Datasheet > LM257X-H680

LM257X-H680

更新时间： 2024-02-06 07:14:20

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描述
Thru-Hole Power Inductor

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LM257X-H680 数据手册

Thru-Hole Power Inductor

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

EPIXXXXXXAC5 & EPIXXXXXXAC5-LF

• Optimized for National’s LM257X 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

• Add “-LF” after part number for Lead-Free

• 52 KHz Switching Frequency

• Low Cost Inductor

Primary Specification

Part

Number

Induct.

(µH ± 20%)

@ 0 Adc

DCR

(WTyp.)

Induct.

(µH 10%)

@ Idc

Idc

(mA)

Core Loss

@ Vt1

(mW)

Vt1

(V-µSec)

52 KHz

Temp.Rise

@ Vt1

°C (Typ.)

National

Semiconductor

Chip

EPI221302AC5(-LF)

EPI331302AC5(-LF)

EPI471202AC5(-LF)

EPI681132AC5(-LF)

EPI102951AC5(-LF)

LM257X-H220

LM257X-H330

LM257X-H470

LM257X-H680

LM257X-H1000

260

437

.090

.117

.210

.247

.297

220

330

3000

2000

1300

950

510

280

210

150

110

230.8

542

470

757

1093

680

1000

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

Applications

Feedback

Output

7V-40V

(60V for HV)

Unregulated

DC Input

+Vin

+5V

Regulated

Output

Load

LM257X

µH

Vsw

Cin

Cout

1N5822

Gnd

On/Off

Package AC5V

Package AC5

Package AC5H

Pad Layout

1.300

Max.

(33.02)

.060 Ø

(1.52)

.500

(12.70)

.700 Max.

(19.78)

.500

(12.70)

1.300

Max.

(33.02)

.060 Ø

(1.52)

1.300

(33.02)

.375 ± .125

(9.53 ± 3.18)

.700

(19.78)

1.100

(27.94)

1.400

Max.

(35.56)

Pad Layout

.375 ± .125

(9.53 ± 3.18)

1.300

Max.

(33.02)

1.100

(27.94)

.500

(12.70)

.625

(15.75)

.500

(12.70)

.110/.150

(2.79/3.81)

.060 Ø

(1.52)

Notes :

EPIXXXXXXAC5

SnPb

EPIXXXXXXAC5-LF

Hot Tin Dip (Sn)

260°C

1. Lead Finish

2. Peak Solder Rating

(for wave solder process Only)

225°C

4. Weight

51 grams

5. Packaging Information

(Tube)

TBD pcs / tube

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

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

CSIXXXXXXAC5 Rev. 4 7/27/06 FT

PCA ELECTRONICS, INC.

16799 SCHOENBORN ST.

NORTH HILLS, CA 91343

TEL: (818) 892-0761

FAX: (818) 894-5791

http://www.pca.com

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