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 1.2V ~ 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
*Pb-free plating product number:LR1101L
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
Normal
Lead Free Plating
LR1101-xx-AB3-C-R
LR1101L-xx-AB3-C-R
LR1101-xx-AE3-5-R
LR1101L-xx-AE3-5-R
LR1101-xx-AF5-R
LR1101L-xx-AF5-R
Note:
Pin Assignment: I: V
IN
O: V
OUT
G: GND
Package
SOT-89
SOT-23
SOT-25
1
G
G
I
Pin Assignment
2 3
4
I
O
-
O
I
-
G EN NC
5
-
-
O
Packing
Tape Reel
Tape Reel
Tape Reel
NC: No Connection EN: Enable
(1) R:Tape Reel
(2) refer to Pin Assignment
(3)
AB3:SOT-89, AE3:SOT-23, AF5:SOT-25
(4) xx:refer to Marking Information
(5) L:Lead Free Plating, Blank:Pb/Sn
LR1101L-xx-AB3-C-R
(1)Packing Type
(2)Pin Assignment
(3)Package Type
(4)Output Voltage Code
(5)Lead Plating
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Copyright © 2007 Unisonic Technologies Co., Ltd
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QW-R102-034.B
LR1101
ABSOLUTE MAXIMUM RATINGS
PARAMETER
SYMBOL
V
IN
CMOS IC
RATINGS
UNIT
Input Voltage
7
V
SOT-89
500
mW
Power Dissipation (Ta = 25℃)
P
D
SOT-23
250
mW
SOT-25
250
mW
Junction Temperature
T
J
125
℃
Operating Temperature
T
OPR
-40 ~ +125
℃
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
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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QW-R102-034.B
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
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
5 of 8
QW-R102-034.B
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