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C1453-AL Datasheet

Flyback Transformers

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Document 483
Flyback Transformer ForTexas 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 13reel  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
Part
at 0 Adc2
at Ipk3
DCR max Inductance4
Turns ratio
number1
±10% (µH) min (µH)
(Ohms)
max (µH) pri : sec5   pri : bias
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 : 0.5
Ipk3
(A)
1.22
Output6
3.3 V, 1.5A
1. When ordering, please specify packaging code:
C1453-ALD
Packaging: D = 13machine 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 wind-
ings 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.
1
0.453
11,50
max
5
0.256
6,50
max
0.028
0,70
5
Dot indicates pin 1
10
0.512
13,00
max
6
7
36
Pri Sec
1
10
9
4
Bias
5
Secondary windings to be
connected in parallel on the
PC board.
0.004 / 0,10
0.063
6
1,60
0.079
2,00
0.394
10,00
1 10
0.079
2,00
1
Dimensions are in
inches
mm
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
10 0.055 Recommended
1,40 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.


Part Number C1453-AL
Description Flyback Transformers
Maker Coilcraft
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