300mA L.D.O VOLTAGE REGULATOR
LM1117GSF
FEATURES
Output Current up to 300mA
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-23
Moisture Sensitivity Level 3
ORDERING INFORMATION
APPLICATIONS
SOT-23
Device
Active SCSI Terminators
Portable/ Plan Top/ Notebook Computers
High Efficiency Linear Regulators
SMPS Post Regulators
Mother B/D Clock Supplies
Disk Drives
Battery Chargers
Package
LM1117GSF-ADJ
LM1117GSF-x.x
SOT-23-3L
x.x: Output Voltage = 1.2V, 1.5V, 1.8V, 2.5V, 3.3V, and 5.0V
DESCRIPTION
The LM1117GSF is a low power positive-voltage regulator designed to meet 300mA 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 LM1117GSF features very low quiescent current and very low dropout voltage of 1.2V at a full
load and lower as output current decreases. LM1117GSF is available as an adjustable or fixed 1.2V, 1.5V, 1.8V,
2.5V, 3.3V, and 5.0V output voltages. The LM1117GSF is offered in a 3-pin surface mount package SOT-23.
The output capacitor of 10µF or larger is needed for output stability of LM1117GSF as required by most of the
other regulator circuits.
ABSOLUTE MAXIMUM RATINGS
CHARACTERISTIC
SYMBOL
MIN.
MAX.
UNIT
VIN
-
20
V
Lead Temperature (Soldering, 5 seconds)
TSOL
-
260
°C
Operating Junction Temperature Range
TOPR
−40
125
°C
Storage Temperature Range
TSTG
−65
150
°C
DC Input Voltage
Dec. 2020 – Rev 1.2.2
1/13
HTC
300mA L.D.O VOLTAGE REGULATOR
LM1117GSF
ORDERING INFORMATION
VOUT
Package
Order No.
Supplied As
Status
ADJ
SOT-23-3L
LM1117GSF-ADJ
Tape & Reel
Active
1.2V
SOT-23-3L
LM1117GSF-1.2
Tape & Reel
Contact us
1.5V
SOT-23-3L
LM1117GSF-1.5
Tape & Reel
Contact us
1.8V
SOT-23-3L
LM1117GSF-1.8
Tape & Reel
Contact us
2.5V
SOT-23-3L
LM1117GSF-2.5
Tape & Reel
Active
3.3V
SOT-23-3L
LM1117GSF-3.3
Tape & Reel
Active
5.0V
SOT-23-3L
LM1117GSF-5.0
Tape & Reel
Active
Dec. 2020 – Rev 1.2.2
2/13
HTC
300mA L.D.O VOLTAGE REGULATOR
LM1117GSF
PIN CONFIGURATION
VOUT
2
1
3
VIN
GND/ ADJ
SOT-23
PIN DESCRIPTION
Pin No.
Pin Name
Pin Function
1
GND / ADJ
2
VOUT
3
VIN
Ground (Fixed Version) or Adjustable
Output Voltage
Input Voltage
TYPICAL APPLICATION CIRCUITS
< Fixed Version>
VIN
Vin
OUT
Vin
Vout
VIN
OUT
ADJ
GND
CIN
COUT
CIN
10µF
10µF
10µF
Vout
R1
COUT
10µF
R2
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3/13
HTC
300mA L.D.O VOLTAGE REGULATOR
LM1117GSF
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 300mA, 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 300mA, VIN - VREF = 2 V
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 300mA
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 = 300mA, 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 = 0A to 300mA
(TJ = 0 ~ 125°C)
1.152
ΔVLINE
Line Regulation
IO = 0mA , VIN = 2.7V to 12V
0.1
0.2
%
ΔVLOAD
Load Regulation
IO = 10mA to 300mA, 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 = 300mA, f = 120Hz,
VIN - VO = 1.5V, VRIPPLE = 1VPP
SVR
Dec. 2020 – Rev 1.2.2
5
1000
4/13
60
mA
0.003
%
75
dB
HTC
300mA L.D.O VOLTAGE REGULATOR
For 1.5V Output Voltage
SYMBOL
PARAMETER
LM1117GSF
(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 = 0A to 300mA
(TJ = 0 ~ 125°C)
1.470
ΔVLINE
Line Regulation
IO = 0mA , VIN = 3.0V to 12V
0.1
0.2
%
ΔVLOAD
Load Regulation
IO = 0mA to 300mA, VIN = 3.5 V
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 = 300mA, 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 = 0A to 300mA
(TJ = 0 ~ 125°C)
1.764
ΔVLINE
Line Regulation
IO = 0mA , VIN = 3.3V to 12V
0.1
0.2
%
ΔVLOAD
Load Regulation
IO = 0mA to 300mA, VIN = 3.8 V
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 = 300mA, f = 120Hz,
VIN - VO = 3V, VRIPPLE = 1VPP
SVR
Dec. 2020 – Rev 1.2.2
5
1000
5/13
60
mA
100
µV
75
dB
HTC
300mA L.D.O VOLTAGE REGULATOR
For 2.5V Output Voltage
SYMBOL
PARAMETER
LM1117GSF
