KIA78R25F~KIA78R37F
Fig.3 Ta - PD
10
8
PD
PD :With infinite heat sink
5
0
-20 0
50 80 100
150
AMBIENT TEMPERATURE Ta ( C)
Note) Oblique line portion : Overheat
protection may operate in this
area.
Fig.5-1 T j - Vo (KIA78R25)
150
VIN =4.2V
I O =0.5A
100
50
0
-50
-100
-25
0
25
50
75
100 125
JUNCTION TEMPERATURE Tj ( C)
Fig.4 IO - VO
100
80
60
40
20
0
0
0.5
1.0
1.5
2.0
OUTPUT CURRENT IO (A)
Fig.5-2 T j - Vo (KIA78R30)
150
VIN =4.7V
IO =0.5A
100
50
0
-50
-100
-25
0
25
50
75 100 125
JUNCTION TEMPERATURE Tj ( C)
Fig.5-3 T j - Vo (KIA78R33)
200
150
VIN =5.0V
I O=0.5A
100
50
0
-50
-100
-150
-25 0
25
50
75 100 125
JUNCTION TEMPERATURE T j ( C)
2001. 5. 31
Revision No : 1
Fig.5-4 Tj - Vo (KIA78R35)
200
150
VIN =5.2V
I O=0.5A
100
50
0
-50
-100
-150
-25
0
25
50
75 100 125
JUNCTION TEMPERATURE Tj ( C)
4/5