1A LOWDROP OUT VOLTAGE REGULATOR (ADJUSTABLE & FIXED) LM1117
FEATURES
● Output Current up to 1 A
● Low Dropout Voltage ( 700mV at 1A Output Current )
● Three Terminal Adjustable or Fixed 1.5V, 1.8V, 2.5V, 2.85V,
3.0V, 3.3V, 5.0V
● 2.85V Device for SCSI-II Active Terminator
● 0.04% Line Regulaion, 0.1% Load Regulation
● Very Low Quiescent Current
● Internal Current andTerminal Limit
● Logic-Controlled Electronics Shutdown
● Surface Mount Package SOT-223 & TO-263 (D2-Pack)
● 100% Thermal Limit Burn-In
APPLICATION
● Active SCSI Terminators
● Portable/Plan Top/Notebook Computers
● High Efficiency Linear Regulators
● SMPS Post Regulators ORDERING INFORMATION
● Mother B/D Clock Supplies Package
● Disk Drives
● Battery Chargers
DESCRIPTION (X=Output Voltage=1.5V, 1.8V, 2.5V, 2.85V,
'3.0V, 3.3V, 5.0V, Adjustable=AD)
The LM1117 is a low power positive-voltage regulator designed to meet 1A output current and comply
with SCSI-II specifications with a fixed output voltage of 2.85V. 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 700mV at a full load and
lower as output current decreases. LM1117 is available as an adjustable or fixed 1.5V, 1.8V, 2.5V, 2.85V,
3.0V, 3.3V, and 5.0V output voltages.
The LM1117 is offered in a 3-pin surface mount package SOT-223 & TO-263. The output capacitor of
10㎌ or larger is needed for output stability of LM1117 as required by most of the other regulator circuits.
ABSOLUTE MAXIMUM RATINGS
HTC
LM1117T
LM1117T-XX TO-263 (D2)
Device (Marking)
SOT-223
LM1117S
LM1117S-XX
MIN. UNIT
℃
V
0
7
125
℃
-65 150
Lead Temperature (Soldering, 5 Seconds) TSOL
℃
1
CHARACTERISTIC
DC Input Voltage
Operating Junction Temperature Range
SYMBOL
VIN
TOPR
Storage Temperature Range TSTG
MAX.
260
1 2 3
SOT-223 PKG (FRONT VIEW)
PIN FUNCTION
1. Adj/Gnd
2. Vout
3. Vin
TO-263 (D2 PKG, FRONT VIEW)
PIN FUNCTION
1. Adj/Gnd
2. Vout
3. Vin
1 2 3
1A LOWDROP OUT VOLTAGE REGULATOR (FIXED & ADJUSTABLE) LM1117
THERMAL DATA
TYPICAL APPLICATION
ELECTRICAL CHARACTERISTICS FOR LM1117 S/T-AD(ADJUSTABLE)
(Refer to the test circuits, TJ=0 to 125℃ CO=10㎌ unless otherwise specified)
Reference Voltage VIN
- VO = 2V, IO = 100㎃, TJ = 25℃
Reference Voltage IO = 10 to 1A, VIN
- VO = 1.4 to 10V
Line Regulation VIN
- VO = 1.5 to 13.75V, I O = 10㎃
Load Regulation VIN
- VO = 3V, IO = 10mA to 1A
Temperature Stability
Long Term Stability 1000 hrs, TJ = 125℃
Operating Input Voltage
Adjustment Pin Current VIN
≤ 15V, ILoad =10㎃
