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AP1539 Datasheet(PDF) 10 Page - Diodes Incorporated

Part # AP1539
Description  18V 4A 300KHz BUCK CONVERTER
PDF  13 Pages
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Manufacturer  DIODES [Diodes Incorporated]
Direct Link  http://www.diodes.com
Logo DIODES - Diodes Incorporated

AP1539 Datasheet(HTML) 10 Page - Diodes Incorporated

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AP1539
18V 4A 300KHz BUCK CONVERTER
AP1539 Rev. 4
10 of 13
OCTOBER 2009
DS31477
www.diodes.com
© Diodes Incorporated
Top Side Layout Guide
Bottom Side Layout Guide
Functional Description
(Continued)
Use vias to conduct the heat into the backside of
PCB layer. The heat sink at output (SW) pins should
be allowed for maximum solder-painted area.
Keep the gap of exposed pads from short circuit.
Recommended exposed-pads gap: 30~40mil
(0.75~1mm)
Brown: IC exposed pads.
Red: recommended layout.
Reference pads layout dimension:
Output: 90 x 50 mil
Vss: 90 x 60 mil



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