Datasheet

3
LT1431
1413fc
2.5V Reference I
K
vs V
KA
V
REF
and I
REF
vs V
+
V
REF
and I
REF
vs V
+
TYPICAL PERFOR A CE CHARACTERISTICS
UW
I
LIMIT
vs Temperature with
External Resistor
COLLECTOR V
SAT
vs
Temperature vs Current
V
REF
and I
REF
vs Temperature
ELECTRICAL CHARACTERISTICS
Note 3: The LT1431 has bias current cancellation which is effective only
for V
KA
≥ 3V. A slight (≈2mV) shift in reference voltage occurs when
V
KA
drops below 3V. For this reason, these tests are not performed at
V
KA
= V
REF
.
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: V
KA
is the cathode voltage of the LT1431CZ/IZ and corresponds to
V
+
of the LT1431CN8/IN8/CS8/IS8. I
K
is the cathode current of the
LT1431CZ/IZ and corresponds to I(V
+
) + I
COLLECTOR
of the LT1431CN8/
IN8/CS8/IS8.
V
KA
(V)
0
I
K
(µA)
600
800
1000
4.0
LT1431 • TPC01
400
200
0
1.0
2.0
3.0
5.0
I
MIN
500
700
900
300
100
0.5 4.5
1.5
2.5
3.5
V
+
(V)
2.5
V
REF
(V)
2.501
2.503
2.505
3.3
LT1431 • TPC02
2.499
2.497
2.495
2.7
2.9
3.1
3.5
I
REF
(µA)
1.5
2.5
3.5
0.5
–0.5
–1.5
V
REF
I
REF
2.500
2.502
2.504
2.498
2.496
3.2
2.6
2.8
3.0
3.4
1.0
2.0
3.0
0
–1.0
V
+
(V)
0
V
REF
(V)
2.501
2.503
2.505
32
LT1431 • TPC03
2.499
2.497
2.495
8
16
24
40
I
REF
(µA)
1.5
2.5
3.5
0.5
–0.5
–1.5
V
REF
I
REF
2.500
2.502
2.504
2.498
2.496
28
4
12
20
36
1.0
2.0
3.0
0
–1.0
TEMPERATURE (°C)
–50
V
REF
(V)
2.4975
2.5000
2.5025
25 75
LT1431 • TPC04
2.4950
2.4925
–25 0
50 100 125
2.4900
2.4875
0.33
0.66
1.00
0
–0.33
–0.66
–1.00
I
REF
(µA)
V
REF
I
REF
TEMPERATURE (°C)
–50
I
LIMIT
(NORMALIZED)
1.000
1.125
1.250
25 75
LT1431 • TPC05
0.875
0.750
–25 0
50 100 125
0.625
0.500
I
LIMIT
=
0.7
R
LIM
+ 3.6
AT 25°C
TEMPERATURE (°C)
–50
V
SAT
(V)
0.80
1.00
1.20
25 75
LT1431 • TPC06
0.60
0.40
–25 0
50 100 125
0.20
0
I
COLL
= 100mA
I
COLL
= 20mA
I
COLL
= 10mA
I
COLL
= 50mA