Thru-Hole Power Inductor
E L E C T R O N I C S I N C .
EPI AC4 Series
• Optimized for National’s LM267X,LM259X & LM257X Series
• Low loss material ensures operation in high frequency switching
converters, such as Buck, Boost or as output averaging filter inductor
• 52 KHz, 150 KHz & 260 KH KHz Switching Frequency
• Also suitable for use in high quality filter applications
• Low Cost Inductor
Primary Specification
Vt1
Vt2
Vt3
Temp.Rise
Part
Induct.
DCR
Induct.
Idc
Core Loss
National
Semiconductor
Chip
(V-µsec) (V-µsec) (V-µsec)
Number
(µH 15ꢀ) (Ω Typ.) (µH 15ꢀ) (mA)
@ Vt
@ Vt1 @ Vt2 @ Vt3
150 KHz 260 KHz
52 KHz
@ 0 Adc
@ Idc
°C (Typ.)
(mW) (mW)
(mW)
EPI330552AC4 LM267X-L49
EPI470552AC4 LM267X-L48
EPI680302AC4 LM257X-L68
EPI101302AC4 LM257X-100
EPI101342AC4 LM257X-L43
EPI151202AC4 LM257X-L150
EPI151272AC4 LM259X-L42
EPI151302AC4 LM257X-H150
EPI471102AC4 LM257X-L470
42
64
.027
.042
.061
.093
.125
.144
.188
.191
.754
33
47
5500
5500
3000
3000
3400
2000
2700
3000
1000
---
445
380
---
---
---
---
36.6
42.4
---
---
---
34 @ Vt2
42 @ Vt2
24 @ Vt3
28 @ Vt3
44 @ Vt1
24 @ Vt3
43 @ Vt1
55 @ Vt3
27 @ Vt3
---
---
78
68
---
300
180
---
---
96.2
96.2
---
121
130
173
196
202
493
100
100
150
150
150
470
---
---
---
---
320
---
---
81.4
---
---
---
125
---
---
96.2
---
320
---
---
90.7
---
---
---
550
213
---
207.7
207.7
---
---
---
---
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
CB
LM257X
LX
µH
FB
Vsw
Vin
+
LM267X
Cin
LX
µH
Vout
Cout
10nF
D1
+
8V-40V
Vsw
Cout
D1
+
Cin
1N5822
+
Gnd
On/Off
On/Off
Gnd
Package AC4V
Package AC4
Package AC4H
Pad Layout
Pad Layout
.950
Max.
.060 Ø
(1.52)
.400
.550 Max.
(13.97)
(24.13)
.450
(10.16)
(11.43)
.950
Max.
.060 Ø
(1.52)
.950
Max.
(24.13)
.375 .125
(24.13)
.610
Max.
(9.53 3.18)
(15.49)
.840
(21.34)
1.350
Max.
Pad Layout
(34.29)
.375 .125
.950
Max.
.840
(9.53 3.18)
(21.34)
(24.13)
.400
(10.16)
.475
.450
(11.43)
.110/.150
(12.07)
(2.79/3.81)
.060 Ø
(1.52)
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.
CSIXXXXXXAC4 Rev. 5 2/22/05 FT
PCA ELECTRONICS, INC.
16799 SCHOENBORN ST.
NORTH HILLS, CA 91343
TEL: (818) 892-0761
FAX: (818) 894-5791
http://www.pca.com