LM2586

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SNVS121D – MAY 1996 – REVISED APRIL 2013

TRANSFORMER SELECTION (T)

Table 1 lists the standard transformers available for flyback regulator applications. Included in the table are the

turns ratio(s) for each transformer, as well as the output voltages, input voltage ranges, and the maximum load

currents for each circuit.

Table 1. Transformer Selection Table

Applications

Figure 25

Figure 26

Figure 27

Figure 28

Figure 29

Figure 30

Transformers

T7

T7

T7

T6

T6

T5

4V–6V

4V–6V

8V–16V

4V–6V

18V–36V

18V–36V

3.3V

5V

12V

12V

12V

5V

1.4A

1A

0.8A

0.15A

0.6A

1.8A

1

1

1

1.2

1.2

0.5

−12V

−12V

12V

0.15A

0.6A

0.25A

1.2

1.2

1.15

−12V

0.25A

1.15

Table 2. Transformer Manufacturer Guide

Transformer

Manufacturers' Part Numbers

Type

Surface Mount

Surface Mount

T5

Q4338-B

Q4437-B

PE-68413

—

RL-5532

67140890

T6

Q4339-B

Q4438-B

PE-68414

—

RL-5533

67140900

T7

S6000-A

S6057-A

—

PE-68482

RL-5751

26606

(1)

Coilcraft Inc.,

Phone: (800) 322-2645

1102 Silver Lake Road, Cary, IL 60013

Fax: (708) 639-1469

European Headquarters, 21 Napier Place

Phone: +44 1236 730 595

Wardpark North, Cumbernauld, Scotland G68 0LL

Fax: +44 1236 730 627

(2)

Pulse Engineering Inc.,

Phone: (619) 674-8100

12220 World Trade Drive, San Diego, CA 92128

Fax: (619) 674 -8262

European Headquarters, Dunmore Road

Phone: +353 93 24 107

Tuam, Co. Galway, Ireland

Fax: +353 93 24 459

(3)

Renco Electronics Inc.,

Phone: (800) 645-5828

60 Jeffryn Blvd. East, Deer Park, NY 11729

Fax: (516) 586-5562

(4)

Schott Corp.,

Phone: (612) 475-1173

1000 Parkers Lane Road, Wayzata, MN 55391

Fax: (612) 475-1786

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