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STW41412/T Folha de dados(PDF) 23 Page - STMicroelectronics

Nome de Peças STW41412/T
Descrição Electrónicos  Single Coil Dual Output Step Down DC/DC Converter for Digital Base Band and Multimedia Processor Supply
PDF  27 Pages
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Fabricante Electrônico  STMICROELECTRONICS [STMicroelectronics]
Página de início  http://www.st.com
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STW41412/T Folha de dados(HTML) 23 Page - STMicroelectronics

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4 Application information
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4.7.2
TFBGA16 internal bumps access
Pad centers are at 500 µm distance. Pad diameter is 275 µm. The distance between two
adjacent pad edges is only 225 µm. We recommend a distance for lead-out signals from the
center of pad matrix by 75 µm wide trace. Isolation distance in this case is 75 µm (see
Figure 18 and Figure 19).
Figure 18. TFBGA16 ball pad spacing and track parameters to internal pads
Figure 19. PCB routing example using TFBGA16
Grid dot distance :
with
A = 500
µm
B = 275
µm
C = 75
µm



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