Rainbow-electronics MAX1839 Manuel d'utilisateur télécharger pdf (Page 6)

MAX1739/MAX1839

†

Wide Brightness Range

CCFL Backlight Controllers

6 _______________________________________________________________________________________

Typical Operating Characteristics

= 12V, V

CTL

= V

CRF

, V

MINDAC

= 1V, MODE = GND, Circuit of Figure 8.)

4µs/div

WIDE INPUT RANGE

BATT

= 8V)

CSAV

500mV/div

CTAP

5V/div

20V/div

MAX1739/1839 toc01

4µs/div

WIDE INPUT RANGE

BATT

= 20V)

CSAV

500mV/div

CTAP

5V/div

20V/div

MAX1739/1839 toc02

100µs/div

CCI

CCV

WIDE INPUT RANGE

BATT

= 8V, DPWM = 9%, V

CTL

= 0)

CSAV

500mV/div

CTAP

10V/div

CCV,

CCI

200mV/div

1.2V

MAX1739/1839 toc03

100µs/div

CCI

CCV

WIDE INPUT RANGE

BATT

= 20V, DPWM = 9%, V

CTL

= 0)

CSAV

500mV/div

CTAP

10V/div

CCV

CCI

200mV/div

1.2V

MAX1739/1839 toc04

20µs/div

FEED-FORWARD COMPENSATION

CTAP

5mV/div

20V

10V

CSAV

500mV/div

20V/div

MAX1739/1839 toc05

4µs/div

SWITCHING WAVEFORMS

CSAV

500mV/div

CTAP

10V/div

20V/div

5V/div

MAX1739/1839 toc08

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

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Rainbow-electronics MAX1839 Manuel d'utilisateur Page 6

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