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 & LM257X Series

• Low loss material ensures operation in high frequency switching

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

• 52 KHz, 150 KHz & 260 KH KHz Switching Frequency

• Also suitable for use in high quality filter applications

• Low Cost Inductor

EPI AC4 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

CSIXXXXXXAC4

Rev. 5

2/22/05 FT

42

64

78

121

130

173

196

202

493

Induct.

(µH ± 15%)

@ 0 Adc

DCR

(

Ω Typ.)

.027

.042

.061

.093

.125

.144

.188

.191

.754

Induct.

(µH 15%)

@ Idc

33

47

68

100

100

150

150

150

470

Part

Number

EPI330552AC4

EPI470552AC4

EPI680302AC4

EPI101302AC4

EPI101342AC4

EPI151202AC4

EPI151272AC4

EPI151302AC4

EPI471102AC4

Core Loss

Idc

(mA)

5500

5500

3000

3000

3400

2000

2700

3000

1000

National

Semiconductor

Chip

LM267X-L49

LM267X-L48

LM257X-L68

LM257X-100

LM257X-L43

LM257X-L150

LM259X-L42

LM257X-H150

LM257X-L470

---

---

---

---

320

---

320

---

---

@ Vt1

(mW)

@ Vt2

(mW)

445

380

---

---

---

---

---

---

---

Package AC4

1.350

Max.

(34.29)

.110/.150

(2.79/3.81)

.950

Max.

(24.13)

.450

(11.43)

.610

Max.

(15.49)

.450

(11.43)

Pad Layout

.060 Ø

(1.52)

.475

(12.07)

Vt1

(V-µsec)

150 KHz

---

---

---

---

81.4

---

90.7

---

---

Vt2

(V-µsec)

260 KHz

36.6

42.4

---

---

---

---

---

---

---

@ Vt

°C (Typ.)

34 @ Vt2

42 @ Vt2

24 @ Vt3

28 @ Vt3

44 @ Vt1

24 @ Vt3

43 @ Vt1

55 @ Vt3

27 @ Vt3

Temp.Rise

@ Vt3

(mW)

---

---

300

180

---

125

---

550

213

Vt3

(V-µsec)

52 KHz

---

---

96.2

96.2

---

96.2

---

207.7

207.7

Applications

Vin

Vout

LX

µH

D1

8V-40V

Cin

Cout

CB

10nF

FB

Vsw

Gnd

On/Off

LM267X

+

+

+Vin

+5V

Regulated

Output

Load

LX

µH

D1

1N5822

Cin

Cout

Feedback

Output

Vsw

On/Off

Gnd

LM257X

+

+

7V-40V

(60V for HV)

Unregulated

DC Input

Package AC4V

.375 ± .125

(9.53 ± 3.18)

.950

Max.

(24.13)

Pad Layout

.400

(10.16)

.060 Ø

(1.52)

.550 Max.

(13.97)

.400

(10.16)

Package AC4H

.375 ± .125

(9.53 ± 3.18)

.950

Max.

(24.13)

Pad Layout

.840

(21.34)

.060 Ø

(1.52)

.950

Max.

(24.13)

.840

(21.34)

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