UNISONIC TECHNOLOGIES CO., LTD
LR1118
LOW DROP POSITIVE
VOLTAGE REGULATORS
DESCRIPTION
LINEAR INTEGRATED CIRCUIT
The UTC
LR1118
is a low drop voltage regulator able to provide
up to 1A of output current, available also for adjustable version
(V
REF
=1.24V). Output consists of PNP power transistor. So that
dropout voltage can be extremely low.
FEATURES
* 2.85V device are suitable for SCSI-2 active termination
* Output current up to 1A
* Adjustable version available.(V
REF
=1.24V)
* Internal current and thermal limit
ORDERING INFORMATION
Package
SOT-223
TO-220
TO-252
TO-263
TO-263-3
SOP-8
①
Pin Assignment
A: GOI
B: OGI
C: GIO
D: IGO
GOOIxOOx
②
Packing
Ordering Number
Lead Free
Halogen Free
LR1118L-xx-AA3-①-②
LR1118G-xx-AA3-①-②
LR1118L-xx-TA3-①-②
LR1118G-xx-TA3-①-②
LR1118L-xx-TN3-①-②
LR1118G-xx-TN3-①-②
LR1118L-xx-TQ2-①-②
LR1118G-xx-TQ2-①-②
LR1118L-xx-TQ3-①-②
LR1118G-xx-TQ3-①-②
LR1118L-xx-S08-①-②
LR1118G-xx-S08-①-②
Note: 1. Pin assignment: I: V
IN
O: V
OUT
G: GND x: NC
2. xx: Output Voltage, refer to Marking Information.
T: Tube
R: Tape Reel
www.unisonic.com.tw
Copyright © 2014 Unisonic Technologies Co., Ltd
1 of 8
QW-R102-029.J
LR1118
MARKING INFORMATION
PACKAGE
VOLTAGE CODE
LINEAR INTEGRATED CIRCUIT
MARKING
LR1118
SOT-223
Voltage Code
G: Halogen Free
L: Lead Free
Pin Code
Date Code
TO-220
TO-252
TO-263
TO-263-3
12:1.2V
15:1.5V
18:1.8V
25:2.5V
2J:2.85V
30:3.0V
33:3.3V
36:3.6V
50:5.0V
1
2
3
SOP-8
BLOCK DIAGRAM
V
CC
V
CC
Reference
Voltage
+
-
Current
Limit
Therml
Shut Down
V
CC
V
OUT
GND
APPLICATION CIRCUIT
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
2 of 8
QW-R102-029.J
LR1118
ABSOLUTE MAXIMUM RATINGS
PARAMETER
LINEAR INTEGRATED CIRCUIT
SYMBOL
RATINGS
UNIT
DC Input Voltage
V
IN
15
V
Junction Temperature
T
J
+125
°C
Operating Temperature
T
OPR
0 ~ +125
°C
Storage Temperature
T
STG
-40 ~ +150
°C
Note: 1. Absolute maximum ratings are those values beyond which the device could be permanently damaged.
Absolute maximum ratings are stress ratings only and functional device operation is not implied
THERMAL DATA
PARAMETER
SOT-223
SOP-8
TO-252
TO-220/TO-263
TO-263-3
SYMBOL
RATINGS
15
20
8
4
UNIT
Junction to Case
θ
JC
°C/W
ELECTRICAL CHARACTERISTICS
(T
A
=25°C, refer to the test circuits, C
O
=10μF, unless otherwise specified.)
For LR1118-1.2V
PARAMETER
Output Voltage
Line Regulation
Load Regulation
Temperature Stability
Long Term Stability
Operating Input Voltage
Quiescent Current
Output Current
Output Noise Voltage
Supply Voltage Rejection
Dropout Voltage
Thermal Regulation
SYMBOL
V
OUT
TEST CONDITIONS
V
IN
=V
OUT
+1.5V, I
OUT
=10mA
V
IN
=(V
OUT
+2V)~15V, I
OUT
=0 to 1A
V
IN
=(V
OUT
+2V)~15V, I
OUT
=0A
V
IN
=V
OUT
+2V, I
OUT
=0 to 1A
1000 hrs, T
J
=125°C
I
OUT
=100mA
V
IN
10V
V
IN
=V
OUT
+4.5V, T
J
=25°C
B=10Hz~10KHz, T
J
=25°C
I
OUT
=40mA, f=120Hz, T
J
=25°C
V
IN
=V
OUT
+2.5V, V
RIPPLE
=1V
PP
I
OUT
= 100mA
I
OUT
= 1A
30ms Pulse
MIN
1.176
1.176
TYP
1.2
1.2
0.1
2
0.5
0.3
5
1000
100
60
75
0.88
1.10
0.01
0.98
1.20
0.10
MAX
1.224
1.224
0.6
3
UNIT
V
V
%
%
%
%
V
mA
mA
μV
dB
V
%/W
V
OUT
V
IN
I
D
I
OUT
e
N
SVR
V
D
15
10
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
3 of 8
QW-R102-029.J
LR1118
ELECTRICAL CHARACTERISTICS (Cont.)
