C1539-AL

Document 465
Planar Transformer
For National Semiconductor
LM5032 PWM Controller
• Developed for the NSC LM5032 dual interleaved current mode
PWM controller for applications up to 100 Watts.
• Can be used in a dual forward converter or in both interleaved
power stages of a high-current converter.
• Low leakage inductance, excellent DCR
• Interwinding isolation: 1500 Vdc.
Core material Ferrite
Terminations RoHS Matte tin over nickel over brass
Weight 10.2 g
Ambient temperature –40°C to +85°C
Storage temperature Component: –40°C to +85°C.
Tape and reel packaging: –40°C to +80°C
Resistance to soldering heat Max three 40 second reflows at
+260°C, parts cooled to room temperature between cycles
Moisture Sensitivity Level (MSL) 1 (unlimited floor life at <30°C /
85% relative humidity)
Failures in Time (FIT) / Mean Time Between Failures (MTBF)
38 per billion hours / 26,315,789 hours, calculated per Telcordia SR-332
Packaging 200 per 13″ reel Plastic tape: 44 mm wide,
0.37 mm thick, 32 mm pocket spacing, 9.35 mm pocket depth
PCB washing Only pure water or alcohol recommended
Output Output Primary Leakage
Pri/sec
Part
Output
voltage current inductance2 inductance3
DCR max
Turns ratio Isolation
number1 power (W)
nom (V)
(A rms)
min (µH)
max (µH)
(mOhms)
pri : sec(Vdc)
C1539-AL_
100
12
8.33
320.0
0.25
pri:63.0
2 : 11500
sec:
15.0
1. When ordering, please specify a packaging code:
C1539-ALD
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.
2. Inductance measured on an Agilent/HP 4284 between pins 2 and 4 at 250
kHz, 0.1 Vrms, 0 Adc.
3. Leakage inductance measured between pins 2 and 4 at 100 kHz, 0.1 Vrms,
0 Adc with pins7 and 9 shorted.
4. Storage and ambient operating temperature range: –40°C to +85°C.
5. Electrical specifications at 25°C.
Dot indicates pin 1
4
5
C1539-AL
20,57
XXXXY
1
2
0.810 max
3
0.920
max
23,37
7
2
10
9
8
7
6
Primary
0.820
20,83
2
9
4
7
4
Secondary
9
0.190
4,83
0.080
Ø
2,03
Recommended
Land Pattern
Parts manufactured prior
to December 2011 may
be marked differently.
0.360 max
9,14
0.006 /0,15
Dimensions are in
inches
mm
Document 465 Revised 12/21/11
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