Document 1110
For TI TPS55340
Flyback Transformer DC-DC Regulator
• Developed for Texas Instruments TPS55340
Boost/SEPIC/Flyback DC-DC Regulator
• Designed to operate at 200 kHz with 2.9–32 Volts input
• 1500 Vrms, one minute isolation from primary windings to
secondary windings
Core material Ferrite
Terminations RoHS tin-silver over tin over nickel over phos bronze.
Other terminations available at additional cost.
Weight 6.5 g
Ambient temperature –40°C to +85°C
Storage temperature Component: –40°C to +85°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 175 per 13″ reel Plastic tape: 32 mm wide,
0.5 mm thick, 28 mm pocket spacing, 12.93 mm pocket depth
PCB washing Tested with pure water or alcohol only. For other solvents,
see Doc787_PCB_Washing.pdf
Inductance Inductance
Leakage
DCR max (Ohms)4
Part
Power
(W)
at 0 A2
at Ipk3
inductance5 Turns ratio6
Ipk3
(A)
number1
±±0ꢀ (ꢁµ)
min (ꢁµ)
pri
sec
max (ꢁµ)
pri : sec
Output7
NA5889-AL_
12
12
10.8
0.03
0.0195
0.140
1 : 0.833
5.5
12 V, 1 A
1. When ordering, please specify packaging code:
NA5889-ALD
Packaging: D = 13″ machine-ready reel. EIA-481 embossed plastic tape (175 parts
per full reel).
Dot above pin1
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 at 200 kHz, 1.0 Vrms, 0 Adc.
3. Peak primary current drawn at minimum input voltage.
0.500
12,70
max
4. DCR for the primary and for the secondary is with windings connected in parallel.
5. Leakage inductance is for the primary and is measured with the secondary shorted.
6. Turns ratio is with the primary and the secondary windings connected in parallel.
7. Output of the secondary is with the windings connected in parallel.
8. Electrical specifications at 25°C.
0.004/0,10
0.039
1,00
0.699
17,75
max
Refer to Doc 362 “Soldering Surface Mount Components” before soldering.
0.050
1,27
0.512
13,00
0.080
2,03
0.590
14,99
0.028
0,70
10
1
1
2
10
9
Recommended
Land Pattern
0.530
13,46
max
Pri
Sec
5
4
6
7
1
5
0.098
2,50
6
0.098
2,50
Primary windings and secondary
windings to be connected in
parallel on PC board
inches
mm
Dimensions are in
These parts are preproduction products for electrical evaluation only.
Document 1110 Revised 03/10/14
US +1-847-639-6400 sales@coilcraft.com
Specification subject to change without notice.
UK +44-1236-730595 sales@coilcraft-europe.com
© Coilcraft Inc. 2014
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.
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
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