SYMBOL
V
OUT
TEST CONDITIONS
V
IN
=V
OUT
+1.5V, I
OUT
=10mA
V
IN
=(V
OUT
+2V)~15V, I
OUT
=0 to 1A
V
IN
=(V
OUT
+2V)~15V, I
OUT
=0A
V
IN
=V
OUT
+2V, I
OUT
=0 to 1A
1000 hrs, T
J
=125°C
I
OUT
=100mA
V
IN
10V
V
IN
=V
OUT
+4.5V, T
J
=25°C
B=10Hz~10KHz, T
J
=25°C
I
OUT
=40mA, f=120Hz, T
J
=25°C
V
IN
=V
OUT
+2.5V, V
RIPPLE
=1V
PP
I
OUT
= 100mA
I
OUT
= 1A
30ms Pulse
TEST CONDITIONS
V
IN
=V
OUT
+1.5V, I
OUT
=10mA
V
IN
=(V
OUT
+2V)~15V, I
OUT
=0 to 1A
V
IN
=(V
OUT
+2V)~15V, I
OUT
=0A
V
IN
=V
OUT
+2V, I
OUT
=0 to 1A
1000 hrs, T
J
=125°C
I
OUT
=100mA
V
IN
10V
V
IN
=V
OUT
+4.5V, T
J
=25°C
B=10Hz~10KHz, T
J
=25°C
I
OUT
=40mA, f=120Hz, T
J
=25°C
V
IN
=V
OUT
+2.5V, V
RIPPLE
=1V
PP
I
OUT
= 100mA
I
OUT
= 1A
30ms Pulse
For LR1118-1.5V
PARAMETER
Output Voltage
Line Regulation
Load Regulation
Temperature Stability
Long Term Stability
Operating Input Voltage
Quiescent Current
Output Current
Output Noise Voltage
Supply Voltage Rejection
Dropout Voltage
Thermal Regulation
For LR1118-1.8V
PARAMETER
Output Voltage
Line Regulation
Load Regulation
Temperature Stability
Long Term Stability
Operating Input Voltage
Quiescent Current
Output Current
Output Noise Voltage
Supply Voltage Rejection
Dropout Voltage
Thermal Regulation
SYMBOL
V
OUT
LINEAR INTEGRATED CIRCUIT
MIN
1.470
1.470
V
OUT
V
IN
I
D
I
OUT
e
N
SVR
V
D
TYP
1.5
1.5
0.1
2
0.5
0.3
5
MAX
1.530
1.530
0.6
3
15
10
1000
100
60
75
0.60
0.82
0.01
MIN
1.764
1.764
TYP
1.8
1.8
0.1
2
0.5
0.3
5
1000
100
60
75
0.32
0.65
0.01
0.48
0.88
0.10
0.73
0.95
0.10
MAX
1.836
1.836
0.6
3
UNIT
V
V
%
%
%
%
V
mA
mA
μV
dB
V
%/W
UNIT
V
V
%
%
%
%
V
mA
mA
μV
dB
V
%/W
V
OUT
V
IN
I
D
I
OUT
e
N
SVR
V
D
15
10
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
4 of 8
QW-R102-029.J
LR1118
ELECTRICAL CHARACTERISTICS (Cont.)
SYMBOL
V
OUT
TEST CONDITIONS
V
IN
=V
OUT
+1.5V, I
OUT
=10mA
V
IN
=(V
OUT
+2V)~15V, I
OUT
=0 to 1A
V
IN
=(V
OUT
+2V)~15V, I
OUT
=0A
V
IN
=V
OUT
+2V, I
OUT
=0 to 1A
1000 hrs, T
J
=125°C
I
OUT
=100mA
V
IN
10V
V
IN
=V
OUT
+4.5V, T
J
=25°C
B=10Hz~10KHz, T
J
=25°C
I
OUT
=40mA, f=120Hz, T
J
=25°C
V
IN
=V
OUT
+2.5V, V
RIPPLE
=1V
PP
I
OUT
= 100mA
I
OUT
= 1A
30ms Pulse
TEST CONDITIONS
V
IN
=V
OUT
+1.5V, I
OUT
=10mA
V
IN
=(V
OUT
+2V)~15V, I
OUT
=0 to 1A
V
IN
=(V
OUT
+2V)~15V, I
OUT
=0A
V
IN
=V
OUT
+2V, I
OUT
=0 to 1A
1000 hrs, T
J
=125°C
I
OUT
=100mA
V
IN
10V
V
IN
=V
OUT
+4.5V, T
J
=25°C
B=10Hz~10KHz, T
J
=25°C
I
OUT
=40mA, f=120Hz, T
J
=25°C
V
IN
=V
OUT
+2.5V, V
RIPPLE
=1V
PP
I
OUT
= 100mA
I
OUT
= 1A
30ms Pulse
For LR1118-2.5V
PARAMETER
Output Voltage
Line Regulation
Load Regulation
Temperature Stability
Long Term Stability
Operating Input Voltage
Quiescent Current
Output Current
Output Noise Voltage
Supply Voltage Rejection
Dropout Voltage
Thermal Regulation
For LR1118-2.85V
PARAMETER
Output Voltage
Line Regulation
Load Regulation
Temperature Stability
Long Term Stability
Operating Input Voltage
Quiescent Current
Output Current
Output Noise Voltage
Supply Voltage Rejection
Dropout Voltage
Thermal Regulation
SYMBOL
V
OUT
LINEAR INTEGRATED CIRCUIT
MIN
2.450
2.450
V
OUT
V
IN
I
D
I
OUT
e
N
SVR
V
D
TYP
2.5
2.5
0.1
2
0.5
0.3
5
MAX
2.550
2.550
0.6
3
15
10
1000
100
60
75
0.16
0.56
0.01
MIN
2.793
2.793
TYP
2.85
2.85
0.1
2
0.5
0.3
5
1000
100
60
75
0.132
0.828
0.01
0.35
0.91
0.10
0.25
0.70
0.10
MAX
2.907
2.907
0.6
3
UNIT
V
V
%
%
%
%
V
mA
mA
μV
dB
V
%/W
UNIT
V
V
%
%
%
%
V
mA
mA
μV
dB
V
%/W
V
OUT
V
IN
I
D
I
OUT
e
N
SVR
V
D
15
10
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
5 of 8
QW-R102-029.J
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
