Thru-Hole Power Inductor
ELECTRONICS INC.
EPI AC3 Series
• Optimized for National’s LM267X & LM259X Series
• Low loss material ensures operation in high frequency switching
converters, such as Buck, Boost or as output averaging filter inductor
• Also suitable for use in high quality filter applications
• 150 KHz & 500 KHz Switching Frequency
• Low Cost Inductor
Primary Specification
Part
Number
EPI220502AC3
EPI330402AC3
EPI330352AC3
EPI470352AC3
EPI680302AC3
EPI680352AC3
EPI101252AC3
EPI151202AC3
EPI221152AC3
National
Semiconductor
Chip
Induct.
(µH ± 20%)
@ 0 Adc
DCR
(Ω Typ.)
Induct.
(µH 15%)
@ Idc
Idc
(mA)
Core Loss
@ Vt1
@ Vt2
(mW)
(mW)
Vt1
(V-µSec)
150 KHz
Vt2
(V-µSec)
260 KHz
23.1
23.1
27.0
---
---
28.5
---
30.8
---
12.7
---
---
--
Temp.Rise
@ Vt1
@ Vt2
°C (Typ.) °C (Typ.)
---
35
---
35
---
34
31
---
42
---
---
42
37
---
---
37
43
---
---
44
33
---
43
---
39
---
0.025
290
22
---
5000
27
---
LM267X-L41
0.025
290
22
---
5000
27
---
LM267X-L50
0.038
260
---
33
4000
40
---
LM267X-L40
0.046
33
---
33.4
3500
38
210
LM259X-L40
0.074
---
40.0
47
3500
60
185
LM259X-L39
0.074
185
---
47
3500
60
---
LM267X-L39
0.090
---
46.7
68
3000
87
155
LM259X-L38
0.090
68
155
---
3000
87
---
LM267X-L38
0.091
68
---
26.7
3500
91
45
LM267X-L44
0.091
60
---
68
3500
91
---
LM259X-L44
0.110
---
55.4
100
2500
128
155
LM259X-L37
0.260
---
56.7
150
2000
194
113
LM259X-L36
0.394
220
--
73.4
1500
265
134
LM259X-L35
For no header version : add “V” for Vertical Mount and add “H” for Horizonal Mount
Applications
Unregulated
DC Input
Feedback
+Vin
Regulated
Output
Load
+
Cout
On/Off
Gnd
CB
Vin
8V-40V
+
Cin
FB
LM259X
Vsw
Output
D1
1N5822
LX
µH
LM267X
Vsw
10nF
LX
µH
+
Vout
Cout
Cin
+
D1
Gnd
On/Off
Package AC3V
Pad Layout
.470 Max.
(11.94)
.840
Max.
(21.33)
.280
(7.11)
.060 Ø
(1.52)
.840
Max.
(21.33)
Package AC3
Pad Layout
.060 Ø
(1.52)
.300
(7.62)
Package AC3H
.840
Max.
(21.33)
.470
Max.
(11.94)
.375 ± .125
(9.53 ± 3.18)
.720
(18.29)
Pad Layout
.840
Max.
(21.33)
.720
(18.29)
.950
Max.
(24.13)
.375 ± .125
(9.53 ± 3.18)
.280
(7.11)
.415
(10.54)
.110/.150
(2.79/3.81)
.300
(7.62)
.060 Ø
(1.52)
Unless Otherwise Specified Dimensions are in Inches /mm ± .010 /.25
PCA ELECTRONICS, INC.
16799 SCHOENBORN ST.
NORTH HILLS, CA 91343
Product performance is limited to specified parameters. Data is subject to change without prior notice.
CSIXXXXXXAC3
Rev. 5
2/22/05 FT
TEL: (818) 892-0761
FAX: (818) 894-5791
http://www.pca.com
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