Rainbow-electronics MAX17061 Instrukcja Użytkownika Pobierz pdf (Strona 8)

MAX17061

8-String White LED Driver with

SMBus for LCD Panel Applications

8 _______________________________________________________________________________________

Typical Operating Characteristics (continued)

(Circuit of Figure 1, V

= 12V, C

CCV

= 0.022µF, R

CCV

= 5.1kΩ, V

ISET

= V

OSC

= V

, R

FSET

= 464kΩ, V

PWMI

= GND, LEDs =

10 series x 4 parallel strings, T

= +25°C, unless otherwise noted.)

SWITCHING WAVEFORMS

= 7V, BRIGHTNESS = 100%)

MAX17061 toc08

1μs/div

20V/div

200mA/div

0mA

SWITCHING WAVEFORMS

= 20V, BRIGHTNESS = 100%)

MAX17061 toc09

1μs/div

20V/div

200mA/div

0mA

STARTUP WAVEFORMS

(BRIGHTNESS = 100%)

MAX17061 toc10

400μs/div

20V/div

1A/div

OUT

20V/div

CCV

2V/div

STARTUP WAVEFORMS

(SMBus = 0x04)

MAX17061 toc11

400μs/div

20V/div

1A/div

OUT

20V/div

CCV

2V/div

LED CURRENT WAVEFORMS

(SMBus = 0x80)

MAX17061 toc12

2ms/div

FB1

10V/div

500mA/div

LED

20mA/div

OUT

20V/div

0mA

LED CURRENT WAVEFORMS

(SMBus = 0x04)

MAX17061 toc13

2ms/div

FB1

10V/div

500mA/div

LED

20mA/div

OUT

20V/div

0mA

1 2 3 4 5 6 7 8 9 10 11 12 13 ... 25 26

MAX17061 1

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