UNISONIC TECHNOLOGIES CO., LTD
LR1101
100mA, 4µA QUIESCENT
CURRENT CMOS LDO
REGULATOR
DESCRIPTION
The UTC
LR1101
series are ultra-low quiescent current CMOS
LDO (Low Dropout Voltage). Designed for battery-powered system,
the low 4μA quiescent current makes it an ideal choice. The Range
of the output voltage is from 1.5V ~ 5V with 0.1V per step. And the
max output current is 100mA.
Wide range of available output fits most of applications. Built-in
output current-limiting provide maximal protection against any fault
conditions.
CMOS IC
FEATURES
* 450mV typically dropout at 100mA
* Ultra-low quiescent current: 4μA
* Wide operating voltage ranges: 2V ~ 6V
* Thermal current limiting protection
* For stability only 1μF output capacitor is required
* High power supply rejection ratio
ORDERING INFORMATION
Ordering Number
Pin Assignment
Package
Lead Free
Halogen Free
1
2
3
4
LR1101L-xx-AB3-C-R
LR1101G-xx-AB3-C-R
SOT-89
G
I
O
-
LR1101L-xx-AE3-5-R
LR1101G-xx-AE3-5-R
SOT-23
G
O
I
-
LR1101L-xx-AF5-R
LR1101G-xx-AF5-R
SOT-25
I
G EN NC
Note: Pin Assignment: I: V
IN
O: V
OUT
G: GND NC: No Connection EN: Enable
5
-
-
O
Packing
Tape Reel
Tape Reel
Tape Reel
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QW-R102-034.F
LR1101
MARKING INFORMATIONS
PACKAGE
VOLTAGE CODE
PIN CODE
1
2
3
4
5
MARKING
CMOS IC
SOT-89
15:1.5V
18:1.8V
25:2.5V
28:2.8V
30:3.0V
33:3.3V
35:3.5V
36:3.6V
47:4.7V
50:5.0V
C
G
I
O
-
-
5
4
SOT-25
-
I
G
EN
NC
O
Voltage Code
SG XX
1
2
3
G: Halogen Free
L: Lead Free
3
SOT-23
5
G
O
I
-
-
Voltage Code
SG
2
1
L: Lead Free
G: Halogen Free
PIN DESCRIPTION
SOT-89
2
3
1
-
-
PIN NO.
SOT-25
1
5
2
3
4
SOT-23
3
2
1
-
-
PIN NAME
V
IN
V
OUT
GND
EN
NC
DESCRIPTION
Input voltage
Output voltage
Ground
Chip enable input
No connection
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LR1101
BLOCK DIAGRAM
V
IN
CMOS IC
GND
UNISONIC TECHNOLOGIES CO., LTD
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+
Current Limit
_
EN
V
OUT
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QW-R102-034.F
LR1101
ABSOLUTE MAXIMUM RATINGS
PARAMETER
SYMBOL
V
IN
CMOS IC
RATINGS
UNIT
Input Voltage
7
V
SOT-89
500
mW
Power Dissipation (T
A
= 25℃)
SOT-23
P
D
250
mW
SOT-25
250
mW
Junction Temperature
T
J
125
℃
Operating Temperature
T
OPR
-40 ~ +85
℃
Storage Temperature
T
STG
-65 ~ +150
℃
Note: 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
Thermal Resistance
SOT-89
SOT-23
SOT-25
SYMBOL
θ
JA
RATINGS
180
250
250
UNIT
℃/W
℃/W
℃/W
ELECTRICAL CHARACTERISTICS
(V
IN
=5.5V, C
I
=1μF, Co=1μF,T
A
=25℃ unless otherwise specified)
PARAMETER
Input Voltage Range
Output Voltage Accuracy
Line Regulation
Load Regulation
Maximum Output Current
Current Limit
GND Pin Current
Dropout Voltage
Stand By Current
EN
SYMBOL
V
IN
ΔV
OUT
ΔV
LINE
ΔV
LOAD
I
MAX
I
LIMIT
I
G
V
D
I
STN-BY
EN
TEST CONDITIONS
I
L
= 1mA
V
IN
= (V
OUT
+ 0.3V) to 6V, V
IN
≧3.6V,
I
OUT
= 1mA
I
LOUT
= 0mA to 100mA
V
IN
= V
OUT
+ 0.6V, V
IN
≧3.6V
I
L
= 100mA
No Load
I
OUT
= 100mA
I
OUT
= 1mA, V
IN
≧3.6V
I
OUT
= 50mA, V
IN
≧3.6V
I
OUT
= 100mA, V
IN
≧3.6V
= V
IN
V
OUT
= High
V
OUT
= Low
V
OUT
= 0
Exterior Calefaction
EN
MIN.
2
-2
-0.2
TYP.
MAX.
6
+2
0.2
UNIT
V
%
%/V
%/mA
mA
mA
μA
mV
μA
V
mA
℃
0.01
100
150
250
4
4
4
200
450
0.1
0.04
Threshold
0
2
125
Short Current
Thermal Shutdown
I
SC
7
10
10
300
600
1
0.6
V
IN
500
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QW-R102-034.F
LR1101
APPLICATION INFORMATION
CMOS IC
Between V
OUT
and GND a 1μF (or larger) capacitor is recommended for stability. Without the capacitor the part
may oscillate. When operating below -25℃ any type of capacitor can be used, but not Aluminum electrolytes. If
there’s no limit the capacitance may be increased.
Between V
IN
to GND a 1μF capacitor (or larger) should be placed.
APPLICATION CIRCUIT
UTC LR1101
V
IN
V
IN
C
I
1µF
GND
V
OUT
C
O
1µF
V
OUT
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QW-R102-034.F
嵌入式系统
