cat6243 ON Semiconductor, cat6243 Datasheet - Page 11

• Manufacturer Part Number: cat6243
• Description: 1 Amp Adjustable Cmos Ldo Voltage Regulator
• Manufacturer: ON Semiconductor

Design Hints
wide as possible. When the impedance of these traces is high
due to narrow trace width or long length, there is a chance
to pick up noise or cause the regulator to malfunction. Place
V
IN
and GND printed circuit board traces should be as
300
250
200
150
100
50
0
0
Figure 19. Thermal Resistance vs. PCB Copper Area for 3 mm x 3 mm WDFN Package
25
50
Figure 20. Topside Copper Foil Pattern for Heat Dissipation
75
100
Close−up of pad area
125
Copper heat spreading area (mm
150
connections to heat spreading plane
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PCB Layout Top Layer and
175
11
200
external components, especially the input and output
capacitors, as close as possible to the CAT6243, and keep
traces between power source and load as short as possible.
225
2
1 oz C.F
2 oz C.F
1 oz Sim
2 oz Sim
250
)
275
300
650