RT7257B

14

DS7257B-03

September 2012

www.richtek.com

Richtek Technology Corporation

5F, No. 20, Taiyuen Street, Chupei City

Hsinchu, Taiwan, R.O.C.

Tel: (8863)5526789

Richtek products are sold by description only. Richtek reserves the right to change the circuitry and/or specifications without notice at any time. Customers should

obtain the latest relevant information and data sheets before placing orders and should verify that such information is current and complete. Richtek cannot

assume responsibility for use of any circuitry other than circuitry entirely embodied in a Richtek product. Information furnished by Richtek is believed to be

accurate and reliable. However, no responsibility is assumed by Richtek or its subsidiaries for its use; nor for any infringements of patents or other rights of third

parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Richtek or its subsidiaries.

Outline Dimension

A

B

J

F

H

M

C

D

I

Y

X

EXPOSED THERMAL PAD

(Bottom of Package)

8-Lead SOP (Exposed Pad) Plastic Package

Dimensions In Millimeters

Dimensions In Inches

Symbol

Min

Max

Min

Max

A

4.801

5.004

0.189

0.197

B

3.810

4.000

0.150

0.157

C

1.346

1.753

0.053

0.069

D

0.330

0.510

0.013

0.020

F

1.194

1.346

0.047

0.053

H

0.170

0.254

0.007

0.010

I

0.000

0.152

0.000

0.006

J

5.791

6.200

0.228

0.244

M

0.406

1.270

0.016

0.050

X

2.000

2.300

0.079

0.091

Option 1

Y

2.000

2.300

0.079

0.091

X

2.100

2.500

0.083

0.098

Option 2

Y

3.000

3.500

0.118

0.138