lt3593 Linear Technology Corporation, lt3593 Datasheet - Page 10

• Manufacturer Part Number: lt3593
• Description: 1mhz White Led Driver With Output Disconnect And One Pin Current Programming
• Manufacturer: Linear Technology Corporation

APPLICATIONS INFORMATION
LT3593
Board Layout Considerations
As with all switching regulators, careful attention must
be paid to the PCB layout and component placement. To
prevent electromagnetic interference (EMI) problems,
proper layout of high frequency switching paths is essential.
Minimize the length and area of all traces connected to the
10
CTRL
GND
V
IN
C1
1
2
3
DFN Package
7
Figure 7. Recommended Component Placement
L1
C2
6
5
4
D1
Switching node pin (SW). Keep the sense voltage pins (CAP
and LED) away from the switching node. Place C2 next to
the CAP pin. Always use a ground plane under the switching
regulator to minimize interplane coupling. Recommended
component placement is shown in Figure 7.
D1
4
5
6
TSOT-23 Package
C2
L1
3
2
1
3593 F07
C1
V
CTRL
GND
IN
3593f