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ADM8843 Fiches technique(PDF) 2 Page - Analog Devices |
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ADM8843 Fiches technique(HTML) 2 Page - Analog Devices |
2 / 16 page ADM8843 Rev. 0 | Page 2 of 16 TABLE OF CONTENTS Specifications......................................................................................3 Absolute Maximum Ratings.............................................................4 Thermal Characteristics .............................................................. 4 ESD Caution.................................................................................. 4 Pin Configuration and Function Descriptions..............................5 Typical Performance Characteristics ..............................................6 Theory of Operation .........................................................................9 Automatic Gain Control............................................................ 10 Brightness Control with a Digital PWM Signal ..................... 10 LED Brightness Control Using a PWM Signal Applied to VPWM ............................................................................................. 12 LED Brightness Control Using a DC Voltage Applied to VBRIGHT .......................................................................................... 12 Applications......................................................................................13 Layout Considerations and Noise ............................................ 13 White LED Shorting .................................................................. 13 Driving Four LEDs in the Main Display Only ....................... 13 Driving Fewer than Four LEDs ................................................ 13 Using Smaller Capacitor Values ............................................... 14 Power Efficiency ......................................................................... 15 Outline Dimensions ........................................................................16 Ordering Guide .......................................................................... 16 REVISION HISTORY 10/04—Revision 0: Initial Version |
Numéro de pièce similaire - ADM8843 |
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Description similaire - ADM8843 |
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