Datasheet

LT1431
5
1431fe
Typical perForMance characTerisTics
I
COMP
vs V
COMP
vs V
REF
Noise vs Frequency 0.1Hz to 10Hz Noise
Transconductance and Phase
vs Frequency (Ref to Comp) Dynamic Impedance vs Frequency V
COMP
vs Temperature vs I
COLL
FREQUENCY (Hz)
10
4
100 10k 100k 10M
LT1431 TPC10
1k 1M
–100
–80
–40
0
20
–120
–20
–60
–140
PHASE (DEG)
3 × 10
3
10
3
0.1
REF-TO-COLL g
m
(µ )
Ω
PHASE
g
m
3 × 10
2
FREQUENCY (Hz)
100
0.8
1.0
1.2
1.4
1k 10k 100k
LT1431 TPC11
0.6
0.4
0.2
0
I
K
≤ 100mA
Z
KA
(Ω)
TEMPERATURE (°C)
–50
V
COMP
(V)
2.0
2.5
3.0
25 75
LT1431 TPC12
1.5
1.0
–25 0
50 100 125
0.5
0
I
COLL
= 100mA
I
COLL
= 10mA
V
COMP
(V)
0
I
COMP
(µA)
400
500
600
1.5 2.5
LT1431 TPC13
300
200
0.5 1.0
2.0 3.0 3.5
100
0
V
REF
= 5V
V
REF
= 4V
V
REF
= 3V
V
REF
= 2.53V
FREQUENCY (Hz)
NOISE (nV/√Hz)
1000
1 100 1k 100k
LT1431 G14
10 10k
500
0
TIME (MINUTES)
0 3 5
LT1431 TPC15
1 2
4 6
NOISE VOLTAGE (50µV/DIV)