AAT4280
Slew Rate Controlled Load Switch
Printed Circuit Board Layout
Recommendations
Evaluation Board Layout
The AAT4280 evaluation layout follows the printed
circuit board layout recommendations, and can be
used for good applications layout. Refer to Figures 1
through 3.
For proper thermal management and to take
advantage of the low RDS(ON) of the AAT4280, a few
circuit board layout rules should be followed: VIN
and VOUT should be routed using wider than normal
traces, and GND should be connected to a ground
plane. To maximize package thermal dispation and
power handling capacity of the AAT4280 SOT23-6/
SC70JW-8 package, the ground plane area con-
nected to the ground pins should be made as large
as possible. For best performance, CIN and COUT
should be placed close to the package pins.
Note: Board layout shown is not to scale.
Figure 1: Evaluation Board
Top Side Silk Screen Layout /
Assembly Drawing.
Figure 2: Evaluation Board
Component Side Layout.
Figure 3: Evaluation Board
Solder Side Layout.
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4280.2006.11.1.4
AAT [ ADVANCED ANALOG TECHNOLOGY, INC. ]
