Microsemi

Linfinity Microelectronics Division

11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570

Page 8

Copyright

© 2000

Rev. 0.3b,2000-11-20

RangeMAX™

LXM1614-14-11

A

M I CROSEM I

COM P A N Y

   

     


 


WIDE RANGE DIMMING FUNCTION

Dimming can be controlled by a DC voltage (like a voltage

output DAC) or by a PWM signal (5V logic level PWM signal

from a micro controller). The PWM signal should be 400Hz to

4kHz, 0V to 5V, 0% to 100% duty cycle.

4.5 V

5.0 V

0.5 V

0.0 V

BRITE

Brightness

100%

1%

control range

AMPLITUDE BOOST FUNCTION

The Boost Function Control signal levels are the same as

the Dimming Control.

Less than 0.5V provides 4mA

maximum lamp current while 4.5V on Boost provides “max

boost” with a max lamp current of 9mA. Please note that

these maximum lamp current levels are protected by the on-

board thermister which limits the maximum lamp current

automatically as a function of temperature as seen in Figure

9.

4.5

0.5

0.0

9

IBOOST

4

boost mode

no boost mode

control range

5.0

Typical curve for 5.8” panel. Other

panels may be different.

(CN1-6)

85

°C

0

25

-40

9.0

5.5

4.0

Temp

7.5

Typical curve for 5.8” panel.

Other panels may be different.

temperature