1A L.D.O VOLTAGE REGULATOR
LM1117
FEATURES
SOT-223 PKG
Output Current up to 1.0A
Low Dropout Voltage (1.2V at 1.0A Output current)
Three Terminal Adjustable(ADJ) or Fixed 1.2V, 1.5V,
1.8V, 2.5V, 3.3V, and 5.0V
Line Regulation typically at 0.1% typ.
Load Regulation typically at 0.2% typ.
Internal Current and Thermal Protection
Maximum Input Voltage 20V
Surface Mount Package SOT-223, TO-252, and SOT-89
Moisture Sensitivity Level 3
TO-252 PKG
SOT-89 PKG
APPLICATIONS
Active SCSI Terminators
Portable/ Plan Top/ Notebook Computers
High Efficiency Linear Regulators
SMPS Post Regulators
Mother B/D Clock Supplies
Disk Drives
Battery Chargers
ORDERING INFORMATION
Device
Package
LM1117S-ADJ
LM1117S-x.x
LM1117RS-ADJ
LM1117RS-x.x
LM1117F-ADJ
LM1117F-x.x
SOT-223 3L
TO-252 3L
SOT-89 3L
x.x: Output Voltage = 1.2V, 1.5V, 1.8V, 2.5V, 3.3V, and 5.0V
DESCRIPTION
The LM1117 is a low power positive-voltage regulator designed to meet 1A output current. This device is an
excellent choice for use in battery-powered applications, as active terminators for the SCSI bus, and portable
computers. The LM1117 features very low quiescent current and very low dropout voltage of 1.2V at a full load
and lower as output current decreases. LM1117 is available as an adjustable or fixed 1.2V, 1.5V, 1.8V, 2.5V, 3.3V,
and 5.0V output voltages. The LM1117 is offered in a 3-pin surface mount package SOT-223, TO-252 & SOT-89.
The output capacitor of 10µF or larger is needed for output stability of LM1117 as required by most of the other
regulator circuits.
ABSOLUTE MAXIMUM RATINGS
CHARACTERISTIC
SYMBOL
MIN.
MAX.
UNIT
VIN
-
20
V
Lead Temperature
TSOL
-
260
°C
Storage Temperature Range
TSTG
−65
150
°C
Operating Junction Temperature Range
TOPR
−40
125
°C
Input Supply Voltage
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HTC
1A L.D.O VOLTAGE REGULATOR
LM1117
ORDERING INFORMATION
VOUT
ADJ
1.2V
1.5V
1.8V
2.5V
3.3V
5.0V
Package
Order No.
Package Marking
Supplied As
Status
SOT-223
LM1117S-ADJ
1117C ADJ
Tape & Reel
Active
TO-252
LM1117RS-ADJ
LM1117C ADJ
Tape & Reel
Active
SOT-89
LM1117F-ADJ
1117C ADJ
Tape & Reel
Active
SOT-223
LM1117S-1.2
1117C 1.2
Tape & Reel
Active
TO-252
LM1117RS-1.2
LM1117C 1.2
Tape & Reel
Active
SOT-89
LM1117F-1.2
1117C 1.2
Tape & Reel
Active
SOT-223
LM1117S-1.5
1117C 1.5
Tape & Reel
Active
TO-252
LM1117RS-1.5
LM1117C 1.5
Tape & Reel
Active
SOT-89
LM1117F-1.5
1117C 1.5
Tape & Reel
Active
SOT-223
LM1117S-1.8
1117C 1.8
Tape & Reel
Active
TO-252
LM1117RS-1.8
LM1117C 1.8
Tape & Reel
Active
SOT-89
LM1117F-1.8
1117C 1.8
Tape & Reel
Active
SOT-223
LM1117S-2.5
1117C 2.5
Tape & Reel
Active
TO-252
LM1117RS-2.5
LM1117C 2.5
Tape & Reel
Active
SOT-89
LM1117F-2.5
1117C 2.5
Tape & Reel
Active
SOT-223
LM1117S-3.3
1117C 3.3
Tape & Reel
Active
TO-252
LM1117RS-3.3
LM1117C 3.3
Tape & Reel
Active
SOT-89
LM1117F-3.3
1117C 3.3
Tape & Reel
Active
SOT-223
LM1117S-5.0
1117C 5.0
Tape & Reel
Active
TO-252
LM1117RS-5.0
LM1117C 5.0
Tape & Reel
Active
SOT-89
LM1117F-5.0
1117C 5.0
Tape & Reel
Active
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HTC
1A L.D.O VOLTAGE REGULATOR
LM1117
PIN CONFIGURATIONS
SOT-223
TO-252
SOT-89
PIN DESCRIPTION
Pin No.
