Nordtek
 

SW -For 150KHz Simple Switcher

Return to normal view
SW Series low cost toroidal inductors, designed for use with National Semiconductor's 150kHz Simple SwitcherTM Part Numbers LM259X-L1 through LM259X-L44 and LM258X-L   SW - For 150HKz Simple Switcher
   

Features  

  • High energy storage with minimum saturation
  • High stability from no load to full load
  • Available in both SMD and TH versions
  • Manufactured in ISO-9001 approved facility
  • Operating temperature range: -40°C to +125°C
  

Mechanical Layout
Cross Reference, Pulse Engineering - Talema Electronic

Electrical Specifications at 25°C

Part Number National Part
Number		 Rated Current
(IDC)		 LN (µH) ±20% ETOP (V-µSec) Max. DCR
(Ohm)		 Energy Storage
(µJ)		 Package
"S" "C" & "T"
 SW_-0.13-259
 SW_-0.16-178		  LM-259X-L1
 LM-259X-L2 		 0.13
0.16		 259
187		 23.1
16.5		 3.40
2.80		 2
2		  S1 T1
 SW_-0.20-118
 SW_-0.25-79
 SW_-0.30-55		  LM-259X-L3
 LM-259X-L4
 LM-259X-L5		 0.20
0.25
0.30		 118
79
55		 13.2
9.9
6.6		 1.80
1.50
1.00		 2
2
2
 SW_-0.34-39
 SW_-0.45-26		  LM-259X-L6
 LM-259X-L7		 0.34
0.45		 39
26		 6.6
6.6		 0.80
0.62		 2
3
 SW_-0.20-374
 SW_-0.25-256
 SW_-0.30-176		  LM-259X-L8
 LM-259X-L9
 LM-259X-L 10		 0.20
0.25
0.30		 374
256
176		 75.9
33.0
26.4		 2.70
2.20
1.40		 7
8
8		  S2 T2
 SW_-0.38-118
 SW_-0.46-78
 SW_-0.56-55		  LM-259X-L 11
 LM-259X-L 12
 LM-259X-L 13		 0.38
0.46
0.56		 118
78
55		 19.8
16.5
13.2		 1.20
0.80
0.50		 9
8
9
 SW_-0.68-39
 SW_-0.84-26
 SW_-1.02-17		  LM-259X-L 14
 LM-259X-L 15
 LM-259X-L 16		 0.68
0.84
1.02		 39
26
17		 9.9
6.6
6.6		 0.30
0.20
0.10		 9
9
9
 SW_-0.36-375
 SW_-0.44-252
 SW_-0.54-173		  LM-259X-L 17
 LM-259X-L 18
 LM-259X-L 19		 0.36
0.44
0.54		 375
252
173		 75.9
49.5
36.3		 1.30
0.90
0.60		 24
24
25		  S3 T3
 SW_-0.67-115
 SW_-0.82-78
 SW_-1.0-54		  LM-259X-L20
 LM-259X-L21
 LM-259X-L22		 0.67
0.82
1.00		 115
78
54 		 29.7
23.1
16.5		 0.40
0.30
0.20		 26
26
27
 SW_-1.2-38
 SW_-1.48-26
 SW_-1.81-18		  LM-259X-L23
 LM-259X-L24
 LM-259X-L25		 1.20
1.48
1.81		 38
26
18 		 13.2
9.9
9.9		 0.10
0.10
0.06		 27
28
29
 SW_-0.68-377
 SW_-0.83-248
 SW_-1.02-168		  LM-259X-L26
 LM-259X-L27
 LM-259X-L28		 0.68
0.83
1.02		 377
248
168		 75.9
72.6
56.1		 1.00
0.60
0.40		 87
85
87		  S4 T4
 SW_-1.26-112
 SW_-1.54-77
 SW_-1.87-53		  LM-259X-L29
 LM-259X-L30
 LM-259X-L31		 1.26
1.54
1.87		 112
77
53		 42.9
33.0
26.4		 0.30
0.20
0.13		 89
91
93
 SW_-2.24-37  LM-259X-L32 2.24 37 19.8 0.10 93
 SW_-2.74-24  LM-259X-L33 2.74 24 16.5 0.07 90
 SW_-3.00-17  LM-259-L34 3.00 17 13.2 0.05 77  S4 C1 - T4
 SW_-1.5-250
 SW_-1.81-168		  LM-259X-L35
 LM-259X-L36		 1.50
1.81		 250
168		 72.6
75.9		 0.23
0.18		 281
275		  S6 C3
 SW_-2.22-114
 SW_-2.70-77
 SW_-3.00-53		  LM-259X-L37
 LM-259X-L38
 LM-259X-L39		 2.22
2.70
3.00		 114
77
53		 62.7
52.8
42.9		 0.10
0.09
0.08		 281
281
239
 SW_-3.00-38  LM-259X-L40 3.00 38 29.7 0.05 171
 SW_-3.00-25  LM-259X-L41 3.00 25 19.8 0.04 113  S5 T5 - C2
 SW_-2.50-167
 SW_-3.00-110		  LM-259X-L42
 LM-259X-L43		 2.50
3.00		 167
110		 75.9
75.9		 0.14
0.09		 522
495		  S6 C4
 SW_-3.00-77
 SW_-4.50-19		  LM-259X-L44
 LM-258X-L		 3.00
4.50		 77
19		 59.4
32.0*		 0.08
0.02		 347
192		 C3

