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LX1995 Datasheet(PDF) 5 Page - Microsemi Corporation |
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LX1995 Datasheet(HTML) 5 Page - Microsemi Corporation |
5 / 8 page LX1995 EVALUATION GUIDE Microsemi Integrated Products 11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570 Page 5 Copyright © 2004 Rev. 1.0, 2004-08-13 LX1995 EVALUATION HOOK UP The following is a demonstration scenario that can be used to evaluate the LX1995: Directions for hook up (DC dimming mode): 1. Install jumper JU1. 2. Connect a 3.6V typical 1A power source between VIN and GND terminals. 3. Apply a 1.5V DC signal to the DC_ADJ terminal. Signal GND can be referenced to GND2 for convenience. 4. Vary the DC signal from 0V to 3V and observe the LEDs dimming. (Measure LED current from LED4 cathode to GND2 if desired. I = V / 15. VIN D1 (800) 877-6458 LX1995 MINIATURE LED DRIVER EVALUATION BOARD GND L1 U1 /SHDN LED1 LED3 LED2 LED4 + - 3.6V + - 0V to 3V DC DIMMER POWER ( DIMMING OPTION 1) PWM 3.3V 0V ( DIMMING OPTION 2) >5KHz PWM ( DIMMING OPTION 3) <1KHz 3.3V 0V Figure 2 – Typical Hook Up for the LX1995 Eval Board |
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