Datasheet

4
LT1575/LT1577
TYPICAL PERFORMANCE CHARACTERISTICS
U
W
Quiescent Current vs Temperature
FB Input Bias Current
vs Temperature
Adjustable LT1575 V
REF
vs Temperature
TEMPERATURE (°C)
–75
5
QUIESCENT CURRENT (mA)
7
9
11
19
15
–25
25
50 150
17
13
6
8
10
18
14
16
12
–50 0
75
100
125
175
1575/77 G01
V
IN
= 8V
V
IN
= 12V
V
IN
= 20V
TEMPERATURE (°C)
–75
REFERENCE VOLTAGE (V)
1.210
1.214
1.218
1.222
125
1575/77 G02
1.206
1.202
1.208
1.212
1.216
1.220
1.204
1.200
1.198
–25
25
75
–50 150
0
50
100
175
TEMPERATURE (°C)
–75
FB INPUT BIAS CURRENT (µA)
3.0
4.0
125
1575/77 G03
2.0
1.0
2.5
3.5
1.5
0.5
0
–25
25
75
–50 150
0
50
100
175
V
IN
= 20V
V
IN
= 12V
V
IN
= 8V
LT1575-3.5 V
OUT
vs Temperature
LT1575-1.5 V
OUT
vs Temperature
LT1575-2.8 V
OUT
vs Temperature LT1575-3.3 V
OUT
vs Temperature
TEMPERATURE (°C)
–75
OUTPUT VOLTAGE (V)
3.303
3.315
3.327
3.333
125
1575/77 G06
3.291
3.279
3.297
3.309
3.321
3.285
3.273
3.267
–25
25
75
–50 150
0
50
100
175
TEMPERATURE (°C)
–75
OUT DIVIDER CURRENT (mA)
1.1
1.3
1.5
125
1575/77 G09
0.9
0.7
1.0
1.2
1.4
0.8
0.6
0.5
–25
25
75
–50 150
0
50
100
175
OUT Divider Current
vs Temperature
TEMPERATURE (°C)
–75
REFERENCE VOLTAGE (V)
1.503
1.509
1.515
125
1575/77 G04
1.500
1.497
1.494
1.491
1.488
1.485
1.506
1.512
–25
25
75
–50 150
0
50
100
175
TEMPERATURE (°C)
–75
OUTPUT VOLTAGE (V)
2.828
–25
25
50 150
2.824
2.800
2.816
2.812
2.808
2.804
2.800
2.796
2.792
2.788
2.784
2.780
2.776
2.772
–50 0
75
100
125
175
1575/77 G05
TEMPERATURE (°C)
–75
OUTPUT VOLTAGE (V)
3.535
–25
25
50 150
3.530
3.525
3.520
3.515
3.510
3.505
3.500
3.495
3.490
3.485
3.480
3.475
3.470
3.465
–50 0
75
100
125
175
1575/77 G07
LT1575-5 V
OUT
vs Temperature
TEMPERATURE (°C)
–75
OUTPUT VOLTAGE (V)
5.010
5.030
5.050
125
1575/77 G08
4.990
4.970
5.000
5.020
5.040
4.980
4.960
4.950
–25
25
75
–50 150
0
50
100
175