Adjustment Pin Current
Change
Minimum Load Current VIN
= 15V
Output Current VIN
- VO = 5V, TJ=25℃
Output Noise (%VO)B = 10㎐ to 10㎑, TJ = 25℃
IO = 40㎃ , f = 120㎐, TJ = 25℃
VIN
- VO = 3V, VNIPPLE
= 1VPP
IO = 100㎃ , VIN=VOUT+ 0.8V
IO = 500㎃ , VIN=VOUT+ 0.8V
IO = 1A , VIN=VOUT+ 0.8V
Thermal Regulation TA = 25℃ 30㎳ Pulse
HTC
2
㏈
㎂
V
1.3
%/W
120
Supply Voltage Rejection SVR 7560
ΔIADJ VIN
- VO = 1.4 to 10V, IO = 10mA to 1A 1
㎂
IO(MIN)
IADJ 50
㎃
V
%
IO800 950 1200
V
VD
Dropout Voltage 1.00 1.15
1.0
1 1.1
EN0.003
5
1.7 5
0.003
㎃
%
VIN 7V
ΔVO0.3
%
ΔVO0.5 %
ΔVO0.1 0.4
V
ΔVO0.035 0.2 %
VREF 1.230 1.270
PARAMETER SYMBOL
VREF
TEST CONDITION
1.238 1.25 1.262 V
MIN. TYP. MAX. UNIT
℃
PARAMETER SYMBOL
Thermal Resistance Junction-Case RTHJ-CASE 15 3
UNITSOT-223 TO-263
VI
N
LM1117
100㎌ 10㎌
1A LOWDROP OUT VOLTAGE REGULATOR (FIXED & ADJUSTABLE) LM1117
ELECTRICAL CHARACTERISTICS FOR LM1117 S/T-1.5
(Refer to the test circuits, TJ=0 to 125℃ CO=10㎌ unless otherwise specified)
Output Voltage VIN
= 4.5V, IO = 10㎃, TJ = 25℃
Output Voltage IO = 0 to 1A, VIN
= 3.9 to 10V
Line Regulation VIN
= 3.9 to 10V, IO = 0㎃
Load Regulation VIN
= 3.9V, IO = 0 to 1A
Temperature Stability
Long Term Stability 1000 hrs, TJ = 125℃
Operating Input Voltage IO = 100㎃
Quiescent Current VIN
≤ 10V
Output Current VIN
= 7.5V, TJ = 25℃
Output Noise Voltage B = 10㎐ to 10㎑, TJ = 25℃
IO = 40㎃ , f = 120㎐, TJ = 25℃
VIN
= 5.5V, VNIPPLE
= 1VPP
IO = 100㎃
IO = 500㎃
IO = 800㎃
Thermal Regulation TA = 25℃ 30㎳ Pulse
ELECTRICAL CHARACTERISTICS FOR LM1117 S/T-1.8
(Refer to the test circuits, TJ=0 to 125℃ CO=10㎌ unless otherwise specified)
Output Voltage VIN
= 4.5V, IO = 10㎃, TJ = 25℃
Output Voltage IO = 0 to 1A, VIN
= 3.9 to 10V
Line Regulation VIN
= 3.9 to 10V, IO = 0㎃
Load Regulation VIN
= 3.9V, IO = 0 to 1A
Temperature Stability
Long Term Stability 1000 hrs, TJ = 125℃
Operating Input Voltage IO = 100㎃
Quiescent Current VIN
≤ 10V
Output Current VIN
= 7.5V, TJ = 25℃
Output Noise Voltage B = 10㎐ to 10㎑, TJ = 25℃
IO = 40㎃ , f = 120㎐, TJ = 25℃
VIN
= 5.5V, VNIPPLE
= 1VPP
IO = 100㎃
IO = 500㎃
IO = 800㎃
Thermal Regulation TA = 25℃ 30㎳ Pulse
HTC
1.15 V
1.1 1.2 V
㏈
Dropout Voltage VD
1 1.1 V
1.05
Supply Voltage Rejection SVR 60 75
V
ID510㎃
VIN 7
%
ΔVO0.3 %
ΔVO0.5
㎷
ΔVO0.08 0.4 ㎷
ΔVO0.04 0.2
V
VO1.475 1.525 V
VO1.485 1.5
PARAMETER SYMBOL TEST CONDITION MIN. TYP. MAX. UNIT
0.003 %/W
TYP. MAX. UNIT
V
950 1200
1.515
㎃
EN100 ㎶
IO800
PARAMETER SYMBOL TEST CONDITION MIN.
