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GA3372_12 Datasheet, PDF (1/1 Pages) Coilcraft lnc. – Flyback Transformer | |||
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Document 655
Flyback Transformer ForNationalSemiconductorLM5015
Two-Switch DC-DC Regulator
⢠Referenced on NSC application notes ANâ1724 and AN-1725
⢠Designed to operate at 250 kHz in continuous conduction
mode with 36âââ72 Volts input
⢠1500 Vrms, one minute isolation from the primary and auxiliary
to the secondary
Core materialâFerrite
Terminationsâ RoHS tin-silver over tin over nickel over phos bronze.
Other terminations available at additional cost.
Weightâ 6.0 g
Ambient temperatureâ â40°C to +85°C
Storage temperatureâ Component: â40°C to +85°C.
Tape and reel packaging: â40°C to +80°C
Resistance to soldering heatâ Max three 40 second reflows at
+260°C, parts cooled to room temperature between cycles
Moisture Sensitivity Level (MSL)â 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
Packagingâ 175 per 13â³ reelâ Plastic tape:â 32 mm wide, 0.5 mm thick,
28 mm pocket spacing, 12.93 mm pocket depth
PCB washingâ Only pure water or alcohol recommended
Inductance
Part
â number1
Po(Ww)er ±1â a0t%0
A2
(µH)
Inductance
mâ aint I(pµkH3)
â
â DCR max (Ohms)4
priââ secââ aux
â
Leakage
inductance5 â Turns
max (µH) pri : secâ
ratio6
pri : aux
GA3372-AL_ 13
102.0
91.8 0.185 0.0175 0.270 0.780
1 : 0.25 1 : 0.50
â Ipk3
(A)
1.2
â Output7
5 V, 2.6 A
1. When ordering, please specify packaging code:
GA3372-ALD
Packaging: D = 13â³ 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 measured at 250 kHz, 0.7 Vrms, 0 Adc.
3. Peak primary current drawn at minimum input voltage.
4. DCR 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 secondary windings connected in parallel.
7. Output of the secondary is with the windings connected in parallel. Auxiliary winding
output is 10 V, 20 mA.
8. Electrical specifications at 25°C.
Refer to Doc 362 âSoldering Surface Mount Componentsâ before soldering.
0.500
12,70
max
0.039
1,00
Dot above pin1
0.699
17,75
max
0.004 /0,10
1
Primary
10
9
Secondary
2
7
6
4
Auxiliary
5
Secondary windings to be connected in
parallel on PC board
0.080
2,03
1
0.590
14,99
Recommended
Land Pattern
0.050
1,27
0.098
2,50
5
0.530
13,46
max
1
0.512
13,00
Dimensions are in
inches
mm
0.028
6 0,70
10
0.098
2,50
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
Document 655â Revised 10/28/08
© Coilcraft Inc. 2012
This product may not be used in medical of high
risk applications without prior Coilcraft approval.
Specification subject to change without notice.
Please check out web site for latest information.
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