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LXM1614 Datasheet(PDF) 8 Page - Microsemi Corporation |
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LXM1614 Datasheet(HTML) 8 Page - Microsemi Corporation |
8 / 9 page 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 DUAL DIMMING, EXTENDED TEMPEERATURE CCFL INVERTER MODULE PRELIMINARY DATASHEET 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 - Brightness as a function of the BRITE control (CN1-7) 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 Lamp Current (mArms) 9 IBOOST 4 boost mode no boost mode control range 5.0 VIN = 9V Typical curve for 5.8” panel. Other panels may be different. – Maximum lamp current as a function of the Boost control (CN1-6) 85 °C 0 25 -40 9.0 5.5 4.0 Lamp Current (mArms) Temp 7.5 VIN = 9V Typical curve for 5.8” panel. Other panels may be different. – Maximum lamp current as a function of ambient temperature |
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