Pin Name
SOT-223
TO-252
SOT-89
1
1
1
ADJ / GND
2
2
2
VOUT
3
3
3
VIN
Pin Function
Adjustable or Ground (Fixed Version)
Output Voltage
Input Voltage
TYPICAL APPLICATION CIRCUITS
< Fixed Version>
Vin
OUT
VIN
VIN
Vin
Vout
OUT
ADJ
GND
CIN
COUT
CIN
10µF
10µF
10µF
Vout
R1
COUT
10µF
R2
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HTC
1A L.D.O VOLTAGE REGULATOR
LM1117
ELECTRICAL CHARACTERISTICS
For ADJ Output Voltage
SYMBOL
PARAMETER
(TJ=25°C, COUT = 10µF unless otherwise specified)
CONDITIONS
MIN.
TYP.
MAX.
UNIT
1.250
1.262
V
1.281
V
VREF
Reference Voltage
VIN = 5V, IO = 10mA
1.238
VREF
Reference Voltage
IO = 10mA to 1A, VIN - VREF = 1.5V to
13.75V (TJ = 0 ~ 125°C)
1.219
ΔVLINE
Line Regulation
IO = 10mA , VIN - VREF = 1.5V to 12V
0.1
0.2
%
ΔVLOAD
Load Regulation
IO = 10mA to 1A, VIN - VREF = 2V
0.2
0.4
%
12
V
VIN
Operating Input Voltage
IADJ
Adjustment pin Current
VIN - VREF = 1.5V to 12V, IO = 100mA
50
120
µA
ΔIADJ
Adjustment Pin Current
Change
VIN - VREF = 1.5V to 12V,
IO = 100mA to 1A
0.5
5
µA
IO(MIN)
Minimum Load Current
VIN = 5V, VREF = 0V
5
10
mA
IO
Current Limit
VIN - VREF = 5V
eN
Output Noise (%VO)
B = 10Hz to 10kHz, TJ = 25°C
Supply Voltage Rejection
IO = 1A, f = 120Hz,
VIN - VREF = 3V, VRIPPLE = 1VPP
SVR
1000
For 1.2V Output Voltage
SYMBOL
PARAMETER
60
mA
0.003
%
75
dB
(TJ=25°C, COUT = 10µF unless otherwise specified)
CONDITIONS
MIN.
TYP.
MAX.
UNIT
1.200
1.224
V
1.248
V
VO
Output Voltage
VIN = 2.7V, IO = 10mA
1.176
VO
Output Voltage
VIN = 2.7V to 12V, IO = 0mA to 1A
(TJ = 0 ~ 125°C)
1.152
ΔVLINE
Line Regulation
IO = 10mA , VIN = 2.7V to 12V
0.1
0.2
%
ΔVLOAD
Load Regulation
IO = 10mA to 1A, VIN = 3.2V
0.2
0.4
%
12
V
10
mA
VIN
Operating Input Voltage
ID
Quiescent Current
VIN - VO = 5V
IO
Current Limit
VIN - VO = 5V
eN
Output Noise (%VO)
B = 10Hz to 10kHz, TJ = 25°C
Supply Voltage Rejection
IO = 1A, f = 120Hz,
VIN - VO = 1.5V, VRIPPLE = 1VPP
SVR
Dec. 2020 – Rev 3.0.2
5
1000
4/12
60
mA
0.003
%
75
dB
HTC
1A L.D.O VOLTAGE REGULATOR
For 1.5V Output Voltage
SYMBOL
PARAMETER
LM1117
(TJ=25°C, COUT = 10µF unless otherwise specified)
CONDITIONS
MIN.
