LED6000PHR datasheet(32/49 Pages) STMICROELECTRONICS

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Application notes - step-down conversion

LED6000

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DocID027777 Rev 2

The exposed pad must be connected to the signal GND pin. The connection to the ground

plane must be achieved by taking care of the above mentioned input loop, in order to avoid

a high current flowing through the signal GND.

Refer to Section 5.6 for the LED6000 layout example.

5.6

Demonstration board

In this section the LED6000 step-down demonstration board is described.

The default settings are:



Input voltage up to 60 V



Programmed LED current 1 A (HB LEDs)



FSW = 500 kHz



VBIAS = GND

Figure 19. LED6000 demonstration board schematic (step-down)

Table 7. LED6000 demonstration board component list

Reference

Part

Package

Note

Manufacturer P/N

C1, C2

4.7

F

1210

X7S/100 V/10%

TDK C3225X7S2A475K

C3, C4

F

0805

X7S/100 V/10%

TDK C2012X7S2A105K

470 nF

1206

X7R/100 V/10%

TDK C3225X7R2A474M

C6, C8

N. M.

100 nF

0603

X7R/16 V/10%

2.2 nF

0603

X7R/25 V/10%

C10

1 nF

0603

X7R/16 V/10%

C11

220 pF

0603

NP0/50 V/5%

C12

100 pF

0603

100 V

C13

F

0805

X5R/16 V/20%

R1, R5

N. M.



0603

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