UNISONIC TECHNOLOGIES CO., LTD
LR1801
CMOS IC
1.0A FAST ULTRA LOW
DROPOUT LINEAR
REGULATOR
DESCRIPTION
The UTC LR1801/LR1801AD operate from a +1.5V ~ +6V
input supply as fast ultra low-dropout linear regulators. Wide output
voltage range options are available. The fast response
characteristic to make UTC LR1801/LR1801AD suitable for low
voltage microprocessor application. The low quiescent current
operation and low dropout quality caused by the CMOS process.
The UTC LR1801/LR1801AD has low dropout voltage. The
ground pin current is typically 60uA.
Output Voltage Precision: Multiple output voltage options are
available and ranging from 1.2V ~ 5.0V at room temperature with a
guaranteed accuracy of ±1.5%, and ±3.0% when varying line and
load.
The output voltage types of UTC LR1801-xx are fixed one in
the IC and UTC LR1801AD are adjustable one.
FEATURES
* Low Dropout Voltage
* The Guaranteed Output Current is 1A DC
* Output Voltage Accuracy ± 1.5%
* Over temperature Protection And Over current Protection
www.unisonic.com.tw
Copyright © 2019 Unisonic Technologies Co., Ltd
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LR1801
CMOS IC
ORDERING INFORMATION
Ordering Number
Lead Free
Halogen Free
1 -R
1 -R
LR1801L-xx-AA3-○
LR1801G-xx-AA3-○
Package
SOT-223
1 -R
LR1801L-xx-AB3-○
1 -R
LR1801G-xx-AB3-○
SOT-89
1 -R
LR1801L-xx-TN3-○
1 -R
LR1801G-xx-TN3-○
TO-252
LR1801G-xx-AB5-R
LR1801L-xx-SH2-R
1 -R
LR1801ADL-AA3-○
LR1801G-xx-AB5-R
LR1801G-xx-SH2-R
1 -R
LR1801ADG-AA3-○
SOT-89-5
HSOP-8
1 -R
LR1801ADL-AB3-○
1 -R
LR1801ADG-AB3-○
SOT-89
1 -R
LR1801ADL-TN3-○
1 -R
LR1801ADG-TN3-○
TO-252
LR1801ADG-AB5-R
LR1801ADG-SH2-R
O: VOUT I: VIN
SOT-89-5
HSOP-8
LR1801ADG-AB5-R
LR1801ADL-SH2-R
Note: Pin Assignment: G: GND
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
SOT-223
Pin Assignment
1
○
Pin Code 1
A
G
B
O
C
G
D
I
2
O
G
I
G
Packing
3
I
I
O
O
refer to Pin Configuration
Pin Code 1
A
G
B
O
C
G
D
I
2
O
G
I
G
3
I
I
O
O
refer to Pin Configuration
Tape Reel
Tape Reel
Tape Reel
Tape Reel
Tape Reel
Tape Reel
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LR1801
CMOS IC
MARKING INFORMATION
PACKAGE
VOLTAGE CODE
MARKING
SOT-223
SOT-89
SOT-89-5
12: 1.2V
15 : 1.5V
18: 1.8V
25: 2.5V
30: 3.0V
33: 3.3V
50: 5.0V
TO-252
HSOP-8
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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QW-R502-A03.Q
LR1801
CMOS IC
MARKING INFORMATION (For LR1801AD)
PACKAGE
MARKING
SOT-223
SOT-89
SOT-89-5
TO-252
HSOP-8
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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LR1801
CMOS IC
PIN CONFIGURATION
PIN DESCRIPTION
HSOP-8
(Adjustable)
4
1
8
PIN NAME
2
5
4
PIN NO.
HSOP-8
(Fixed)
4
1
8
1
2
7
ON/ OFF
SOT-89-5
3
3, 5,6,7
3, 5,6,
2
Note: The NC pin is electrically open.
The NC pin can be connected to VIN or GND.
GND
VOUT
VIN
NC
ADJ
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
PIN DESCRIPTION
GND
Output Voltage
Input Voltage
ON/OFF select pin, Active High
No Connection
Adjustable Pin
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QW-R502-A03.Q
LR1801
CMOS IC
BLOCK DIAGRAM
Fixed Output Voltage
Adjustable Output Voltage
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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LR1801
CMOS IC
ABSOLUTE MAXIMUM RATINGS
PARAMETER
SYMBOL
RATINGS
UNIT
Input Voltage
VIN
7
V
Shutdown Input Voltage
VIN(SHDN)
-0.3 ~ VIN
V
Maximum Operating Current (DC)
1
A
Power Dissipation (Note 3)
PD
Internally Limited
Junction Temperature
TJ
+125
°C
Storage Temperature
TSTG
-65 ~ +150
°C
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
Junction to Ambient
Junction to Case
SYMBOL
SOT-223
SOT-89
SOT-89-5
TO-252
HSOP-8
SOT-223
SOT-89
SOT-89-5
TO-252
HSOP-8
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
θJA
θJC
RATINGS
165
UNIT
°C/W
185
°C/W
115
143
23
°C/W
°C/W
°C/W
85
°C/W
20
45
°C/W
°C/W
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LR1801
CMOS IC
ELECTRICAL CHARACTERISTICS (TJ = 25°C, unless otherwise specified.)
For LR1801xx
PARAMETER
Input Voltage
SYMBOL
VIN
Output Voltage (Note 3)
VOUT(E)
Output Voltage Line
Regulation
Output Voltage Load
Regulation
Dropout Voltage(Note 4)
TEST CONDITIONS
VIN=VOUT(S)+1V
IOUT=100mA
1.0V≤VOUT(S)
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