TL1451A
DUAL PULSE-WIDTH-MODULATION CONTROL CIRCUITS
SLVS024E – FEBRUARY 1983 – REVISED NOVEMBER 1999
TYPICAL CHARACTERISTICS
REFERENCE OUTPUT VOLTAGE VARIATION
REFERENCE OUTPUT VOLTAGE VARIATION
vs
vs
FREE-AIR TEMPERATURE
FREE-AIR TEMPERATURE
30
20
30
20
V
I
= 40 V
V
I
= 3.6 V
= 1 mA
CC
CC
I(ref)
= 1 mA
I(ref)
10
10
0
0
–10
– 20
– 30
–10
– 20
– 30
– 25
0
25
50
75
100
– 25
0
25
50
75
100
T
A
– Free-Air Temperature – °C
T
A
– Free-Air Temperature – °C
Figure 7
Figure 8
DROPOUT VOLTAGE VARIATION
REFERENCE OUTPUT VOLTAGE
vs
vs
FREE-TEMPERATURE
SUPPLY VOLTAGE
1.1
1
3
I
= 1 mA
T
A
= 25°C
I(ref)
2.5
2
0.9
0.8
0.7
0.6
1.5
1
0.5
0
– 25
0
25
50
75
100
0
5
10
15
20
25
30
35
40
T
A
– Free-Air Temperature – °C
V
CC
– Supply Voltage – V
Figure 9
Figure 10
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