![](/html/Anachip/283736/page5.png)
300Khz, 2.5A PWM Buck DC/DC Converter
AP1503
Marking Information
Logo
Output Type
33 : 3.3V
( Top View )
7
5
AC
AP1503 XX
YY WW X X
1
4
Package Information
Package Type: SOP-7L
C2
C3
Blank: normal
L: Lead Free Package
ID code: internal
Xth week: 01~52
Year: "01" = 2001
"02" = 2002
A
B1 B2
C1
C
β
Ee
D
F
Symbol
A
B1
B2
C
C1
C2
C3
D
E
e
F
β
Dimensions In Millimeters
Min.
Nom.
Max.
5.79
5.99
6.19
3.83
3.91
3.99
3.78
3.86
3.94
4.80
4.87
4.94
1.57
1.67
1.77
0.32
0.4
0.48
1.17
1.27
1.37
0.19
0.22
0.25
1.04REF
0.48
0.68
0.88
1.35
1.45
1.55
7o
Anachip Corp.
www.anachip.com.tw
5/5
Dimensions In Inches
Min.
Nom.
Max.
0.228
0.236
0.244
0.151
0.154
0.157
0.149
0.152
0.155
0.189
0.192
0.194
0.062
0.066
0.070
0.013
0.016
0.019
0.046
0.050
0.054
0.007
0.009
0.010
0.041REF
0.019
0.027
0.035
0.053
0.057
0.061
7o
Rev.A3 Mar. 11, 2004