Flyback Transformer for NSC LM5001

SMT Flyback Transformer
for National Semiconductor LM5001

Developed for NSC LM5001 Switch Mode Regulator

Isolated flyback transformer designed to operate in continuous mode

Designed for 16 – 36 Volt input; 250 kHz operating frequency

1500 Vrms isolation from primary and auxiliary to secondary

5.0 V, 1.0 A output; 7.5 V auxiliary winding output

RoHS-compliant. 260°C compatible. Tin-silver over tin over nickel over phos bronze terminations.

SPECIFICATIONS

1	When ordering, please specify packaging code: e.g. FA2636-ALD
	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 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 on the primary windings with all other pins shorted.
6	Turns ratio is with the secondary windings connected in parallel.
7	Ambient temperature range:	–40°C to +85°C
8	Storage temperature range:	Component: –40°C to +85°C Packaging: –55°C to +80°C
9	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.
10	Electrical specifications at 25°C.
Refer to Soldering Coilcraft Components before soldering.

SMT Flyback Transformer for National Semiconductor LM5001