LRC
LESHAN RADIO COMPANY,LTD.
LR431 LINEAR INTEGRATED CIRCUIT
3
LRC LR
1
2
SOT-23
SOT-23 1: Ref;
2: Cathode; 3: Anode
Ω
.
°
Pb-Free package is available
CATHODE(K)
REFERENCE(R)
ANODE(A)
Rev.O 1/5
LRC
LESHAN RADIO COMPANY,LTD.
LR431
LINEAR INTEGRATED CIRCUIT
A
C
C
R
LUTE
A I U
RATING
L
A
ARA ETER
C
I
A
T
R
C
T
T
T
C
R
I
A
I
T
T
T
ALUE
3
1
1
+7 0
/ -
4
1
1
1
1
UNIT
A
A
°C
°C
°C
REC
C
C
ENDED
ARA ETER
ERATING C NDITI N
L
A
IN
RE
T
A
3
1
UNIT
A
C
I
A
1
°C
ELECTRICAL C ARACTERI TIC
ARA ETER
R
D
R
C
C
R
D
I
R
T
C
R
D
C
I
C
I
A
A
T
L
A
TE T C NDITI N
RE
IN
T
0
2.495
A
UNIT
I
I
1
R
*
∆
I
C
C
I
R
C
C
∆
I
∆I
I
A
I
A
1
A
A
A
A
∆T
T
∆
A
A
IN
I
A
I
A
1
T
A
T
A
∆
∆
1 A
RE
4
1
3
RE
1
1
1
∞
∞
1
4
4
4
1
1
1
µA
µA
A
µA
Ω
∆T
I
A
1 A R1 1
I
A
1 A R1 1
T
T
A
A
RE
Ω
R
Ω
R
A
A
3
RE
RE
I
A
1
1
A
1
≤1
*
CLASSIFICATION OF V
ref
AND PACKAGE
Ty
pe
RanK
0.5%
1%
0.5%
1%
0.5%
1%
0.5%
1%
Range(V)
2.487~2.512
2.475~2.525
2.482~2.507
2.470~2.520
2.487~2.512
2.475~2.525
2.482~2.507
2.470~2.520
Marking
RA
RB
RA1
RB
1
RA2
RB2
RA3
RB3
Packa
SOT-23
SOT-23
SOT-23
SOT-23
SOT-23
SOT-23
SOT-23
SOT-23
T
0~+70
°C
0~+70
°C
0~+70
°C
0~+70
°C
-40~+125
°C
-40~+125
°C
-40~+125
°C
-40~+125
°C
LR431ALT1G
LR431BLT1G
LR431APLT1G
LR431BPLT1G
LR431ATLT1G
LR431BTLT1G
LR431APTLT1G
LR431BPTLT1G
Rev.O
2/5
LRC
T
ICAL ER
R ANCE C ARACTERI TIC
LESHAN RADIO COMPANY,LTD.
LR431
LINEAR INTEGRATED CIRCUIT
Fig 1 Cathode Current Vs Cathode Voltage
1
C
C
C
A
1
A
RE
µ
A
T
C
T
A
C
RE
4
C
C
1
1
1
3
1
1
3
C
C
C
I
A
C
3C
C
R
I
4
T
C
R
IN
I
1
1
A
1
C
A
T
R
4
3
I
C
3
3
4
1
1
3
3
4
1
3
4
I
1
C
T
D
1
I
A
T
I
A
C
A
1
A
4
3
T
I
A
1
C
A
(
Ω
)
1
1
I
1
1
1
1
A
1
3
4
1
1
1
1
1
1
3
1
4
1
1
1
Rev.O
3/5
LRC
TE T CIRCUIT
IN UT
I
A
A
LESHAN RADIO COMPANY,LTD.
LR431
LINEAR INTEGRATED CIRCUIT
IN UT
I
R1
LR431
A
A
IN UT
I
A
A
I
RE
LR431
LR431
RE
R
RE
A
RE
1 R1 R
I
RE
R1
7
T
C
A
RE
8
T
C
A
RE
9
T
C
I
A
A
LICATI N CIRCUIT
IN
LR
C
N
UT
R1
R1
R1
RE
RE
RE
R
LR431
LR431
R
R
LR431
1 R1 R
RE
1 R1 R
RE
1 R1 R
RE
1
R
11
T
C
R
T
1
R
I
I
RCL
R
R
LR431
LR431
I
RE
R
I
RE
RCL
13 C
14 C
L
C
Rev.O
4/5
LRC
SOT-23 PACKAGE OUTLINE DIMENSIONS
LESHAN RADIO COMPANY,LTD.
D
b
0.2
E1
E
L1
e
e1
C
A1
A2
Dimensions In Millimeters
Symbol
A
A1
A2
b
c
D
E
E1
e
e1
L
L1
0.300
0°
1.800
0.550REF
0.500
8°
0.012
0°
Min
0.900
0.000
0.900
0.300
0.080
2.800
1.200
2.250
0.950TPY
2.000
0.071
0.022REF
0.020
8°
Max
1.100
0.100
1.000
0.500
0.150
3.100
1.610
2.550
Min
0.035
0.000
0.035
0.012
0.003
0.110
0.047
0.089
0.037TPY
0.079
A
L
Dimensions In Inches
Max
0.043
0.004
0.039
0.020
0.006
0.118
0.055
0.100
Rev.O
5/5
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