Rainbow-electronics MAX1839 Bedienungsanleitung PDF herunterladen (Seite 7)

MAX1739/MAX1839

†

Wide Brightness Range

CCFL Backlight Controllers

_______________________________________________________________________________________ 7

Typical Operating Characteristics (continued)

= 12V, V

CTL

= V

CRF

, V

MINDAC

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

20ms/div

STARTUP

(ADC SOFT-START, MODE = GND)

CTAP

10V/div

BATT

CSAV

500mV/div

BATT

500mA/div

MAX1739/1839 toc09

12V

2ms/div

LAMP-OUT VOLTAGE LIMITING

SECONDARY

2kV/div

CTAP

5V/div

MAX1739/1839 toc10

1ms/div

SYNCHRONIZED DPWM

MODE

= 100kHz, V

CTL

= V

CRF

/2)

CSAV

500mV/div

CTAP

5V/div

20V/div

MAX1739/1839 toc07

1ms/div

SYNCHRONIZED DPWM

MODE

= 32kHz, V

CTL

= V

CRF

/2)

CSAV

500mV/div

CTAP

5V/div

20V/div

MAX1739/1839 toc06

400ms/div

LAMP-OUT VOLTAGE LIMITING

SECONDARY

2kV/div

CTAP

5V/div

MAX1739/1839 toc11

200

100

500

400

300

800

700

600

900

0105 152025

INPUT CURRENT vs.

INPUT VOLTAGE

MAX1739/1839 toc12

BATT

(V)

BATT

(mA)

SHUTDOWN CURRENT (µA)

SHUTDOWN

MINIMUM BRIGHTNESS

MAXIMUM BRIGHTNESS

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

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