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

Thru-Hole Power Inductor

TEL: (818) 892-0761

FAX: (818) 894-5791

http://www.pca.com

PCA ELECTRONICS, INC.

16799 SCHOENBORN ST.

NORTH HILLS, CA 91343

• Optimized for National’s LM267X & LM259X Series

• Low loss material ensures operation in high frequency switching

converters, such as Buck, Boost or as output averaging filter inductor

• Also suitable for use in high quality filter applications

• 150 KHz & 500 KHz Switching Frequency

• Low Cost Inductor

EPI AC3 Series

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

Primary Specification

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

CSIXXXXXXAC3

Rev. 5

2/22/05 FT

27

27

40

38

60

60

87

87

91

91

128

194

265

Induct.

(µH ± 20%)

@ 0 Adc

DCR

(

Ω Typ.)

0.025

0.025

0.038

0.046

0.074

0.074

0.090

0.090

0.091

0.091

0.110

0.260

0.394

Vt1

(V-µSec)

150 KHz

---

---

---

33.4

40.0

---

46.7

---

26.7

---

55.4

56.7

73.4

@ Vt1

°C (Typ.)

---

---

---

31

42

---

37

---

43

---

33

43

39

Induct.

(µH 15%)

@ Idc

22

22

33

33

47

47

68

68

68

68

100

150

220

Part

Number

EPI220502AC3

EPI330402AC3

EPI330352AC3

EPI470352AC3

EPI680302AC3

EPI680352AC3

EPI101252AC3

EPI151202AC3

EPI221152AC3

Core Loss

Idc

(mA)

5000

5000

4000

3500

3500

3500

3000

3000

3500

3500

2500

2000

1500

Vt2

(V-µSec)

260 KHz

23.1

23.1

27.0

---

---

28.5

---

30.8

---

12.7

---

---

--

National

Semiconductor

Chip

LM267X-L41

LM267X-L50

LM267X-L40

LM259X-L40

LM259X-L39

LM267X-L39

LM259X-L38

LM267X-L38

LM267X-L44

LM259X-L44

LM259X-L37

LM259X-L36

LM259X-L35

@ Vt2

°C (Typ.)

35

35

34

---

---

42

---

37

---

44

---

---

---

Temp.Rise

---

---

---

210

185

---

155

---

45

---

155

113

134

@ Vt1

(mW)

@ Vt2

(mW)

290

290

260

---

---

185

---

155

---

60

---

---

--

Package AC3

.950

Max.

(24.13)

.110/.150

(2.79/3.81)

.840

Max.

(21.33)

.300

(7.62)

.470

Max.

(11.94)

.300

(7.62)

Pad Layout

.060 Ø

(1.52)

.415

(10.54)

Applications

Vin

Vout

LX

µH

D1

8V-40V

Cin

Cout

CB

10nF

FB

Vsw

Gnd

On/Off

LM267X

+

+

+Vin

Regulated

Output

Load

LX

µH

D1

1N5822

Cin

Cout

Feedback

Output

Vsw

On/Off

Gnd

LM259X

+

+

Unregulated

DC Input

Package AC3V

.375 ± .125

(9.53 ± 3.18)

.840

Max.

(21.33)

Pad Layout

.280

(7.11)

.060 Ø

(1.52)

.470 Max.

(11.94)

.280

(7.11)

Package AC3H

.375 ± .125

(9.53 ± 3.18)

.840

Max.

(21.33)

Pad Layout

.720

(18.29)

.060 Ø

(1.52)

.840

Max.

(21.33)

.720

(18.29)

For no header version : add “V” for Vertical Mount and add “H” for Horizonal Mount