TYP.
MAX.
UNIT
1.5
1.515
V
1.530
V
VO
Output Voltage
VIN = 3.0V, IO = 10mA
1.485
VO
Output Voltage
VIN = 3.0V to 12V, IO = 0mA to 1A
(TJ = 0 ~ 125°C)
1.470
ΔVLINE
Line Regulation
IO = 10mA , VIN = 3.0V to 12V
0.1
0.2
%
ΔVLOAD
Load Regulation
IO = 10mA to 1A, VIN = 3.5V
0.2
0.4
%
12
V
10
mA
VIN
Operating Input Voltage
ID
Quiescent Current
VIN - VO = 5V
IO
Current Limit
VIN - VO = 5V
eN
Output Noise(%VO)
B = 10Hz to 10kHz, TJ = 25°C
Supply Voltage Rejection
IO = 1A, f = 120Hz,
VIN - VO = 3V, VRIPPLE = 1VPP
SVR
5
1000
For 1.8V Output Voltage
SYMBOL
PARAMETER
60
mA
100
µV
75
dB
(TJ=25°C, COUT = 10µF unless otherwise specified)
CONDITIONS
MIN.
TYP.
MAX.
UNIT
1.8
1.818
V
1.836
V
VO
Output Voltage
VIN = 3.3V, IO = 10mA
1.782
VO
Output Voltage
VIN = 3.3V to 12V, IO = 0mA to 1A
(TJ = 0 ~ 125°C)
1.764
ΔVLINE
Line Regulation
IO = 10mA , VIN = 3.3V to 12V
0.1
0.2
%
ΔVLOAD
Load Regulation
IO = 10mA to 1A, VIN = 3.8V
0.2
0.4
%
12
V
10
mA
VIN
Operating Input Voltage
ID
Quiescent Current
VIN - VO = 5V
IO
Current Limit
VIN - VO = 5V
eN
Output Noise(%VO)
B = 10Hz to 10kHz, TJ = 25°C
Supply Voltage Rejection
IO = 1A, f = 120Hz,
VIN - VO = 3V, VRIPPLE = 1VPP
SVR
Dec. 2020 – Rev 3.0.2
5
1000
5/12
60
mA
100
µV
75
dB
HTC
1A L.D.O VOLTAGE REGULATOR
For 2.5V Output Voltage
SYMBOL
PARAMETER
LM1117
(TJ=25°C, COUT = 10µF unless otherwise specified)
CONDITIONS
MIN.
TYP.
MAX.
UNIT
2.5
2.525
V
2.550
V
VO
Output Voltage
VIN = 4.0V, IO = 10mA
2.475
VO
Output Voltage
VIN = 4.0V to 12V, IO = 0mA to 1A
(TJ = 0 ~ 125°C)
2.450
ΔVLINE
Line Regulation
IO = 10mA , VIN = 4.0V to 12V
0.1
0.2
%
ΔVLOAD
Load Regulation
IO = 10mA to 1A, VIN = 4.5V
0.2
0.4
%
12
V
10
mA
VIN
Operating Input Voltage
ID
Quiescent Current
VIN - VO = 5V
IO
Current Limit
VIN - VO = 5V
eN
Output Noise(%VO)
B = 10Hz to 10kHz, TJ = 25°C
Supply Voltage Rejection
IO = 1A, f = 120Hz,
VIN - VO = 3V, VRIPPLE = 1VPP
SVR
5
1000
For 3.3V Output Voltage
SYMBOL
PARAMETER
60
mA
100
µV
75
dB
(TJ=25°C, COUT = 10µF unless otherwise specified)
CONDITIONS
MIN.
