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LX1741 Datasheet(PDF) 5 Page - Microsemi Corporation |
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LX1741 Datasheet(HTML) 5 Page - Microsemi Corporation |
5 / 15 page Microsemi Integrated Products Division 11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570 Page 5 Copyright © 2000 Rev. 1.1b, 2005-03-03 LX1741 High Efficiency High Voltage Boost Controller PRODUCTION DATA SHEET I N T E GRA T ED PR ODUC T S APPLI CATI ON CI RCUITS ( C ON TINUE D ) Typical LCD Bias Applications (Cont) V BAT = (1.6V to 6.0V) ⎟⎟ ⎠ ⎞ ⎜⎜ ⎝ ⎛ + = 2 1 ADJ OUT R R 1 V V R 1 R 2 C 1 4.7µF C 2 * 1nF R CS 1kΩ L 1 * Optional Component used to reduce output voltage ripple. 47µH V ADJ = 0.9V to 1.5V + - LX1741 NDRV SHDN IN SRC GND FB CS ADJ Figure 3 – Dynamic Output Voltage Operation Via Analog Voltage Input LED Driver Application C 1 4.7µF R CS 1kΩ L 1 47µH 1206 Case Size R 3 63.4Ω V BAT = 1.6V to 6.0V ON OFF R 1 1ΜΩ R 2 59kΩ V F = 3.6V typ. I LED = 20mA to 0.25mA () ⎟⎟ ⎠ ⎞ ⎜⎜ ⎝ ⎛ ⎟ ⎠ ⎞ ⎜ ⎝ ⎛ + − ⎟ ⎠ ⎞ ⎜ ⎝ ⎛ = 2 1 2 F ADJ 3 LED R R R V 4 V R 1 I LX1741 NDRV SHDN IN SRC GND FB CS ADJ Figure 4 – LED Driver with Full-Range Dimming Via PWM Input Note The component values shown are only examples for a working system. Actual values will vary greatly depending on desired parameters, efficiency, and layout constraints. |
Similar Part No. - LX1741_05 |
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Similar Description - LX1741_05 |
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