Document 328-2
Planar Magnetics for National Semiconductor LM5041
Output Inductor
Inductance2
Inductance2
@ 7.5 Adc
min (µH)
Part
@ 0 Adc
(µH)
DCRmax
(mOhms)
Isolation3
(Vdc)
Isat4
(A)
Irms5
(A)
number1
A9787-AL_
57 7%
47.0
17.0
1100
8.1
12.0
1. When ordering, please specify packaging code:
2. Inductance measured on an Agilent/HP 4284 at 250 kHz, 0.1 Vrms.
3. From pins 1,2 to core.
4. DC current at which inductance drops 10% (typ) from its value without
current.
5. Average current for a 40°C rise above 25°C ambient.
6. Operating temperature range: –40°C to +85°C.
7. Electrical specifications at 25°C.
A9787-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.
Typical L vs Frequency
Typical L vs Current
1000
1000
100
100
10
1
10
1
0.1
1
10
100
1000
10000
0.1
1
10
100
Frequency (MHz)
Current (A)
1,2
3,4
0.45
11,43
max
0.004/0,10
For mounting
stability only
1.30
37,59
max
1.145
29,08
0.12
3,05
For mounting
stability only
1
4
4
1.23
31,24
0.34
8,64
max
0.30
7,62
1
0.075
1,91
Recommended
Land Pattern
Weight: 31.0 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.
Document328-2 Revised06/09/08
© Coilcraft, Inc. 2008