Rainbow-electronics MAX5971B Bedienungsanleitung PDF herunterladen (Seite 11)

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MAX5971B

Single-Port, 40W, IEEE 802.3af/at,

PSE Controller with I

Typical Operating Characteristics (continued)

= +25°C, unless otherwise noted.)

LED PWM TIMING: MINIMUM DUTY

CYCLE (DEFAULT)

MAX5971B toc24a

AGND - V

OUT

50V/div

AGND - V

LED

20V/div

OUT

500mA/div

OmA

10µs/div

LED PWM TIMING: MAXIMUM DUTY

CYCLE (PROGRAMMABLE)

MAX5971B toc24b

AGND - V

OUT

50V/div

AGND - V

LED

20V/div

OUT

500mA/div

OmA

10µs/div

LED OVERCURRENT FAULT WITH PWM DISABLED

MAX5971B toc23b

200ms/div

0mA

AGND

- V

OUT

50V/div

AGND

- V

LED

20V/div

OUT

500mA/div

LED OVERCURRENT FAULT WITH PWM ENABLED

MAX5971B toc23a

200ms/div

0mA

AGND

- V

OUT

50V/div

AGND

- V

LED

20V/div

OUT

500mA/div

LED DETECTION FAULT WITH PWM DISABLED

MAX5971B toc22b

200ms/div

0mA

AGND

- V

OUT

10V/div

AGND

- V

LED

20V/div

OUT

500mA/div

LED DETECTION FAULT WITH PWM ENABLED

MAX5971B toc22a

200ms/div

0mA

AGND

- V

OUT

10V/div

AGND

- V

LED

20V/div

OUT

500mA/div

STARTUP USING 2-EVENT CLASSIFICATION

WITH A VALID PD

MAX5971B toc21

100ms/div

0mA

AGND

- V

OUT

20V/div

OUT

100mA/div

1 2 ... 6 7 8 9 10 11 12 13 14 15 16 ... 45 46

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