C1453-AL

Document 483
Flyback Transformer
For Texas Instruments TPS23750
PoE Powered Device Controller
• Isolated non-synchronous flyback transformers developed for
Texas Instruments PMP717 reference design.
• Designed for discontinuous conduction mode, 34 – 57 V input
• 1500 Vrms isolation primary to secondary windings
Core material Ferrite
Terminations RoHS tin-silver (96.5/3.5) over tin over nickel over phos
bronze. Other terminations available at additional cost.
Weight 1.4 g
Ambient temperature –40°C to +125°C
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 500 per 13″ reel Plastic tape: 24 mm wide,
0.36 mm thick, 16 mm pocket spacing, 6.13 mm pocket depth
PCB washing Tested with pure water or alcohol only. For other solvents,
see Doc787_PCB_Washing.pdf
Inductance
Inductance Leakage
at 0 Adc2
at Ipk3
Inductance4
Turns ratio
Part
DCR max
pri : sec5 pri : bias
number1
±10% (µH)
min (µH)
(Ohms)
max (µH)
C1453-AL_
50
40
0.185 (pins 3 – 1)
0.030 (pins 6 – 10)
0.030 (pins 7 – 9)
0.385 (pins 4 – 5)
1.10
1 : 0.166
1. When ordering, please specify packaging code:
1 : 0.5
Dot indicates pin 1
1
10
0.453 max
11,50
Output6
1.22
3.3 V, 1.5A
7
6
Pri
Sec
10
9
1
4
6
5
(A)
3
C1453-AL
XXXX Y
C1453-ALD
Packaging:D =13″ machine ready reel. EIA-481 embossed plastic
tape (500 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.
2. Inductance is for the primary, measured at 250 kHz, 0.3 Vrms.
3. Peak primary current drawn at minimum input voltage.
4. Leakage inductance is for the primary winding with the secondary windings shorted.
5. Turns ratio is with the secondary windings connected in parallel.
6. Output of the secondary is with the windings connected in parallel. Bias
winding output is 10 V.
7. Electrical specifications at 25°C.
Refer to Doc 362 “Soldering Surface Mount Components” before soldering.
Ipk3
0.512 max
13,00
Bias
5
Secondary windings to be
connected in parallel on the
PC board.
0.256 max
6,50
0.004 / 0,10
5
6
1
10
0.028
0,70
0.063
1,60
0.079
2,00
0.394
10,00
1
10
0.079
2,00
inches
Dimensions are in
mm
US +1-847-639-6400 [email protected]
UK +44-1236-730595 [email protected]
Taiwan +886-2-2264 3646 [email protected]
China +86-21-6218 8074 [email protected]
Singapore + 65-6484 8412 [email protected]
0.055
1,40
Recommended
Land Pattern
Document 483 Revised 12/21/11
© Coilcraft Inc. 2013
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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