1.828
VO1.782 1.8 1.818
0.4
V
ΔVO0.04 0.2 ㎷
VO1.772
㎷
ΔVO0.5 %
ΔVO0.08
10
%
VIN 7V
ΔVO0.3
㎃
IO800 950 1200 ㎃
ID5
㎶
Supply Voltage Rejection SVR 60 75 ㏈
EN100
Dropout Voltage VD
1
1.1
1.1 V
1.05 1.15 V
3
1.2 V
0.003 %/W
1A LOWDROP OUT VOLTAGE REGULATOR (FIXED & ADJUSTABLE) LM1117
ELECTRICAL CHARACTERISTICS FOR LM1117 S/T-2.5
(Refer to the test circuits, TJ=0 to 125℃ CO=10㎌ unless otherwise specified)
Output Voltage VIN
= 4.5V, IO = 10㎃, TJ = 25℃
Output Voltage IO = 0 to 1A, VIN
= 3.9 to 10V
Line Regulation VIN
= 3.9 to 10V, IO = 0㎃
Load Regulation VIN
= 3.9V, IO = 0 to 1A
Temperature Stability
Long Term Stability 1000 hrs, TJ = 125℃
Operating Input Voltage IO = 100㎃
Quiescent Current VIN
≤ 10V
Output Current VIN
= 7.5V, TJ = 25℃
Output Noise Voltage B = 10㎐ to 10㎑, TJ = 25℃
IO = 40㎃ , f = 120㎐, TJ = 25℃
VIN
= 5.5V, VNIPPLE
= 1VPP
IO = 100㎃
IO = 500㎃
IO = 800㎃
Thermal Regulation TA = 25℃ 30㎳ Pulse
ELECTRICAL CHARACTERISTICS FOR LM1117 S/T-2.85
(Refer to the test circuits, TJ=0 to 125℃ CO=10㎌ unless otherwise specified)
Output Voltage VIN
= 4.85V, IO = 10㎃, TJ = 25℃
Output Voltage IO = 0 to 1A, VIN
= 4.25 to 10V
Line Regulation VIN
= 4.25 to 10V, IO = 0㎃
Load Regulation VIN
= 4.25V, IO = 0 to 1A
Temperature Stability
Long Term Stability 1000 hrs, TJ = 125℃
Operating Input Voltage IO = 100㎃
Quiescent Current VIN
≤ 10V
Output Current VIN
= 7.85V, TJ = 25℃
Output Noise Voltage B = 10㎐ to 10㎑, TJ = 25℃
IO = 40㎃ , f = 120㎐, TJ = 25℃
VIN
= 5.85V, VNIPPLE
= 1VPP
IO = 100㎃
IO = 500㎃
IO = 800㎃
Thermal Regulation TA = 25℃ 30㎳ Pulse
HTC
1.2 V
0.003 %/W
1.1 V
1.05 1.15 V
Dropout Voltage VD
1
1.1
㎶
Supply Voltage Rejection SVR 60 75 ㏈
EN100
VIN
㎃
ID510
IO800 950 1200
0.08
ΔVO0.3 %
V
㎃
2.821
2.805
7
VO
㎷
ΔVO0.5 %
ΔVO
ΔVO
0.01 0.1
V
1.1
0.4
1.2 V
%/W
㎷
2.895 V
EN
Dropout Voltage VD
1
1.1
1.05
Supply Voltage Rejection SVR 60 75
IO800 950 1200
100
V
㎃
2.879
㎶
㏈
V
1.15
PARAMETER SYMBOL TEST CONDITION MIN.
510㎃
TYP. MAX. UNIT
2.85
%
VIN 7V
ΔVO0.3
㎷
ΔVO0.5 %
ΔVO0.08 0.4
0.04 0.2 ㎷
VO2.46 2.54
2.5 2.525 V
V
PARAMETER SYMBOL TEST CONDITION MIN. UNITMAX.TYP.
2.475
ΔVO
ID
VO
VO
0.004 0.2
4
1A LOWDROP OUT VOLTAGE REGULATOR (FIXED & ADJUSTABLE) LM1117
ELECTRICAL CHARACTERISTICS FOR LM1117 S/T-3.0
(Refer to the test circuits, TJ=0 to 125℃ CO=10㎌ unless otherwise specified)
Output Voltage VIN
= 5V, IO = 10㎃, TJ = 25℃
Output Voltage IO = 0 to 1A, VIN
= 4.5 to 10V
Line Regulation VIN
= 4.5 to 12V, IO = 0㎃
Load Regulation VIN
= 4.5V, IO = 0 to 1A
Temperature Stability
Long Term Stability 1000 hrs, TJ = 125℃
Operating Input Voltage IO = 100㎃
Quiescent Current VIN
≤ 12V
Output Current VIN
= 8V, TJ = 25℃
Output Noise Voltage B = 10㎐ to 10㎑, TJ = 25℃
IO = 40㎃ , f = 120㎐, TJ = 25℃
VIN
= 6V, VNIPPLE
= 1VPP
IO = 100㎃
IO = 500㎃
IO = 800㎃
Thermal Regulation TA = 25℃ 30㎳ Pulse
ELECTRICAL CHARACTERISTICS FOR LM1117 S/T-3.3
(Refer to the test circuits, TJ=0 to 125℃ CO=10㎌ unless otherwise specified)
Output Voltage VIN
= 5.3V, IO = 10㎃, TJ = 25℃
Output Voltage IO = 0 to 1A, VIN
= 4.75 to 10V
Line Regulation VIN
= 4.75 to 15V, IO = 0㎃
Load Regulation VIN
= 4.75V, IO = 0 to 1A
Temperature Stability
Long Term Stability 1000 hrs, TJ = 125℃
Operating Input Voltage IO = 100㎃
Quiescent Current VIN
≤ 15V
Output Current VIN
= 8.3V, TJ = 25℃
Output Noise Voltage B = 10㎐ to 10㎑, TJ = 25℃
IO = 40㎃ , f = 120㎐, TJ = 25℃
VIN
= 6.3V, VNIPPLE
= 1VPP
IO = 100㎃
IO = 500㎃
IO = 800㎃
Thermal Regulation TA = 25℃ 30㎳ Pulse
HTC
%/W0.003
1.15 V
1.1 1.2 V
㏈
Dropout Voltage VD
1 1.1 V
1.05
Supply Voltage Rejection SVR 60 75
㎃
EN100 ㎶
IO800 950 1200
V
ID510㎃
VIN 7
%
ΔVO0.3 %
ΔVO0.5
㎷
ΔVO0.08 0.4 ㎷
ΔVO0.04 0.2
V
VO3.247 3.353 V
VO3.267 3.3 3.333
TYP. MAX. UNIT
0.003 0.1
PARAMETER SYMBOL TEST CONDITION MIN.
