Document 301 -1
Output Choke Inductors
For National Semiconductor
LM5030 Controller IC
These low-profile inductors are designed specifically for
the National Semiconductor LM5030 Push-Pull Current
Mode PWM Controllers. The 33 Watt design specifies our
A9785-B, the 35 Watt design uses the A0153-A and the
60 Watt design uses the B0414-A.
They are the output chokes for Coilcraft’s planar trans-
formers (A9784-B, A0152-A and B0310-A). The auxiliary
winding controls the input current to the PWM.
The National Semiconductor design also specifies
Coilcraft’s MSS6132-103 power inductor for the input
choke. Refer to separate data sheets for additional
information on these Coilcraft parts.
Request free evaluation samples by contacting Coilcraft
or visiting
www.coilcraft.com.
Part
number
A9785-B
A0153-A
B0414-A
Power
(W)
33
35
60
Inductance
1
at 0 Adc
±10% (µH)
7.0
7.0
13.8
Inductance
1
±10% (µH)
6.71 @ 12.0 Adc
6.20 @ 10.0 Adc
13.80 @ 5.0 Adc
DCR max (Ohms)
Main
Aux
winding
winding
0.0066
1.95
0.0066
1.32
0.0098
0.68
Isolation
(V)
1500
1500
1500
I
sat
2
(A)
15.0
14.5
8.0
I
rms
3
(A)
12.5
12.5
9.5
1. Inductance measured at 10.0 kHz, 0.1 Vrms.
2. DC current at which inductance drops 12% (typ) from its value without current.
3. Average current for a 40°C rise from 25°C ambient.
4. Operating temperature range -40°C to +85°C.
5. Electrical specifications at 25°C.
0.400 max
10,16
0.004 / 0,10
1.020 max
25,91
1.040
26,42
Schematic
0.910 max
23,11
0.148 typ
3,76
Recommended
Land Pattern
Tape and reel:
200/13″
44 mm tape width
0.060 × 0.090
typ
1,52 × 2,29
Specifications subject to change without notice.
Please check our website for latest information. Document 301-1
Revised 01/28/05
© Coilcraft, Inc. 2005
Document 301 -2
Output Choke Inductors for LM5030 IC
Typical L vs Frequency
100
Typical L vs Current
100
Inductance (µH)
B0414-A
10
A9785-B
A0153-A
Inductance (µH)
B0414-A
10
A0153-A
A9785-B
1
0.1
1
10
1
1
10
100
Frequency (MHz)
Current (A)
Typical Temperature Rise vs Current
70
Temperature rise (from 25°C)
60
50
40
30
20
10
0
0
2
4
6
8
B0414-A
A9785-B
A0153-A
10
12
14
16
Current (A)
Specifications subject to change without notice.
Please check our website for latest information. Document 301-2
Revised 01/28/05
© Coilcraft, Inc. 2005
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