E L E C T R O N I C S I N C .

Flyback Power Transformer

TEL: (818) 892-0761

FAX: (818) 894-5791

http://www.pca.com

PCA ELECTRONICS, INC.

16799 SCHOENBORN ST.

NORTH HILLS, CA 91343

EPC3166-X

Product performance is limited to specified parameters. Data is subject to change without prior notice.

Electrical Parameters @ 25° C

Unless Otherwise Specified Dimensions are in Inches /mm ± .010 /.25

CSC3166-X

Rev. 3

2/25/04 FT

Voltage

(Vdc)

Primary

OCL

(µH ± 10%)

22

22

22

22

22

66

65

65

47

47

47

@ 10 KHz,

0.1 Vrms

LM2587/88

LM2587/88

LM2587/88

LM2585/86

LM2587/88

LM2585/86

LM2585/86

LM2585/86

LM2585/86

LM2585/86

LM2585/86

Chipset

4-6

4-6

8-16

14-16

4-6

18-36

4-6

18-36

4-6

4-6

8-16

V in

Pins 1-2

3.3

5.0

12.0

11.25

12.0

5.0

12.0

12.0

3.3

5.0

12.0

V out

1

Current

(Amp. Max.)

PCA

Part

Number

EPC3166-1

EPC3166-2

EPC3166-5

EPC3166-6

EPC3166-7

N

N

N

N

-12

12

-12

-12

N

N

N

V out

2

N

N

N

N

N

-12

N

N

N

N

N

V out

3

1.8

1.4

1.2

2.5

0.3

1.8

0.15

0.6

1.4

1.0

0.8

Sec.

1

N

N

N

N

0.3

0.25

0.15

0.6

N

N

N

Sec.

2

N

N

N

N

N

0.25

N

N

N

N

N

Sec.

3

A

A

A

A

B

C

B

B

A

A

A

Schematic

• Used in SMPS Flyback Topology

• Designed for use with National Semiconductor Chips

LM2585 to LM2588

• UL94V-0 Recognized Components

• UL1446 Class B Insulation System

• Very Low Core Loss

• 750 Vrms Isolation

LM2585/2586/2587 Switching Frequency : 100 KHz •

LM2588 Switching Frequency : 200 KHz •

• Note : “N” means Not Required/No Connections •

T1

T1

T1

---

T2

T5

T6

T6

T7

T7

T7

Xfmr

Code

1:1

1:1

1:1

1:1

1:2.5:2.5

1:.5:1.15:1.15

1:1.2:1.2

1:1.2:1.2

1:1

1:1

1:1

Turns

Ratio

Schematic B

2

1

Vin

5

6

8

7

Vout 1

Vout 2

Schematic C

Vin

5

6

8

7

Vout 1

Vout 2

Vout 3

1

2

4

3

Schematic A

Vin

8

7

Vout 1

1

2

Package

PCA

EPC3166-X

D.C

.689 Max.

(17.50)

.150 Min.

(3.80)

.787 Max.

(20.00)

.201

(5.10)

White Dot

Pin # 1

85

.514

(13.05)

.669 Max.

(17.00)

.150

(3.80)

Side

Bottom

.026

(.650)

14

.118 Max.

(3.00)