rt9903b Richtek Technology Corporation, rt9903b Datasheet - Page 15

• Manufacturer Part Number: rt9903b
• Description: Channel Dc/dc Converters With High-efficiency Step-up
• Manufacturer: Richtek Technology Corporation

Outline Dimension
Richtek Technology Corporation
Headquarter
5F, No. 20, Taiyuen Street, Chupei City
Hsinchu, Taiwan, R.O.C.
Tel: [phone] Fax: [phone]
DS9903B-07 August 2007
A
D
Symbol
A1
A3
D2
E2
A
D
E
b
e
L
A1
E
A3
Dimensions In Millimeters
0.800
0.000
0.175
0.180
3.950
2.300
3.950
2.300
0.350
V-Type 24L QFN 4x4 Package
e
Min
0.500
D2
Preliminary
1.000
0.050
0.250
0.300
4.050
2.750
4.050
2.750
0.450
Max
b
1
Richtek Technology Corporation
Taipei Office (Marketing)
8F, No. 137, Lane 235, Paochiao Road, Hsintien City
Taipei County, Taiwan, R.O.C.
Tel: [phone] Fax: [phone]
Email: [e-mail]
SEE DETAIL A
Note : The configuration of the Pin #1 identifier is optional,
but must be located within the zone indicated.
E2
L
Dimensions In Inches
0.031
0.000
0.007
0.007
0.156
0.091
0.156
0.091
0.014
Min
0.020
Pin #1 ID and Tie Bar Mark Options
0.039
0.002
0.010
0.012
0.159
0.108
0.159
0.108
0.018
Max
DETAIL A
2
1
RT9903B
www.richtek.com
2
1
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