*Note: ETOP for PIN SW_-4.50-19 is based on a frequency of 100kHz. All other items are rated at 150kHz.
Simple SwitcherTM is a trademark of National Semiconductor Corporation.





Mechanical Layout


Mechanical Layout - Type SWS - Surface Mount   Mechanical Layout - Type SWS - Through Hole Mount

Mounting Style Size Code Dimensions - Inches ±0.010 (mm ±0.25))
A B C D E
"S"
SMD		 S1 0.339
(8.60)		 0.339
(8.60)		 0.185
(4.70)		 0.268
(6.80)		 0.378
(9.60)
S2 0.394
(10.0)		 0.394
(10.0)		 0.256
(6.50)		 0.339
(8.60)		 0.402
(10.2)
S3 0.503
(12.8)		 0.503
(12.8)		 0.276
(7.00)		 0.449
(11.4)		 0.512
(13.0)
S4 0.591
(15.0)		 0.591
(15.0)		 0.315
(8.00)		 0.508
(12.9)		 0.551
(14.0)
S5 0.669
(17.0)		 0.701
(17.8)		 0.390
(9.91)		 0.591
(15.0)		 0.591
(15.0)
S6 0.925
(23.5)		 0.925
(23.5)		 0.496
(12.6)		 0.827
(21.0)		 0.689
(17.5)
"T"
TH		 T1 0.339
(8.60)		 0.339
(8.60)		 0.216
(5.50)		 0.250
(6.35)		 0.250
(6.35)
T2 0.394
(10.0)		 0.394
(10.0)		 0.287
(7.30)		 0.300
(7.62)		 0.300
(7.62)
T3 0.503
(12.8)		 0.503
(12.8)		 0.307
(7.80)		 0.375
(9.52)		 0.375
(9.52)
T4 0.591
(15.0)		 0.591
(15.0)		 0.346
(8.80)		 0.500
(12.70)		 0.299
(7.62)
T5 0.669
(17.0)		 0.701
(17.8)		 0.422
(10.71)		 0.600
(15.24)		 0.400
(10.16)

Type SWC - Clip Mount


Mounting Style Size Code Dimensions - Inches ±0.01 (mm ±0.25)
C D E X = Coil O.D. +
"C"
Vertical
Clip
Mount		 C1 0.580
(14.73)		 0.340
(8.64)		 0.220
(5.58)		 0.110
(2.80)
C2 0.650
(16.5)		 0.449
(11.4)		 0.299
(7.60)		 0.110
(2.80)
C3 0.827
(21.0)		 0.449
(11.4)		 0.299
(7.60)		 0.110
(2.80)
C4 0.949
(24.1)		 0.598
(15.2)		 0.449
(11.4)		 0.110
(2.80)
C5 1.252
(31.8)		 0.701
(17.8)		 0.500
(12.7)		 0.130
(3.30)



