LN71XX
High Input Voltage & Low Power CMOS Voltage Regulators
General Description
The LN71XX series is a set of three-terminal middle
current low voltage regulator implemented in CMOS
technology. They can deliver 70mA output current and
allow an input voltage as high as 28V. They are available
with several fixed output voltages ranging from 1.8V to
5.0V. CMOS technology ensures low voltage drop and low
quiescent current. Although designed primarily as fixed
voltage regulators, these devices can be used with external
components to obtain variable voltages and currents.
Features
Low power : 2.5μA (typ.)
Highly Accurate: ±2% (max)
Low voltage drop: 100mV @ Iout=1mA
Low temperature coefficient :
High input voltage: 28V
High input breakdown voltage: ≥40V
Internal protector current limiter and short protector
Maximum output current : 70mA
Little packages: TO-92, SOT-89-3L, SO-T23-3L,
SOT-23-5L
±100ppm/
Applications
Battery-powered equipment
Communication equipment
Package
TO-92
SOT-89-3L
SO-T23-3L
SOT-23-5L
Typical Application Circuit
VIN
C1
VIN
GND
C2
VOUT
VOUT
GND
GND
Note:
CIN(C1)
10µF; COUT(C2)
10 µF.
Ordering Information
LN71
Item
Symbol
18-50
Description
Output voltage:Eg:
Package type
T
F
M
P
TO-92
SOT-23-5L
SOT-23-3L
SOT-89-3L
Device orientation
R
L
Embossed Tape: Standard Feed
Embossed Tape: Reverse Feed
=3,
=0 represents 3.0V
Rev.1.1
Jan. 13. 2016
1
www.natlinear.com
LN71XX
Pin Configuration
SOT-89-3L
(TOP VIEW)
TO-92
(FRONT VIEW)
SOT-23-3L
(TOP VIEW)
SOT-23-5L
(TOP VIEW)
Pin Assignment
Pin Number
SOT-89-3L
1
2
3
TO-92
1
2
3
SOT-23-3L
1
3
2
SOT-23-5L
1
2
3
4
5
Pin Name
GND
VIN
VOUT
NC
NC
Function Description
Ground
Power Input
Output
NC
NC
Marking Rule
SOT-89-3L
TO-92
A-
SOT-89-3L
(TOP VIEW)
TO-92
(FRONT VIEW)
Represents the product name
Symbol
=71
LN71
Represents the output voltage
Symbol
Product Name
Output volatge
Eg:
Represents the assembly lot no.
0~9, A~Z repeated (G, I, J, O, Q, W excepted)
=3
=0 represents 3.0V
Product Name
Rev.1.1
Jan. 13. 2016
2
www.natlinear.com
LN71XX
SOT23-3L
SOT23-5L
SOT-23-3L
(TOP VIEW)
SOT-23-5L
(TOP VIEW)
Represents the product name
Symbol
=1
Product Name
LN71
Represents the output voltage
Symbol
Product Name
Output volatge
Eg:
Represents the assembly lot no.
0~9, A~Z repeated (G, I, J, O, Q, W excepted)
=3
=0 represents 3.0V
Function Block Diagram
VIN
VOUT
GND
Rev.1.1
Jan. 13. 2016
3
www.natlinear.com
LN71XX
Absolute Maximum Ratings
Parameter
Input Voltage
nput breakdown voltage
SOT-89-3L
Power Disspation
TO-92
SOT-23-3L
SOT-23-5L
Operating Ambient Temperature
Storage Temperature
Topr
Tstg
Pd
Symbol
Vin
V
INBV
Maximum Rating
-0.3
40
500
300
250
250
-40
-40
+85
+125
mW
28
Unit
V
V
Caution:
The absolute maximum ratings are rated values exceeding which the product could suffer physical damage.
These values must therefore not be exceeded under any conditions.
