APW1172
Typical Operating Characteristics (Cont.)
Efficiency vs. Output Current at V
IN
=5V
80%
78%
76%
Efficiency vs. Output Current at V
IN
=12V
86%
84%
82%
80%
74%
78%
Efficiency (%)
72%
76%
74%
72%
70%
68%
66%
Efficiency (%)
70%
68%
66%
64%
62%
60%
0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4 2.6
V
O
=2.5V
V
O
=3.3V
V
O
=5V
V
O
=1.8V
V
O
=2.5V
V
O
=3.3V
64%
62%
60%
0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4 2.6
Output Current (A)
Output Current (A)
V
CE
vs. I
CE
1.5
1.4
1.3
1.2
V
FB
vs.
Temperature
1.241
1.240
1.239
V
IN
=5V
1.238
1.237
V
CE
(V)
1.1
1.0
0.9
V
FB
(V
)
3.0
1.236
1.235
1.234
1.233
V
IN
=12V
0.8
0.7
0.0
0.5
1.0
1.5
2.0
2.5
1.232
1.231
-50
-25
0
25
50
75
100
125
I
CE
(A)
Junction Temperature (
o
C)
Copyright
©
ANPEC Electronics Corp.
Rev. A.4 - Aug., 2005
9
www.anpec.com.tw
ANPEC [ ANPEC ELECTRONICS COROPRATION ]
