12
?2004 Semtech Corp.
www.semtech.com
SC338(A)
PRELIMINARY
POWER MANAGEMENT
Drive Pin Output Current (Sourcing) vs.
Junction Temperature vs. Input Voltage
Drive Pin Output Current (Sinking) vs.
Junction Temperature vs. Input Voltage
Typical Characteristics (Cont.)
Drive Pin Output Voltage (Full On) vs.
Junction Temperature vs. Input Voltage
Under Voltage Trip Threshold
vs. Junction Temperature
Power Good Threshold vs.
Junction Temperature
Power Good Logic Low Output Voltage
vs. Junction Temperature
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
-50
-25
0
25
50
75
100
125
T
J
(癈)
V
EN
= 5V
V
ADJ
< V
BG
V
IN
= 12V
V
IN
= 5V
0
200
400
600
800
1000
1200
-50
-25
0
25
50
75
100
125
T
J
(癈)
V
EN
= 5V
V
ADJ
> V
BG
V
IN
= 5V
V
IN
= 12V
0
1
2
3
4
5
6
7
8
-50
-25
0
25
50
75
100
125
T
J
(癈)
V
EN
= 5V
I
DRV
= 0mA
V
ADJ
< V
BG
V
IN
= 12V
V
IN
= 5V
-60
-58
-56
-54
-52
-50
-48
-46
-44
-42
-40
-50
-25
0
25
50
75
100
125
T
J
(癈)
V
IN
= V
EN
= 5V
-15.0
-12.5
-10.0
-7.5
-5.0
-2.5
0.0
-50
-25
0
25
50
75
100
125
T
J
(癈)
V
IN
= V
EN
= 5V
Startup only
Normal operation
0
25
50
75
100
125
150
175
200
-50
-25
0
25
50
75
100
125
T
J
(癈)
V
IN
= V
EN
= 5V
V
ADJ
= 0.4V
I
PGD
= -1mA
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