN=VOUT+1.2V , IOUT=10mA）
Output Voltage VS. Temperature
2.54
3.34
2.52
3.32
Output Voltage(V)
Output Voltage(V)
Output Voltage VS. Temperature
2.50
2.48
2.46
2.44
2.42
3.30
3.28
3.26
3.24
3.22
0
30
60
90
120
150
0
30
60
Temperature(℃)
90
120
150
Temperature(℃)
（3）Dropout Voltage VS. Output Current（Ta = 25 °C）
ME6118A12B3G
ME6118A18B3G
Dropout Voltage VS.Output Current
Dropout Voltage VS.Output Current
1000
Dropout Voltage(mV)
Dropout Voltage(mV)
1400
1200
1000
800
600
400
200
0
800
600
400
200
0
0
100
200
300
400
500
600
700
800
0
100
200
Output Current(mA)
Dropout Voltage(mV)
Dropout Voltage(mV)
600
700
800
700
800
Dropout Voltage VS.Output Current
1000
800
600
400
200
0
200
300
400
500
600
700
800
Output Current(mA)
V09
500
ME6118A33B3G
Dropout Voltage VS.Output Current
100
400
Output Current(mA)
ME6118A25B3G
0
300
700
600
500
400
300
200
100
0
0
100
200
300
400
500
600
Output Current(mA)
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Page 9 of 15
ME6118
（4）Output Voltage VS. Input Voltage（Ta = 25 °C）
ME6118A12B3G
ME6118A18B3G
Output Voltage VS.Input Voltage
Output Voltage VS.Input Voltage
1.89
1.86
1.21
Output Voltage(V)
Output Voltage(V)
1.22
1.20
1.19
1.18
1.17
1.16
1.83
1.80
1.77
1.74
1.15
2
4
6
8
10
12
14
16
1.71
18
2
4
6
8
Input Voltage(V)
ME6118A25B3G
14
16
18
Output Voltage VS.Input Voltage
2.53
3.32
2.52
Output Voltage(V)
Output Voltage(V)
12
ME6118A33B3G
Output Voltage VS.Input Voltage
2.51
2.50
2.49
2.48
2.47
2.46
2
4
6
8
10
12
14
16
3.31
3.30
3.29
3.28
3.27
3.26
2
18
4
6
8
（5）Quiescent Current VS. Input Voltage
ME6118A12B3G
Quiescent Current(uA)
55
50
45
40
35
30
25
6
8
10
12
14
16
18
Input Voltage(V)
V09
14
16
18
16
18
Quiescent Current VS. Input Voltage
60
4
12
ME6118A18B3G
Quiescent Current VS. Input Voltage
2
10
Input Voltage(V)
Input Voltage(V)
Quiescent Current(uA)
10
Input Voltage(V)
63
58
53
48
43
38
33
28
2
4
6
8
10
12
14
Input Voltage(V)
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Page 10 of 15
ME6118
ME6118A25B3G
ME6118A33B3G
Quiescent Current VS. Input Voltage
65
60
55
50
45
40
35
30
2
4
6
8
10
12
14
16
18
Quiescent Current(uA)
Quiescent Current(uA)
Quiescent Current VS. Input Voltage
70
65
60
55
50
45
40
35
2
4
6
8
10
12
14
16
18
Input Voltage(V)
Input Voltage(V)
Applications Information
1. Input Bypass Capacitor
An input capacitor is recommended. A 10uF tantalum on the input is a suitable input bypassing for almost all
applications.
2. Output Capacitor
The output capacitor is critical in maintaining regulator stability, and must meet the required conditions for both
minimum amount of capacitance and ESR (Equivalent Series Resistance).The minimum output capacitance
required by the ME6118 is 10µF,if a tantalum capacitor is used. Any increase of the output capacitance will
merely improve the loop stability and transient response. The ESR of the output capacitor should be less than
0.5Ω .
3. Load Regulation
The ME6118 regulates the voltage that appears between its output and ground pins, or between its output and
adjust pins. In some cases, line resistances can introduce errors to the voltage across the load. To obtain the
best load regulation, a few precautions are needed. Figure1, shows a typical application using a fixed output
regulator. The Rt1 and Rt2 are the line resistances. It is obvious that the VLOAD is less than the VOUT by the sum of
the voltage drops along the line resistances. In this case, the load regulation seen at the R LOAD would be
degraded from the datasheet specification. To improve this , the load should be tied directly to the output terminal
on the positive side and directly tied to the ground terminal on the negative side.
FIGURE 1. Typical Application using Fixed Output Regulator
V09
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Page 11 of 15
ME6118
Application Circuit
（1）Regulator with Reference
（2）Adjusting Output of Fixed Voltage Regulators
（3）Battery Backed−Up Power Supply
（4）Low Dropout Negative Supply
V09
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Page 12 of 15
ME6118
Packaging Information
● SOT223
V09
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Page 13 of 15
ME6118
● SOT23-3
DIM
Millimeters
Inches
Min
Max
Min
Max
A
2.7
3.1
0.1063
0.122
B
1.7
2.1
0.0669
0.0827
b
0.35
0.5
0.0138
0.0197
C
1.0
1.2
0.0394
0.0472
c
0.1
0.25
0.0039
0.0098
d
0.2
-
0.0079
-
E
2.6
3.0
0.1023
0.1181
e
1.5
1.8
0.059
0.0708
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Page 14 of 15
ME6118
The information described herein is subject to change without notice.
Nanjing Micro One Electronics Inc is not responsible for any problems caused by circuits or diagrams
described herein whose related industrial properties, patents, or other rights belong to third parties.
The application circuit examples explain typical applications of the products, and do not guarantee the
success of any specific mass-production design.
Use of the information described herein for other purposes and/or reproduction or copying without the
express permission of Nanjing Micro One Electronics Inc is strictly prohibited.
The products described herein cannot be used as part of any device or equipment affecting the human
body, such as exercise equipment, medical equipment, security systems, gas equipment, or any
apparatus installed in airplanes and other vehicles, without prior written permission of Nanjing Micro
One Electronics Inc.
Although Nanjing Micro One Electronics Inc exerts the greatest possible effort to ensure high quality
and reliability, the failure or malfunction of semiconductor products may occur. The user of these
products should therefore give thorough consideration to safety design, including redundancy,
fire-prevention measures, and malfunction prevention, to prevent any accidents, fires, or community
damage that may ensue.
V09
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Page 15 of 15
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