Datasheet
LT1431
4
1431fe
Typical perForMance characTerisTics
V
REF
and I
REF
vs Temperature
I
LIMIT
vs Temperature with
External Resistor
COLLECTOR V
SAT
vs
Temperature vs Current
Propagation Delay vs Overdrive
Voltage Gain and Phase
vs Frequency
Transconductance and Phase
vs Frequency (REF to COLL)
2.5V Reference I
K
vs V
KA
V
REF
and I
REF
vs V
+
V
REF
and I
REF
vs V
+
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
3.22.6 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
OVERDRIVE (mV)
0
PROPAGATION DELAY (µs)
90
120
150
200
LT1431 TPC07
60
30
0
50
100
150
250
75
105
135
45
15
3 1
1k
OUTPUT
5 6
5V
LT1431
V
REF
± OVERDRIVE
OUTPUT HIGH-TO-LOW
OUTPUT LOW-TO-HIGH
FREQUENCY (Hz)
20
REF-TO-COLL 1k LOAD A
V
(dB)
40
80
120
140
100 10k 100k 10M
LT1431 TPC08
0
1k
1M
100
60
–20
–90
–45
45
135
180
–135
90
0
–180
PHASE (DEG)
PHASE
A
V
FREQUENCY (Hz)
10
10
100 10k 100k 10M
LT1431 TPC09
1k 1M
–90
–45
45
135
180
–135
90
0
–180
PHASE (DEG)
10
9
10
8
10
7
10
6
10
5
10
4
10
3
10
2
REF-TO-COLL g
m
(µ )
Ω
PHASE
g
m