Thru-Hole Power Inductor
E L E C T R O N I C S I N C .
EPIXXXXXXAC5 & EPIXXXXXXAC5-LF
• Optimized for National’s LM257X 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
• Add “-LF” after part number for Lead-Free
• 52 KHz Switching Frequency
• Low Cost Inductor
Primary Specification
Part
Number
Induct.
(µH ± 20%)
@ 0 Adc
DCR
(WTyp.)
Induct.
(µH 10%)
@ Idc
Idc
(mA)
Core Loss
@ Vt1
(mW)
Vt1
(V-µSec)
52 KHz
Temp.Rise
@ Vt1
°C (Typ.)
National
Semiconductor
Chip
EPI221302AC5(-LF)
EPI331302AC5(-LF)
EPI471202AC5(-LF)
EPI681132AC5(-LF)
EPI102951AC5(-LF)
LM257X-H220
LM257X-H330
LM257X-H470
LM257X-H680
LM257X-H1000
260
437
.090
.117
.210
.247
.297
220
330
3000
3000
2000
1300
950
510
280
210
150
110
230.8
230.8
230.8
230.8
230.8
23
26
20
12
9
542
470
757
1093
680
1000
For no header version : add “V” for Vertical Mount and add “H” for Horizonal Mount
Applications
Feedback
Output
7V-40V
(60V for HV)
Unregulated
DC Input
+Vin
+5V
Regulated
Output
Load
LM257X
LX
µH
Vsw
+
Cin
+
Cout
D1
1N5822
Gnd
On/Off
Package AC5V
Package AC5
Package AC5H
Pad Layout
Pad Layout
1.300
Max.
(33.02)
.060 Ø
(1.52)
.500
(12.70)
.700 Max.
(19.78)
.500
(12.70)
1.300
Max.
(33.02)
.060 Ø
(1.52)
1.300
(33.02)
.375 ± .125
(9.53 ± 3.18)
.700
(19.78)
1.100
(27.94)
1.400
Max.
(35.56)
Pad Layout
.375 ± .125
(9.53 ± 3.18)
1.300
Max.
(33.02)
1.100
(27.94)
.500
(12.70)
.625
(15.75)
.500
(12.70)
.110/.150
(2.79/3.81)
.060 Ø
(1.52)
Notes :
EPIXXXXXXAC5
SnPb
EPIXXXXXXAC5-LF
Hot Tin Dip (Sn)
260°C
1. Lead Finish
2. Peak Solder Rating
(for wave solder process Only)
225°C
4. Weight
51 grams
51 grams
5. Packaging Information
(Tube)
TBD pcs / tube
TBD pcs / tube
Unless Otherwise Specified Dimensions are in Inches /mm ± .010 /.25
Product performance is limited to specified parameters. Data is subject to change without prior notice.
CSIXXXXXXAC5 Rev. 4 7/27/06 FT
PCA ELECTRONICS, INC.
16799 SCHOENBORN ST.
NORTH HILLS, CA 91343
TEL: (818) 892-0761
FAX: (818) 894-5791
http://www.pca.com