LT1431 Ver la hoja de datos (PDF) - Linear Technology
Número de pieza
componentes Descripción
Fabricante
LT1431 Datasheet PDF : 14 Pages
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LT1431
Typical Performance Characteristics
2.5V Reference IK vs VKA
VREF and IREF vs V +
1000
2.505
3.5
900
2.504
3.0
800
2.503
2.5
700
IMIN
600
500
2.502
2.501
2.500
2.0
1.5
VREF
1.0
400
2.499
0.5
IREF
300
2.498
0
200
2.497
–0.5
100
2.496
–1.0
0
2.495
–1.5
0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
2.5 2.6 2.7 2.8 2.9 3.0 3.1 3.2 3.3 3.4 3.5
VKA (V)
LT1431 TPC01
V+ (V)
LT1431 TPC02
VREF and IREF vs V +
2.505
3.5
2.504
3.0
2.503
2.5
2.502
2.0
2.501
1.5
2.500
2.499
VREF
1.0
0.5
2.498
0
IREF
2.497
–0.5
2.496
–1.0
2.495
–1.5
0 4 8 12 16 20 24 28 32 36 40
V+ (V)
LT1431 TPC03
VREF and IREF vs Temperature
2.5025
1.00
VREF
2.5000
0.66
2.4975
0.33
IREF
2.4950
0
2.4925
–0.33
2.4900
–0.66
2.4875
–50 –25
0 25 50 75
TEMPERATURE (°C)
–1.00
100 125
LT1431 TPC04
ILIMIT vs Temperature with
External Resistor
1.250
1.125
ILIMIT
=
0.7
RLIM +
3.6
AT
25°C
1.000
COLLECTOR VSAT vs
Temperature vs Current
1.20
1.00
ICOLL = 100mA
0.80
0.875
0.750
0.625
0.500
–50 –25
0.60
0.40
0.20
0 25 50 75
TEMPERATURE (°C)
100 125
LT1431 TPC05
0
–50 –25
ICOLL = 50mA
ICOLL = 20mA
ICOLL = 10mA
0 25 50 75
TEMPERATURE (°C)
100 125
LT1431 TPC06
Voltage Gain and Phase
Propagation Delay vs Overdrive
vs Frequency
150
140
180
135
5V 1k
3
1 OUTPUT
120
PHASE
135
120
VREF ± OVERDRIVE LT1431
105
5
6
100
AV
90
90
80
45
75
60
0
60
40
45
OUTPUT HIGH-TO-LOW
20
30
15
OUTPUT LOW-TO-HIGH
0
–45
–90
–135
0
–20
–180
0
50
100 150 200 250
100
1k
10k 100k 1M 10M
OVERDRIVE (mV)
LT1431 TPC07
FREQUENCY (Hz)
LT1431 TPC08
Transconductance and Phase
vs Frequency (REF to COLL)
1010
180
109
135
108
PHASE
90
107
gm
45
106
0
105
–45
104
–90
103
–135
102
100
–180
1k
10k 100k 1M 10M
FREQUENCY (Hz)
LT1431 TPC09
1431fd
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