Document 305
For National Semiconductor
PlanarTransformers LM5030 Controller IC
Lessthan10 mmhigh,Coilcraft’splanartransformersare
ideal for use in high-current telecom power supply appli-
cationsthatrequirehighefficiencyinalow-profilepackage.
Thesetransformersare designedspecificallytoperform
withtheNationalSemiconductorLM5030Push-PullCur-
rent Mode PWM Controller. They provide three different
output ratings to suit a variety of applications All offer
1500 Vrms primary to secondary isolation.
Coilcraft’s A9785-B, A0153-A and B0414-A are output
chokesandincludeanextrawindingforauxiliaryvoltage
supply. Our MSS6132-103 functions as the input filter
choke in the same circuit. Refer to separate data sheets
for additional information on these parts.
Request free evaluation samples by contacting Coilcraft
or visiting www.coilcraft.com.
Output
power
(W)
Input
Output
Primary
Leakage
Turns
ratio
pri : sec
current2 inductance3 inductance
DCR max (Ohms)
Part
voltage
Output
number1
range (V) voltage (V)
(A rms) min (mH)
max (µH)
pri
sec
A9784-BL_
A0152-AL_
B0310-AL_
33
35
60
36 – 75
36 – 75
36 – 75
3.3
5.0
12.0
10.0
7.0
5.0
1.30
1.30
1.30
3.50
2.50
2.50
0.850
0.850
0.850
0.016
0.018
0.060
6 : 1
4 : 1
2 : 1
1. When ordering, please specify packaging code:
B0310-ALD
2. 15°C temperature rise typical at output current.
3. Inductance measured between pins 1 and 3 at 250 kHz, 0.1 Vrms,
0 Adc.
4. Operating temperature range: –40°C to +85°C.
5. Electrical specifications at 25°C.
Packaging: D = 13″ machine ready reel. EIA-481 embossed plastic
tape (250 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.
1.320
max
1.115 0.010
28,32 0,25
33,53
3
4
5
0.105
0,267
0.334 0.010
8,48 0,25
Recommended
Land Pattern
0.870
22,10
max
max
2
1
0.334 0.010
8,48 0,25
6
0.340
8,64
Weight:
Terminations:
9.5 – 10.9 g
Matte tin over nickel over brass
0.004/0,10
Tapeandreel: 250/13″ reel 56 mm tape
Specifications subject to change without notice.
Please check our website for latest information.
Document 305 Revised 09/30/05
© Coilcraft, Inc. 2007