TYP.
MAX.
UNIT
3.3
3.333
V
3.366
V
VO
Output Voltage
VIN = 4.8V, IO = 10mA
3.267
VO
Output Voltage
VIN = 4.8V to 12V, IO = 0mA to 1A
(TJ = 0 ~ 125°C)
3.234
ΔVLINE
Line Regulation
IO = 10mA , VIN = 4.8V to 12V
0.1
0.2
%
ΔVLOAD
Load Regulation
IO = 10mA to 1A, VIN = 5.3V
0.2
0.4
%
12
V
10
mA
VIN
Operating Input Voltage
ID
Quiescent Current
VIN - VO = 5V
IO
Current Limit
VIN - VO = 5V
eN
Output Noise(%VO)
B = 10Hz to 10kHz, TJ = 25°C
Supply Voltage Rejection
IO = 1A, f = 120Hz,
VIN - VO = 3V, VRIPPLE = 1VPP
SVR
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5
1000
6/12
60
mA
100
µV
75
dB
HTC
1A L.D.O VOLTAGE REGULATOR
For 5.0V Output Voltage
SYMBOL
LM1117
(TJ=25°C, COUT = 10µF unless otherwise specified)
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
5.0
5.050
V
5.100
V
VO
Output Voltage
VIN = 6.5V, IO = 10mA
4.950
VO
Output Voltage
VIN = 6.5V to 15V, IO = 0mA to 1A
(TJ = 0 ~ 125°C)
4.900
ΔVLINE
Line Regulation
IO = 10mA , VIN = 6.5V to 15V
0.1
0.2
%
ΔVLOAD
Load Regulation
IO = 10mA to 1A, VIN = 7.0V
0.2
0.4
%
15
V
10
mA
VIN
Operating Input Voltage
ID
Quiescent Current
VIN - VO = 5V
IO
Current Limit
VIN - VO = 5V
eN
Output Noise(%VO)
B = 10Hz to 10kHz, TJ = 25°C
Supply Voltage Rejection
IO = 1A, f = 120Hz,
VIN - VO = 3V, VRIPPLE = 1VPP
SVR
5
1000
For All Output Voltage
SYMBOL
VD
CONDITIONS
µV
75
dB
TYP.
MAX.
UNIT
IO = 100mA
1.0
1.1
V
IO = 500mA
1.1
1.2
V
IO = 1A
1.2
1.3
V
Temperature Stability
Long Term Stability
1000 hrs, TJ = 125°C
Thermal Regulation
TA = 25°C 30ms Pulse
Dec. 2020 – Rev 3.0.2
100
(TJ=25°C, COUT = 10µF unless otherwise specified)
PARAMETER
Dropout Voltage
60
mA
7/12
MIN.
