UNISONIC TECHNOLOGIES CO., LTD
LR1118
LOW DROP POSITIVE
VOLTAGE REGULATORS
DESCRIPTION
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.
LINEAR INTEGRATED CIRCUIT
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
* Available in
±1%(at
25°C) and 2% in all temperature range
*Pb-free plating product number: LR1118L
ORDERING INFORMATION
Ordering Number
Normal
Lead Free Plating
LR1118-xx-AA3-①-②
LR1118L-xx-AA3-①-②
LR1118-xx-TA3-①-②
LR1118L-xx-TA3-①-②
LR1118-xx-TN3-①-②
LR1118L-xx-TN3-①-②
LR1118-xx-TQ2-①-②
LR1118L-xx-TQ2-①-②
LR1118-xx-TQ3-①-②
LR1118L-xx-TQ3-①-②
LR1118-xx-S08-①-②
LR1118L-xx-S08-①-②
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
R: Tape Reel
T: Tube
Note: 1. Pin assignment: I:Vin O:Vout G:GND x:NC
2. xx: Output Voltage, refer to Marking Information.
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1 of 9
QW-R102-029,E
LR1118
MARKING INFORMATION
PACKAGE
VOLTAGE CODE
LINEAR INTEGRATED CIRCUIT
MARKING
SOT-223
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
THERMAL DATA
PARAMETER
SOT-223
SOP-8
TO-252
TO-220
TO-263
SYMBOL
RATINGS
15
20
8
4
4
UNIT
Thermal Resistance Junction-Case
θ
JC
°C/W
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QW-R102-029,E
LR1118
BLOCK DIAGRAM
LINEAR INTEGRATED CIRCUIT
V
CC
V
CC
Reference
Voltage
+
-
Current
Limit
Therml
Shut Down
V
CC
Vo
UT
GND
APPLICATION CIRCUIT
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QW-R102-029,E
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
2. The device is guaranteed to meet performance specifications within 0°C~+70°C operation temperature
range, and is assured by design from 0°C~+125°C.
ELECTRICAL CHARACTERISTICS
(Ta=25°C, refer to the test circuits, T
J
=-0~125°C, 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,
T
J
=25°C
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
=1Vpp
I
OUT
= 100mA
I
OUT
= 1A
Ta=25°C, 30ms Pulse
MIN
1.188
1.176
1.176
TYP
1.2
1.2
0.1
2
0.5
0.3
5
800
100
60
75
0.88
1.10
0.01
0.98
1.20
0.10
MAX
1.212
1.224
1.224
0.6
3
UNIT
V
V
%
%
%
%
V
mA
mA
µV
dB
V
V
%/W
1%
2%
∆V
OUT
V
IN
I
D
I
OUT
eN
SVR
V
D
15
10
1500
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
SYMBOL
V
OUT
TEST CONDITIONS
V
IN
=V
OUT
+1.5V, I
OUT
=10mA,
T
J
=25°C
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
=1Vpp
I
OUT
= 100mA
I
OUT
= 1A
Ta=25°C, 30ms Pulse
1%
2%
MIN
1.485
1.470
1.470
TYP
1.5
1.5
0.1
2
0.5
0.3
5
∆V
OUT
V
IN
I
D
I
OUT
eN
SVR
V
D
MAX
1.515
1.530
1.530
0.6
3
UNIT
V
V
%
%
%
%
V
mA
mA
µV
dB
800
100
60
75
0.60
0.82
0.01
15
10
1500
0.73
0.95
0.10
V
V
%/W
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QW-R102-029,E
LR1118
ELECTRICAL CHARACTERISTICS (Cont.)
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
LINEAR INTEGRATED CIRCUIT
SYMBOL
V
OUT
TEST CONDITIONS
V
IN
=V
OUT
+1.5V, I
OUT
=10mA,
T
J
=25°C
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
=1Vpp
I
OUT
= 100mA
I
OUT
= 1A
Ta=25°C, 30ms Pulse
1%
2%
MIN
1.782
1.764
1.764
TYP
1.8
1.8
0.1
2
0.5
0.3
5
∆V
OUT
V
IN
I
D
I
OUT
eN
SVR
V
D
MAX
1.818
1.836
1.836
0.6
3
UNIT
V
V
%
%
%
%
V
mA
mA
µV
dB
800
100
60
75
0.32
0.65
0.01
15
10
1500
0.48
0.88
0.10
V
V
%/W
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
SYMBOL
V
OUT
TEST CONDITIONS
V
IN
=V
OUT
+1.5V, I
OUT
=10mA,
T
J
=25°C
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
=1Vpp
I
OUT
= 100mA
I
OUT
= 1A
Ta=25°C, 30ms Pulse
1%
2%
MIN
2.475
2.450
2.450
TYP
2.5
2.5
0.1
2
0.5
0.3
5
∆V
OUT
V
IN
I
D
I
OUT
eN
SVR
V
D
MAX
2.525
2.550
2.550
0.6
3
UNIT
V
V
%
%
%
%
V
mA
mA
µV
dB
800
100
60
75
0.16
0.56
0.01
15
10
1500
0.25
0.70
0.10
V
V
%/W
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QW-R102-029,E
Embedded System
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