Document 1075
For Linear Technology
Flyback Transformer LT8584
• Developed for Linear Technology LT8584 Isolated Monolithic
Active Cell Balancer
• Designed to operate at 140 kHz; Rated for 7–12 Watts
• 1500 Vrms, one minute isolation between primary and secondary
• AEC-Q200 Grade 1 qualified (–40°C to +125°C ambient)
Core material Ferrite
Terminations RoHS tin-silver over tin over nickel over phos bronze.
Other terminations available at additional cost.
Weight 3.9 – 4.2 g
Ambient temperature –40°C to +125°C
Maximum part temperature +125°C (ambient + temp rise)
Storage temperature Component: –40°C to +125°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: 32 mm wide, 0.5 mm thick,
24 mm pocket spacing, 11.2 mm pocket depth
PCB washing Tested to MIL-STD-202 Method 215 plus an additional
aqueous wash. See Doc787_PCB_Washing.pdf.
Input Inductance Inductance
Leakage
inductance
max (ꢁµ)5
Output
voltage
(V)
DCR max (Ohms)4
Part
voltage
(V)
at 0 A2
at Ipk3
Turns ratio6
pri : sec
Ipk3
(A)
number1
±±0ꢀ (ꢁµ)
min (ꢁµ)
pri
sec
NA5743-AL_
2–8
4.0
3.6
0.012
0.500
0.116
1 : 4
7.0
30–80
1. When ordering, please specify packaging code:
NA5743-ALD
Dot above pin1
Packaging: D = 13″ machine-ready reel. EIA-481 embossed plastic
0.450
11,43
max
tape (200 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.
0.004/0,10
0.041
1,05
0.600
max
2. Inductance is for the primary, measured at 150 kHz, 0.1 Vrms, 0 Adc.
3. Ipk is peak primary current drawn at minimum input voltage.
4. DCR for the primary is measured with windings connected in parallel.
5. Leakage inductance is for the primary, measured with secondary pins
shorted.
6. Turns ratio is with the primary windings connected in parallel.
7. Electrical specifications at 25°C.
Internal code
15,24
0.050
0.413
10,50
0.024
0,60
1,27
0.080
2,03
0.460
11,68
5
1
4
1
Refer to Doc 362 “Soldering Surface Mount Components” before soldering.
0.50
max
12,7
1
2
8
0.098
2,50
Recommended
Land Pattern
0.098
2,50
5
Pri
Sec
8
inches
mm
Dimensions are in
3
4
Primary windings to be connected
in parallel on PC board
Document 1075 Revised 06/10/16
US +1-847-639-6400 sales@coilcraft.com
UK +44-1236-730595 sales@coilcraft-europe.com
Taiwan +886-2-2264 3646 sales@coilcraft.com.tw
China +86-21-6218 8074 sales@coilcraft.com.cn
Singapore + 65-6484 8412 sales@coilcraft.com.sg
© Coilcraft Inc. 2016
This product may not be used in medical or high
risk applications without prior Coilcraft approval.
Specification subject to change without notice.
Please check web site for latest information.
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