1.15 V
%/W
1.1 1.2 V
㏈
Dropout Voltage VD
1 1.1 V
1.05
Supply Voltage Rejection SVR 60 75
㎃
EN100 ㎶
IO800 950 1200
V
ID510㎃
VIN 7
%
ΔVO0.3 %
ΔVO0.5
㎷
ΔVO0.08 0.4 ㎷
ΔVO0.04 0.2
V
VO2.95 3.05 V
VO2.97 3 3.03
PARAMETER SYMBOL TEST CONDITION MIN. TYP. MAX. UNIT
5
1A LOWDROP OUT VOLTAGE REGULATOR (FIXED & ADJUSTABLE) LM1117
ELECTRICAL CHARACTERISTICS FOR LM1117 S/T-5.0
(Refer to the test circuits, TJ=0 to 125℃ CO=10㎌ unless otherwise specified)
Output Voltage VIN
= 7V, IO = 10㎃, TJ = 25℃
Output Voltage IO = 0 to 1A, VIN
= 6.5 to 15V
Line Regulation VIN
= 6.5 to 15V, IO = 0㎃
Load Regulation VIN
= 6.5V, IO = 0 to 1A
Temperature Stability
Long Term Stability 1000 hrs, TJ = 125℃
Operating Input Voltage IO = 100㎃
Quiescent Current VIN
≤ 15V
Output Current VIN
= 8.3V, TJ = 25℃
Output Noise Voltage B = 10㎐ to 10㎑, TJ = 25℃
IO = 40㎃ , f = 120㎐, TJ = 25℃
VIN
= 6.3V, VNIPPLE
= 1VPP
IO = 100㎃
IO = 500㎃
IO = 800㎃
Thermal Regulation TA = 25℃ 30㎳ Pulse
LM1117 (ADJUSTABLE) ELECTRICAL CHARACTERISTICS
Figure 1. Figure 2.
1A Current Output Typical Adjustable Regulator
HTC
6
1.2 V
0.003 %/W
1.1 V
1.05 1.15 V
Dropout Voltage VD
1
1.1
㎃
IO
EN
Supply Voltage Rejection SVR 60 75 ㏈
ID510
PARAMETER TEST CONDITION
VIN
ΔVO
1200 ㎃
100 ㎶
800 950
%
7V
0.3
㎷
ΔVO0.5 %
ΔVO0.08 0.4
V
ΔVO0.04 0.2 ㎷
VO4.92 5.08
UNIT
VO4.95 5 5.05 V
SYMBOL MIN. TYP. MAX.
VIN
C1
LM1117
IN
ADJ
OUT
LOAD
R1
VIN
C1
LM1117
IN
ADJ
IADJ
50㎂
OUT
R1
C2
R2
VOUT
VREF
VOUT
=VREF
(1+R2/R1)+IADJ
R2
1A LOWDROP OUT VOLTAGE REGULATOR (FIXED & ADJUSTABLE) LM1117
Fi
g
ure 3. Ne
g
ative Su
pp
l
y
FLOATING INPUT
Figure 4. Active Terminator for SCSI-2 BUS
HTC
7
LM1117S,T-50
IN OUT
GND
VIN
++
100㎌
10㎌ VOUT
=-5V
4.75V
TO
5.25V
+
10㎌
LM1117S,T-28
IN (2.85V)
GND +22㎌
110
110
110
110
18-27
LINES
1A LOWDROP OUT VOLTAGE REGULATOR (FIXED & ADJUSTABLE) LM1117
Figure 5. Voltage Regulator With Reference
Figure 6. Battery Backed-up Regulated Supply
HTC
8
LM1117S,T-50
IN OUT
GND 100㎌
10㎌
VIN
>11.5V
SELECT FOR
CHARGE VALUE
+
10㎌
LM1117S,T-50
IN OUT
GND
+
100㎌
5.2V LINE
5.0 BATTERY
+
10V
+
5VOUT
VIN
LM1117S,T-50
IN OUT
GND
+
10㎌
6.5V
50Ω