0.5
%
0.3
%
0.003
%/W
HTC
1A L.D.O VOLTAGE REGULATOR
LM1117
TYPICAL OPERATING CHARACTERISTICS
1.6
VIN = VOUT + 3.0V
IOUT = 10mA
1.5
VIN – VOUT, DROPOUT VOLTAGE (V)
OUTPUT VOLTAGE CHANGE(%)
2.0
1.0
ADJ, 1.5V, 1.8V, 2.5V
0.5
0
5.0V
-0.5
-1.0
-1.5
1.4
TJ = -40℃
1.2
1.0
TJ = 25℃
TJ = 125℃
0.8
0.6
0.4
0.2
0
-2.0
-50
-25
0
25
50
75
100
125
150
0
100
200
400
500
600
800
1000
IOUT, OUTPUT CURRENT(mA)
FREE-AIR TEMPERATURE-℃
DROPOUT VOLTAGE VS OUTPUT CURRENT
OUTPUT VOLTAGE CHANGE VS TEMPERATURE
20
IQ, QUIESCENT CURRENT CHANGE (%)
90
80
IADJ, ADJUST PIN CURRENT
300
70
60
IOUT = 10mA
50
40
30
20
15
10
5
0
-5
-10
-15
-20
10
-50
-25
0
25
50
75
100
125
150
-50
-25
0
25
50
75
100
125
150
TA - AMBIENT TEMPERATURE (℃)
TA - AMBIENT TEMPERATURE (℃)
ADJ PIN CURRENT VS TEMPERATURE
QUIESCENT CURRENT CHANGE VS TEMPERATURE
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HTC
1A L.D.O VOLTAGE REGULATOR
LM1117
APPLICATION CIRCUITS
Fig.1 300mA Current Output
Fig.2 Typical Adjustable Regulator
IN
VIN
LM1117-5.0
+
OUT
+
GND
10uF
100uF
VOUT = -5V
Floating Input
Fig.3 Negative Supply
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HTC
1A L.D.O VOLTAGE REGULATOR
LM1117
Fig.4 Voltage Regulator with Reference
Fig.5 Battery Backed-up Regulated Supply
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HTC
1A L.D.O VOLTAGE REGULATOR
LM1117
APPLICATION INFORMATION
The LM1117 can deliver a continuous current of 1A over the full operating junction temperature range. However,
the output current is limited by the restriction of power dissipation which differs from packages. A heat sink may
be required depending on the maximum power dissipation and maximum ambient temperature of application.
With respect to the applied package, the maximum output current of 1A may be still undeliverable due to the
restriction of the power dissipation of LM1117. Under all possible conditions, the junction temperature must be
within the range specified under operating conditions. The temperatures over the device are given by:
TC = TA + PD × θCA /
TJ = TC + PD × θJC /
TJ = TA + PD × θJA
where TJ is the junction temperature, TC is the case temperature, TA is the ambient temperature, PD is the total
power dissipation of the device, θCA is the thermal resistance of case-to-ambient, θJC is the thermal resistance of
junction-to-case, and θJA is the thermal resistance of junction to ambient. The total power dissipation of the device
is given by:
PD = PIN − POUT = (VIN × IIN) − (VOUT × IOUT)
= (VIN × (IOUT + IGND)) − (VOUT × IOUT) = (VIN − VOUT) × IOUT + (VIN × IGND)
where IGND is the operating ground current of the device which is specified at the Electrical Characteristics. The
maximum allowable temperature rise (TRmax) depends on the maximum ambient temperature (TAmax) of the
application, and the maximum allowable junction temperature (TJmax):
TRmax = TJmax − TAmax
The maximum allowable value for junction-to-ambient thermal resistance, θJA, can be calculated using the
formula:
θJA = TRmax / PD = (TJmax − TAmax) / PD
LM1117 is available in SOT223, TO252 and SOT89 packages. The thermal resistance depends on amount of
copper area or heat sink, and on air flow. If the maximum allowable value of θJA calculated above is over 137°C/W
for SOT-223 package, over 105 °C/W for TO-252 package, over 315 °C/W for SOT-89 package, no heat sink is
needed since the package can dissipate enough heat to satisfy these requirements. If the value for allowable θJA
falls near or below these limits, a heat sink or proper area of copper plane is required. In summary, the absolute
maximum ratings of thermal resistances are as follow:
Characteristic
Symbol
Rating
Unit
Thermal Resistance Junction-to-Ambient / SOT-223
θJA-SOT-223
137
°C/W
Thermal Resistance Junction-to-Ambient / TO-252
θJA-TO-252
105
°C/W
Thermal Resistance Junction-to-Ambient / SOT-89
θJA-SOT-89
315
°C/W
No heat sink / No air flow / No adjacent heat source / TA=25°C
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HTC
1A L.D.O VOLTAGE REGULATOR
LM1117
REVISION NOTICE
The description in this data sheet is subject to change without any notice to describe its electrical characteristics
properly.
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