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AS3490 Scheda tecnica(PDF) 7 Page - ams AG

Il numero della parte AS3490
Spiegazioni elettronici  Highly Efficient 2-6 LEDs Backlight Driver with PWM Input
PDF  19 Pages
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Produttore elettronici  AMSCO [ams AG]
Homepage  http://www.ams.com
Logo AMSCO - ams AG

AS3490 Scheda tecnica(HTML) 7 Page - ams AG

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AS3490
Datasheet - E l e c t r i c a l C h a r a c t e r i s t i c s
2. Note: It is not recommended to operate the current sources at minimum duty cycle with low LED currents.
3. The dcdc output voltage VOUT is regulated to 150mV above the maximum LED voltage (LED1...LED3) to guar-
antee proper operation of the current with output voltage ripple and undershoots (e.g. due to PWM or supply
voltage changes)
4. The short LED detection debounce time is longer than the open LED detection debounce time to allow the par-
asitic capacitance of the LED to charge above VLED_SHORT within this time and avoid wrong triggering of short
LED detection.



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