Document 465
For National Semiconductor
LM5032 PWM Controller
Planar Transformer
•ꢀDevelopedꢀforꢀtheꢀNSCꢀLM5032ꢀdualꢀinterleavedꢀcurrentꢀmodeꢀ
PWMꢀcontrollerꢀforꢀapplicationsꢀupꢀtoꢀ100ꢀWatts.
•ꢀCanꢀbeꢀusedꢀinꢀaꢀdualꢀforwardꢀconverterꢀorꢀinꢀbothꢀinterleavedꢀ
powerꢀstagesꢀofꢀaꢀhigh-currentꢀconverter.
•ꢀLowꢀleakageꢀinductance,ꢀexcellentꢀDCR
•ꢀInterwindingꢀisolation:ꢀ1500ꢀVdc.
Core material Ferrite
Terminationsꢀ RoHSꢀMatteꢀtinꢀoverꢀnickelꢀoverꢀbrass
Weight 10.2 g
Ambient temperatureꢀ –40°Cꢀtoꢀ+85°C
Storage temperatureꢀ Component:ꢀ–40°Cꢀtoꢀ+85°C.ꢀ
Tapeꢀandꢀreelꢀpackaging:ꢀ–40°Cꢀtoꢀ+80°C
Resistance to soldering heat Maxꢀthreeꢀ40ꢀsecondꢀreflowsꢀatꢀ
+260°C,ꢀpartsꢀcooledꢀtoꢀroomꢀtemperatureꢀbetweenꢀcycles
Moisture Sensitivity Level (MSL)ꢀ 1ꢀ(unlimitedꢀfloorꢀlifeꢀatꢀ<30°Cꢀ/ꢀ
85% relative humidity)
Failures in Time (FIT) / Mean Time Between Failures (MTBF)
38ꢀperꢀbillionꢀhoursꢀ/ꢀ26,315,789ꢀhours,ꢀcalculatedꢀperꢀTelcordiaꢀSR-332
Packaging 200 per 13″ꢀreelꢀ Plasticꢀtape:ꢀ 44ꢀmmꢀwide,ꢀ
0.37ꢀmmꢀthick,ꢀ32ꢀmmꢀpocketꢀspacing,ꢀ9.35ꢀmmꢀpocketꢀdepth
PCB washingꢀ Onlyꢀpureꢀwaterꢀorꢀalcoholꢀrecommended
Output
voltage
nom (V)
Output
current
(A rms)
Primary
Leakage
Pri/sec
Part
Output
power (W)
inductance2 inductance3
DCR max
(mOhms)
Turns ratio Isolation
number1
min (µH)
max (µH)
pri : sec
(Vdc)
C1539-AL_
100
12
8.33
320.0
0.25
pri: 63.0
sec: 15.0
2 : 1
1500
1. When ordering, please specify a packaging code:
C1539-ALD
2.ꢀ InductanceꢀmeasuredꢀonꢀanꢀAgilent/HPꢀ4284ꢀbetweenꢀpinsꢀ2ꢀandꢀ4ꢀatꢀ250ꢀ
kHz,ꢀ0.1ꢀVrms,ꢀ0ꢀAdc.
3.ꢀ Leakageꢀinductanceꢀmeasuredꢀbetweenꢀpinsꢀ2ꢀandꢀ4ꢀatꢀ100ꢀkHz,ꢀ0.1ꢀVrms,ꢀ
0ꢀAdcꢀwithꢀpins7ꢀandꢀ9ꢀshorted.
4.ꢀ Storageꢀandꢀambientꢀoperatingꢀtemperatureꢀrange:ꢀ–40°Cꢀtoꢀ+85°C.
5.ꢀ Electricalꢀspecificationsꢀatꢀ25°C.
Packaging: D = 13″ machine ready reel. EIA-481 embossed plastic
tape (200 per full reel).
B = Less than full reel. In tape, but not machine ready.
To have a leader and trailer added ($25 charge), use
code letter D instead.
Dot indicates pin 1
7
Secondary
9
2
Primary
0.820
20,83
1
2
3
4
5
10
9
4
2
4
9
7
0.810
20,57
0.190
4,83
max
8
7
6
0.080
2,03
Ø
Recommended
Land Pattern
0.920
23,37
max
Parts manufactured prior
to December 2011 may
be marked differently.
0.360
9,14
max
inches
mm
Dimensions are in
0.006/0,15
Document 465 Revised 12/21/11