LT3593 查看數據表（PDF） - Linear Technology

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LT3593

1MHz White LED Driver with Output Disconnect and One Pin Current Programming

Linear Technology 

LT3593

APPLICATIONS INFORMATION

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

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.

VIN

CTRL

GND

L1

C1

1

6

D1

2

7

5

3

4

C2

L1

D1

4

5

6

C2

VIN

3

C1

2

1

CTRL

GND

3593 F07

DFN Package

TSOT-23 Package

Figure 7. Recommended Component Placement

3593f

10

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