A9786-AL Datasheet, PDF (1/2 Pages) Coilcraft lnc. – Planar Magnetics

Document 328-1
Planar Magnetics ForNationalSemiconductor
LM5041 IC
This planar transformer and inductor pair were designed
specifically for National Semiconductor’s LM5041 IC.
The A9786-A transformer is engineered for use in high-
current telecom power supply applications that require
high efficiency in a low-profile package.The auxiliary
winding can be used to control input current to PWMs. It
offers very high current handling capability and ex-
tremely low DC resistance in a low profile package.
Coilcraft’s A9787-A inductor is designed as the output
choke for the LM5041.
Planar magnetics offer high power densities along with
great reliability and repeatability. Windings are etched
into a printed circuit board, ensuring high efficiency and
consistency.
Request free evaluation samples by contacting Coilcraft
or visiting www.coilcraft.com.
Transformer
Part
Output
number¹ power (W)
A9786-AL_ 150
Input
voltage
range (V)
36 – 75
Output
voltage (V)
2.5
Output
current
(A rms)
60.0
Primary
inductance¹
min (mH)
1.25
Leakage
inductance²
max (µH)
DCR max
(mOhms)
Pri/sec
isolation
(Vdc)
0.90
Primary: 62.5 (1 – 3)
1100
Secondary: 0.91 (5,6 – 9,10)
200 (4 – 11)
1. When ordering, please specify packaging code:
A9786-ALD
Packaging: D = 13″ machine-ready reel. EIA-481 embossed plastic
tape (125 parts 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 1 and 3 at 250
kHz, 0.1 Vrms, 0 Adc.
3. Leakage inductance measured between pins 1 and 3 at 100 kHz,
0.1 Vrms, 0 Adc with all secondary pins shorted.
4. Operating temperature range: –40°C to +85°C.
5. Electrical specifications at 25°C.
0.004 /0,10
3
1.23 _max
31,24
2
1
1.48 _max
37,59
5
10
0.45 _max
11,43
4
1
0.285
7,24 2
1.32
33,53
1.21
30,73
1.15
29,21
10
3
5
11
0.075
1,91
‡
Recommended
Land Pattern
5,6
1
8T
PRI ²
1T
7,8 _SEC
1T
9,10
8T
4
3
11
4T
AUX
0.31
11
7,87
4
0.12 0.175
3,05 4,45
Weight: 33.4 g
Terminations: Matte tin over nickel over brass
Tape and reel: 125/13″ reel 56 mm tape
Specifications subject to change without notice.
Please check our website for latest information.
Document 328-1 Revised 06/09/08
© Coilcraft, Inc. 2008