TPS23750
TPS23770
www.ti.com
SLVS590A–JULY 2005–REVISED AUGUST 2005
TYPICAL CHARACTERISTICS
VBIAS
vs
LOAD CURRENT
VBIAS CURRENT LIMIT
vs
JUNCTION TEMPERATURE
AUX VOLTAGE
vs
LOAD CURRENT
19
10.6
10.4
10.2
10
5.3
18
o
= 125 C
5.25
T
J
o
= 125 C
T
J
17
o
= 25 C
T
5.2
J
16
15
14
13
12
11
10
o
= 25 C
o
T = -40 C
J
T
J
5.15
5.1
9.8
5.05
o
= -40 C
T
J
9.6
5
9.4
4.95
-40
-20
0
20 40
60 80 100 120 140
0
1
2
3
4
5
6
7
8
9
10
0
1
2
3
4
5
o
- Junction Temperature - C
T
J
I
L
- Load Current - mA
I
- Load Current - mA
L
Figure 3.
Figure 4.
Figure 5.
AUX CURRENT LIMIT
vs
JUNCTION TEMPERATURE
ERROR AMPLIFIER SOURCE
ERROR AMPLIFIER SINK CURRENT
CURRENT
vs
vs
VCOMP
VCOMP
20
29
8
o
= 25 C
o
= 25 C
T
T
J
J
o
= 125 C
T
J
7
27
15
o
= 125 C
T
J
6
25
10
5
23
o
= -40 C
4
3
2
5
T
J
21
o
= -40 C
T
J
0
19
-5
17
1
15
0
-10
0
1
2
3
4
5
-40 -20
0
20 40
60 80 100 120 140
0
1
2
3
4
5
o
- Junction Temperature - C
V
- V
V
- V
COMP
T
J
COMP
Figure 6.
Figure 7.
Figure 8.
ERROR AMPLIFIER GAIN AND
FB REGULATION VOLTAGE
vs
JUNCTION TEMPERATURE
TMR SOURCE CURRENT
vs
JUNCTION TEMPERATURE
PHASE
vs
FREQUENCY
100
60
58
56
1.505
Phase
o
= -40 C
T
J
1.504
80
o
= -40 C
T
J
1.503
54
o
= 25 C
T
60
40
20
J
1.502
52
o
= 125 C
Gain
T
J
50
1.501
48
o
= 25 C
T
1.5
J
46
1.499
o
= 125 C
T
J
44
0
1.498
42
-20
40
1.497
1
10
100
1000
10000
-40 -20
0
20 40
60 80 100 120 140
-40 -20
0
20 40
60 80 100 120 140
o
- Junction Temperature - C
o
- Junction Temperature - C
f- Frequency - kHz
T
J
T
J
Figure 9.
Figure 10.
Figure 11.
12
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