lm257x-l68 PCA Electronics Inc., lm257x-l68 Datasheet
lm257x-l68
Manufacturer Part Number
lm257x-l68
Description
Thru-hole Power Inductor
Manufacturer
PCA Electronics Inc.
Datasheet
1.LM257X-L68.pdf
(1 pages)
8V-40V
x
x
x
x x
x x
x
x x x
x
x x x
x x x x
x
x x
EPI330552AC4
EPI470552AC4
EPI680302AC4
EPI101302AC4
EPI101342AC4
EPI151202AC4
EPI151272AC4
EPI151302AC4
EPI471102AC4
PCA ELECTRONICS, INC.
16799 SCHOENBORN ST.
NORTH HILLS, CA 91343
Vin
(24.13)
Cin
Max.
.950
Number
Part
x
x
+
(9.53 ± 3.18)
.375 ± .125
Package AC4V
.550 Max.
On/Off
(13.97)
LM267X
Semiconductor
(10.16)
LM267X-L49
LM267X-L48
LM257X-L68
LM257X-100
LM257X-L43
LM257X-L150
LM259X-L42
LM257X-H150
LM257X-L470
E L E C T R O N I C S I N C .
.400
National
Chip
Vsw
Gnd
Pad Layout
.060 Ø
FB
(1.52)
(10.16)
.400
10nF
CB
Product performance is limited to specified parameters. Data is subject to change without prior notice.
D1
For no header version : add “V” for Vertical Mount and add “H” for Horizonal Mount
(µH ± 15%)
@ 0 Adc
Induct.
121
130
173
196
202
493
42
64
78
Unless Otherwise Specified Dimensions are in Inches /mm ± .010 /.25
µH
LX
(Ω Typ.)
(12.07)
DCR
.027
.042
.061
.093
.125
.144
.188
.191
.754
(34.29)
.475
1.350
Max.
+
x x
x x
x x x x
x x x x
x x
x x
(µH 15%)
Cout
Induct.
@ Idc
Vout
CSIXXXXXXAC4
100
100
150
150
150
470
• Optimized for National’s LM267X,LM259X & LM257X Series
• Low loss material ensures operation in high frequency switching
• 52 KHz, 150 KHz & 260 KH KHz Switching Frequency
• Also suitable for use in high quality filter applications
• Low Cost Inductor
33
47
68
(24.13)
x
x
x x
x x x x
x x x x
x
x
x x
Primary Specification
Max.
.950
converters, such as Buck, Boost or as output averaging filter inductor
Applications
5500
5500
3000
3000
3400
2000
2700
3000
1000
(mA)
Package AC4
(60V for HV)
Unregulated
Idc
(2.79/3.81)
.110/.150
DC Input
7V-40V
Rev. 5
@ Vt1
(mW)
320
320
---
---
---
---
---
---
---
.060 Ø
2/22/05 FT
Cin
(1.52)
Core Loss
(11.43)
@ Vt2
.450
(mW)
+
445
380
EPI AC4 Series
---
---
---
---
---
---
---
+Vin
Pad Layout
(15.49)
(11.43)
Gnd
Max.
.450
.610
LM257X
@ Vt3
(mW)
300
180
125
550
213
---
---
---
---
Vsw
On/Off
(V-µsec)
150 KHz
81.4
90.7
Vt1
---
---
---
---
---
---
---
Feedback
Output
x x x x x
x x x x x
x x x
x x
1N5822
D1
(V-µsec)
260 KHz
x x
x x x
x x
(24.13)
36.6
42.4
Max.
Vt2
.950
---
---
---
---
---
---
---
(9.53 ± 3.18)
.375 ± .125
Package AC4H
µH
LX
(24.13)
(V-µsec)
52 KHz
Max.
.950
TEL: (818) 892-0761
FAX: (818) 894-5791
207.7
207.7
http://www.pca.com
96.2
96.2
96.2
Vt3
---
---
---
---
+
Cout
Temp.Rise
34 @ Vt2
42 @ Vt2
24 @ Vt3
28 @ Vt3
44 @ Vt1
24 @ Vt3
43 @ Vt1
55 @ Vt3
27 @ Vt3
Pad Layout
.060 Ø
°C (Typ.)
(1.52)
Regulated
(21.34)
@ Vt
Output
.840
Load
+5V
(21.34)
.840
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