Electrical Characteristics
T
a
=25
Symbol
Parameters
Output Voltage
Tolerance
Output Current
Load Regulation
Voltage Drop
Current
Consumption
Test Conditions
V
IN
V
OUT+
1V
V
OUT+
1V
V
OUT+
1V
-
V
OUT+
1V
Conditions
I
OUT
=10mA
-
1mA≤I
OUT
≤20mA
I
OUT
=10mA
No Load
Min.
Typ.
[1]
Max.
1.02×
V
OUT
70
100
-
5
Unit
V
OU T
I
OUT
△
V
OUT
V
DIF
I
SS
0.98×V
OUT
20
-
-
-
V
OUT
30
60
V
mA
mV
mV
uA
150
2.5
V
OUT
V
IN
V
OUT
V
IN
V
INBV
Line Regulation
-
V
OUT+
1V≤V
IN
≤24
I
OUT
=1mA
-
0.2
-
%/V
Input Voltage
Input breakdown
voltage
Temperature
Coefficient
-
-
-
-
-
40
-
-
28
-
V
V
ΔV
OUT
ΔT
a
V
OUT+
1V
I
OUT
=10mA
0
≤T
a
≤70
-
±0.45×
V
OUT
3
-
mV/
Note[1]:
“V
OUT
” is the fixed output voltage. eg. “V
OUT
” equal 3.0V for LN7130 and equal 5.0V for LN7150
Rev.1.1
Jan. 13. 2016
4
www.natlinear.com
LN71XX
Typical Performance Characteristics
1.
Quiescent Current VS Input Voltage
Quiescent Current VS Input Voltage
5.0
4.5
20
18
2. Reverse Output Current VS Output Voltage
Reverse Output Current VS Output Voltage
Reverse Output Current (uA)
4.0
16
14
12
10
8
6
4
2
0
Quiescent Current (uA)
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
0
5
10
TJ=25
TJ=25
, IL=0mA,VOUT=3.3V
, IL=0mA,VOUT=5.0V
TJ=25
TJ=25
VIN=0V,VOUT=3.3V
VIN=0V,VOUT=5.0V
15
20
25
30
0
1
2
3
4
5
6
7
8
9
10
Input Voltage (V)
Output Voltage (V)
3. Current Limit VS Vin-Vout
Current Limit VS Vin-Vout
200
180
4. GND Pin Current VS Output Current
GND Pin Current VS Output Current
400
360
320
Output Current Limit (mA)
160
140
120
100
80
60
40
20
0
0.0
GND Pin Current (uA)
TJ=25
TJ=25
VOUT=3.3V
VOUT=5.0V
280
240
200
160
120
80
40
0
TJ=25
TJ=25
VIN=4.3V
VIN=6.0V
VOUT=3.3V
VOUT=5.0V
2.5
5.0
7.5
10.0
12.5
15.0
17.5
20.0
22.5
25.0
0
10
20
30
40
50
60
70
80
90
Input / Output Differential (V)
Output Current (mA)
5. GND Pin Current VS Input Voltage
GND Pin Current VS Input Voltage
100
90
80
6. Dropout Voltage VS Temperature
Dropout Voltage VS Temperature
1000
900
800
GND Pin Current (uA)
70
60
50
40
30
20
10
0
0
5
10
15
20
25
30
Dropout Voltage (mV)
700
600
500
400
300
200
100
IL=1mA VOUT=3.3V
IL=10mA VOUT=3.3V
IL=30mA VOUT=3.3V
IL=1mA VOUT=5.0V
IL=10mA VOUT=5.0V
IL=30mA VOUT=5.0V
IL=1mA,VOUT=3.3V
IL=10mA,VOUT=3.3V
IL=30mA,VOUT=3.3V
IL=1mA,VOUT=5.0V
IL=10mA,VOUT=5.0V
IL=30mA,VOUT=5.0V
0
-40 -30 -20 -10
0
10
20
30
40
50
60
70
80
90
100
Input Voltage (V)
Temperature ( )
Rev.1.1
Jan. 13. 2016
5
www.natlinear.com
嵌入式系统
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
