 
Flyback Transformer
for NSC LM5071 and LM5072
- Developed for National Semiconductor LM5071 and LM5072
PD Controllers
- Offers 84% efficiency as specified in NCS application note AN-1430
- Designed to operate in continuous mode at 250
kHz with input voltage of 24 – 60 V
- Industry standard EP13 surface mount package
- 1500 Vrms isolation from primary and
aux to secondary
- Coilcraft's DA2257-AL and FA2519-AL are also specified by NSC for LM5071 and LM5072
- The FA2677-AL is specified by NSC for LM5072
- RoHS-compliant. 260°C compatible. Tin-silver over tin over nickel
over phos bronze terminations
 Photo  Pricing 
Materials declaration 
PDF data sheet
SPECIFICATIONS
 Dimensions  Schematic
Tape and reel specifications
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DA2383-AL_ |
127.0 |
114.3 |
0.012 |
(sec) |
1.25 |
6 : 1 |
(pri : sec) |
1.0 |
3.3 V, 4.0 A (sec) |
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0.310 |
(aux) |
|
2 : 1 |
(pri : aux) |
|
10 V, 0.05 A (aux) |
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0.255 |
(pri) |
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| 1 |
When
ordering, please specify packaging code: e.g. DA2383-ALD |
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Packaging: |
D = 13" reel, machine-ready
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
200 kHz, 0.2 Vrms, 0 Adc |
| 3 |
Ipk
is peak primary current drawn at minimum input voltage. |
| 4 |
Leakage inductance measured on the primary winding with all secondary pins shorted. |
| 5 |
Output for the secondary is with the windings connected in parallel. |
| 6 |
Ambient temperature range: |
–40°C to +85°C |
| 7 |
Storage temperature range: |
Component: –40°C to +85°C
Packaging: –55°C to +80°C |
| 8 |
Resistance to soldering heat: Three reflows at >217°C for 90 seconds (+260°C ±5°C for 20 – 40 seconds), allowing parts to cool to room temperature between. |
| 9 |
Electrical specifications at 25°C. |
| Refer to Soldering Coilcraft Components before soldering. |
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