FA2636-AL Datasheet, PDF (1/1 Pages) Coilcraft lnc. – Flyback Transformer

Document 594
Flyback Transformer ForNationalSemiconductor
LM5001 Switch Mode Regulator
The FA2636-AL surface mount flyback transformer was
developed specifically for the National Semiconductor
LM5001 High Voltage Switch Mode regulator for iso-
lated and non-isolated flyback topologies.
It is designed to operate in continuous mode at 250 kHz
with an input voltage of 16 – 36 Volts. This industry-
standard size EP13 transformer features 1500 Vrms
isolation from the primary and auxiliary winding to the
secondary. Output of the auxiliary winding is 7.5 V
used to power the IC.
Coilcraft can also custom design transformers with
voltage, inductance and DCR values to meet your
specific requirements.
For free evaluation samples, contact Coilcraft or order
them on-line at www.coilcraft.com.
Inductance
Part
at 0 A²
number¹ ±10% (µH)
FA2636-AL_ 160
Inductance
at Ipk³
min (µH)
144
DCR max (Ohms)⁴
pri bias sec
0.225 0.340 0.078
Leakage
inductance
max (µH)⁵
1.60
Turns ratio⁶
Ipk³
pri : sec pri : aux (A)
Output
8:2
8 : 3 1.0 5.0 V, 1.0 A
1. When ordering, please specify packaging code:
FA2636-ALD
Packaging: D = 13″ machine-ready reel. EIA-481 embossed plastic
tape (175 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.
2. Inductance is for the primary, measured at 250 kHz, 0.2 Vrms, 0 Adc.
3. Ipk is peak primary current drawn at minimum input voltage.
4. DCR for the secondary is per winding.
5. Leakage inductance measured between pins 3 and 2 with all other pins
shorted.
6. Turns ratio is with the secondary windings connected in parallel.
7. Operating temperature range –40°C to +85°C.
8. Electrical specifications at 25°C.
Dot above pin1
0.500 _max
12,70
0.039
1,00
6
0.530
13,46
max
10
0.699max
17,75
0.512
13,00
0.004 /0,10
0.028
0,70
5
0.061
1,55
0.590
14,99
0.050
1,27
8
3
9
Pri
Sec
2
7
6
4
Aux
5
Secondary windings to be connected
in parallel on the PC board.
0.098
1 _2,50
Recommended
Land Pattern
1
0.098
2,50
Weight:
6.28 g
Terminations: Tin-silver over tin over nickel over phos bronze
Tape and reel: 175/13″ reel 32 mm tape width
© Coilcraft, Inc. 2008
Specifications subject to change without notice.
Please check our website for latest information.
Document 594 Revised 09/03/08