SW Series Cross Reference for National's 150kHz Simple SwitcherTM


Pulse Engineering - Talema Electronic
Pulse Part Number National Part Number Specified L(µH) Idc (Amps) Talema Part Number
THT SMD SMD TH-Flat TH-Vertical
 PE-53801
 PE-53802		  PE-53801S
 PE-53802S		  LM259X-L1
 LM259X-L2		 259
178		 0,13
0,16		  SWS-0.13-259
 SWS-0.16-178		  SWT-0.13-259
 SWT-0.16-178		  
 PE-53803
 PE-53804
 PE-53805		  PE-53803S
 PE-53804S
 PE-53805S		  LM259X-L3
 LM259X-L4
 LM259X-L5		 118
79
55		 0,20
0,25
0,30		  SWS-0.20-118
 SWS-0.25-79
 SWS-0.30-55		  SWT-0.20-118
 SWT-0.25-79
 SWT-0.30-55		  
 PE-53806
 PE-53807		  PE-53806S
 PE-53807S		  LM259X-L6
 LM259X-L7		 39
26		 0,34
0,45		  SWS-0.34-39
 SWS-0.45-26		  SWT-0.34-39
 SWT-0.45-26		  
 PE-53808
 PE-53809
 PE-53810		  PE-53808S
 PE-53809S
 PE-53810S		  LM259X-L8
 LM259X-L9
 LM259X-L10		 374
256		 0,20  SWS-0.20-374
 SWS-0.25-256
 SWS-0.30-176		  SWT-0.20-374
 SWT-0.25-256
 SWT-0.30-176		  
 PE-53811
 PE-53812
 PE-53813		  PE-53811S
 PE-53812S
 PE-53813S		  LM259X-L11
 LM259X-L12
 LM259X-L13		 118
78
55		 0,38
0,46
0,56		  SWS-0.38-118
 SWS-0.46-78
 SWS-0.56-55		  SWT-0.38-118
 SWT-0.46-78
 SWT-0.56-55		  
 PE-53814
 PE-53815
 PE-53816		  PE-53814S
 PE-53815S
 PE-53816S		  LM259X-L14
 LM259X-L15
 LM259X-L16		 39
26
17		 0,68
0,84
1,02		  SWS-0.68-39
 SWS-0.84-26
 SWS-1.02-17		  SWT-0.68-39
 SWT-0.84-26
 SWT-1.02-17		  
 PE-53817
 PE-53818
 PE-53819		  PE-53817S
 PE-53818S
 PE-53819S		  LM259X-L17
 LM259X-L18
 LM259X-L19		 375
252
173		 0,36
0,44
0,54		  SWS-0.36-375
 SWS-0.44-252
 SWS-0.54-173		  SWT-0.36-375
 SWT-0.44-252
 SWT-0.54-173		  
 PE-53820
 PE-53821
 PE-53822		  PE-53820S
 PE-53821S
 PE-5322S		  LM259X-L20
 LM259X-L21
 LM259X-L22		 115
78
54		 0,67
0,82
1,00		  SWS-0.67-115
 SWS-0.82-78
 SWS-1.00-54		  SWT-0.67-115
 SWT-0.82-78
 SWT-1.00-54		  
 PE-53823
 PE-53824
 PE-53825		  PE-53823S
 PE-53824S
 PE-53825S		  LM259X-L23
 LM259X-L24
 LM259X-L25		 38
26
18		 1,20
1,48
1,81		  SWS-1.20-38
 SWS-1.48-26
 SWS-1.81-18		  SWT-1.20-38
 SWT-1.48-26
 SWT-1.81-18		  
 PE-53826
 PE-53827
 PE-53828		  PE-53826S
 PE-53827S
 PE-53828S		  LM259X-L26
 LM259X-L27
 LM259X-L28		 377
248
168		 0,68
0,83
1,02		  SWS-0.68-377
 SWS-0.83-248
 SWS-1.02-168		  SWT-0.68-377
 SWT-0.83-248
 SWT-1.02-168		  
 PE-53829
 PE-53830
 PE-53831		  PE-53829S
 PE-53830S
 PE-53831S		  LM259X-L29
 LM259X-L30
 LM259X-L31		 112
77
53		 1,26
1,54
1,87		  SWS-1.26-112
 SWS-1.54-77
 SWS-1.87-53		  SWT-1.26-112
 SWT-1.54-77
 SWT-1.87-53		  
 PE-53932
 PE-53933
 PE-53934		  PE-53932S
 PE-53933S
 PE-53934S		  LM259X-L32
 LM259X-L33
 LM259X-L34		 37
24
17		 2,24
2,74
3,00		  SWS-2.24-37
 SWS-2.74-24
 SWS-3.00-17		  SWT-2.24-37
 SWT-2.74-24
 SWT-3.00-17

 SWC-3.00-17
 PE-53935
 PE-54036		  PE-53935S
 PE-54036S		  LM259X-L35
 LM259X-L36		 250
168		 1,50
1,81		  SWS-1.50-250
 SWS-1.81-168		    SWC-1.50-250
 SWC-1.81-168
 PE-54037
 PE-54038
 PE-54039		  PE-54037S
 PE-54038S
 PE-54039S		  LM259X-L37
 LM259X-L38
 LM259X-L39		 114
77
53		 2,22
2,70
3,00		  SWS-2.22-114
 SWS-2.70-77
 SWS-3.00-53		    SWC-2.22-114
 SWC-2.70-77
 SWC-3.00-53
 PE-54040
 PE-54041		  PE-54040S
 PE-54041S		  LM259X-L40
 LM259X-L41		 38
25		 3,00
3,00		  SWS-3.00-38
 SWS-3.00-25
 SWT-3.00-25		  SWC-3.00-38
 SWC-3.00-25
 PE-54042
 PE-54043		 -
-		  LM259X-L42
 LM259X-L43		 167
110		 2,50
3,00		  SWS-2.50-167
 SWS-3.00-110		    SWC-2.50-167
 SWC-3.00-110
 PE-54044
 PE-53900		  PE-54044S
    -		  LM259X-L44
 LM258X-L		 77
19		 3,00
4,50		  SWS-3.00-77
 SWS-4.50-19		    SWC-3.00-77
 SWC-4.50-19