(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 = 0A to 300mA
(TJ = 0 ~ 125°C)
2.450
ΔVLINE
Line Regulation
IO = 0mA , VIN = 4.0V to 12V
0.1
0.2
%
ΔVLOAD
Load Regulation
IO = 0mA to 300mA, VIN = 4.5 V
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 = 300mA, f = 120Hz,
VIN - VO = 3V, VRIPPLE = 1VPP
SVR
5
1000
For 3.3V Output Voltage
SYMBOL
PARAMETER
60
mA
100
uV
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 = 0A to 300mA
(TJ = 0 ~ 125°C)
3.234
ΔVLINE
Line Regulation
IO = 0mA , VIN = 4.8V to 12V
0.1
0.2
%
ΔVLOAD
Load Regulation
IO = 0mA to 300mA, VIN = 5.3 V
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 = 300mA, f = 120Hz,
VIN - VO = 3V, VRIPPLE = 1VPP
SVR
Dec. 2020 – Rev 1.2.2
5
1000
6/13
60
mA
100
µV
75
dB
HTC
300mA L.D.O VOLTAGE REGULATOR
For 5.0V Output Voltage
SYMBOL
PARAMETER
LM1117GSF
(TJ=25°C, COUT = 10µF unless otherwise specified)
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 = 0A to 300mA
(TJ = 0 ~ 125°C)
4.900
ΔVLINE
Line Regulation
IO = 0mA , VIN = 6.5V to 15V
0.1
0.2
%
ΔVLOAD
Load Regulation
IO = 0mA to 300mA, VIN = 7.0 V
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 = 300mA, f = 120Hz,
VIN - VO = 3V, VRIPPLE = 1VPP
SVR
5
1000
For All Output Voltage
SYMBOL
VD
PARAMETER
Dropout Voltage
100
µV
75
dB
(TJ=25°C, COUT = 10µF unless otherwise specified)
CONDITIONS
IO = 300mA
Temperature Stability
Long Term Stability
1000 hrs, TJ = 125°C
Thermal Regulation
TA = 25°C 30ms Pulse
Dec. 2020 – Rev 1.2.2
60
mA
7/13
MIN.
TYP.
MAX.
UNIT
1.2
V
0.5
%
0.3
%
0.003
%/W
HTC
300mA L.D.O VOLTAGE REGULATOR
LM1117GSF
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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8/13
HTC
300mA L.D.O VOLTAGE REGULATOR
LM1117GSF
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
Dec. 2020 – Rev 1.2.2
9/13
HTC
300mA L.D.O VOLTAGE REGULATOR
LM1117GSF
Fig.4 Voltage Regulator with Reference
Fig.5 Battery Backed-up Regulated Supply
Dec. 2020 – Rev 1.2.2
10/13
HTC
300mA L.D.O VOLTAGE REGULATOR
LM1117GSF
APPLICATION INFORMATION
The LM1117GSF can deliver a continuous current of 300mA 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 300mA may be still undeliverable
due to the restriction of the power dissipation of LM1117GSF. 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
LM1117GSF is available in SOT-23 package. 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 300°C/W for SOT-23
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
θJA-SOT-23
Thermal Resistance Junction-to-Ambient / SOT-23
Rating
Unit
300
°C/W
2
No heat sink / No air flow / No adjacent heat source / 0.066 inch copper area. (TA=25°C)
In case that there is no cooling solution and no heat sink / minimum copper plane area for heat sink, the
maximum allowable power dissipation of each package is as follow:
Dec. 2020 – Rev 1.2.2
11/13
HTC
300mA L.D.O VOLTAGE REGULATOR
Characteristic
Maximum Allowable Power Dissipation at TA=25°C / SOT-23
LM1117GSF
Symbol
Rating
Unit
PDMax-SOT-23
0.333
W
Please note that above maximum allowable power dissipation is based on the minimum copper plane area which does not
exceed the proper footprint of the package.
And the ambient temperature is 25°C.
If proper cooling solution such as heat sink, copper plane area, air flow is applied, the maximum allowable power
dissipation could be increased. However, if the ambient temperature is increased, the allowable power dissipation
would be decreased.
Dec. 2020 – Rev 1.2.2
12/13
HTC
300mA L.D.O VOLTAGE REGULATOR
LM1117GSF
REVISION NOTICE
The description in this data sheet is subject to change without any notice to describe its electrical characteristics
properly.
Dec. 2020 – Rev 1.2.2
13/13
HTC
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