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Models LPT-4545-xxxLA, LB, LC
Vishay Dale
Inductors/Transformers
Customizable, Surface Mount Torodial, Kool-Mu (R) , Powdered Iron and MPP Cores
FEATURES * Toroidal design for minimal EMI radiation in DC to DC converter applications. * Designed to support the growing need for efficient DC to DC converters in battery operated equipment. * Two separate windings provide versatility by ability to connect windings in series or parallel. * Supplied on tape and reel and is designed to be pick and place compatible. * Custom versions and turns ratios available. Contact the factory with your specifications. * Half and quarter height parts available upon request. STANDARD ELECTRICAL SPECIFICATIONS (In Parallel)
MODEL LA=KOOL-MU(R) CORE LPT-4545-1R0LA LPT-4545-1R5LA LPT-4545-2R5LA LPT-4545-3R3LA LPT-4545-5R0LA LPT-4545-100LA LPT-4545-150LA LPT-4545-200LA LPT-4545-250LA LPT-4545-330LA LPT-4545-500LA LPT-4545-101LA LPT-4545-151LA LPT-4545-251LA LPT-4545-301LA LPT-4545-331LA LB=POWDER IRON LPT-4545-1R0LB LPT-4545-1R5LB LPT-4545-2R5LB LPT-4545-3R3LB LPT-4545-5R0LB LPT-4545-100LB LPT-4545-150LB LPT-4545-250LB LPT-4545-330LB LPT-4545-500LB LPT-4545-101LB LPT-4545-151LB LPT-4545-251LB LPT-4545-331LB LC=MPP LPT-4545-1R0LC LPT-4545-1R5LC LPT-4545-2R5LC LPT-4545-3R3LC LPT-4545-5R0LC LPT-4545-100LC LPT-4545-150LC LPT-4545-250LC LPT-4545-330LC LPT-4545-500LC LPT-4545-101LC LPT-4545-151LC LPT-4545-251LC LPT-4545-331LC ACTUAL INDUCTANCE - H (LOC) 15% 0.832 1.30 2.55 3.33 5.20 10.2 15.0 20.8 25.2 32.5 50.0 101 152 248 300 333 0.838 1.21 2.71 3.35 5.66 10.9 14.8 26.3 34.3 51.0 105 150 248 335 0.838 1.30 2.55 3.33 5.20 10.2 15.0 25.2 32.5 50.0 101 152 248 333 RATED IDC (40C ) 6.90 6.45 5.75 5.50 4.45 3.45 2.79 2.61 2.25 1.85 1.50 1.15 0.92 0.73 0.63 0.60 6.61 6.08 5.01 4.22 3.32 2.52 2.10 1.61 1.34 1.09 0.81 0.66 0.52 0.43 7.54 6.82 5.84 5.49 4.37 3.32 2.69 2.12 1.76 1.41 1.07 0.86 0.67 0.56
INDUCTANCE @ IDC (LBIAS) [30%] 0.51 @ 7.62 0.80 @ 6.10 1.57 @ 4.35 2.05 @ 3.81 3.20 @ 3.05 6.28 @ 2.18 9.26 @ 1.79 12.4 @ 1.53 15.5 @ 1.39 20.0 @ 1.22 30.8 @ 0.98 62.0 @ 0.69 93.4 @ 0.56 153.0 @ 0.44 179.0 @ 0.40 205.0 @ 0.38 0.53 @ 7.09 0.76 @ 5.91 1.71 @ 3.94 2.11 @ 3.54 3.57 @ 2.73 6.84 @ 1.97 9.31 @ 1.69 16.5 @ 1.27 21.6 @ 1.11 32.1 @ 0.91 66.2 @ 0.63 94.7 @ 0.53 156.0 @ 0.41 211.0 @ 0.35 0.54 @ 11.11 0.84 @ 8.89 1.64 @ 6.35 2.14 @ 5.56 3.35 @ 4.45 6.56 @ 3.18 9.68 @ 2.61 16.2 @ 2.02 20.9 @ 1.78 32.2 @ 1.43 64.8 @ 1.01 97.7 @ 0.82 159.0 @ 0.64 214.0 @ 0.56
DCR
0.003 0.004 0.006 0.007 0.011 0.019 0.029 0.038 0.048 0.068 0.107 0.195 0.302 0.491 0.670 0.706 0.004 0.005 0.009 0.012 0.019 0.034 0.049 0.084 0.119 0.180 0.342 0.509 0.831 10.194 0.004 0.004 0.007 0.008 0.012 0.022 0.033 0.054 0.076 0.119 0.219 0.340 0.551 0.788
Document Number 34069 Revision 29-Nov-99
www.vishay.com 63
Models LPT-4545-xxxLA, LB, LC
Vishay Dale
DIMENSIONAL CONFIGURATIONS [Numbers in brackets indicate millimeters] RECOMMENDED LAYOUT PATTERN (Top View) [Numbers in brackets indicate millimeters]
.160 [4.06]
.450 .005 Dia. [11.42 .127]
1
.462 .005 Dia. [11.73 .127]
2
Vishay Dale
LPT-4545xxxLX
3
4
.550 [13.75] Max.
.492 sq. [12.5 sq.]
.120 [3.05]
.250 [6.350] Max.
.492 sq. [12.5 sq.]
SCHEMATICS - CONNECTION DIAGRAMS
PART MARKING
Transformer
1 4 1
Parallel
4 1
Series
4
-- Vishay Dale -- Model number -- Pin 1 identification
2
3
2
3
2
3
HOW TO ORDER
LPT MODEL 4545 SIZE 100 INDUCTANCE VALUE (H)
15%
INDUCTANCE TOLERANCE
LA/LB/LC CORE/HEIGHT LA = KOOL-MU(R) LB = POWDER IRON LC = MPP
PACKAGING [Numbers in brackets indicate millimeters]
Pocket Tape Orientation
Carrier Tape Width Pitch Parts per 13" [330.2] Reel
.945 [24.0] .630 [16.0] 600
All embossed carrier tape packaging will be in compliance with the latest revision of EIA-481.
REELING DIRECTION
www.vishay.com 64
Document Number 34069 Revision 29-Nov-99

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