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ML0308 Scheda tecnica(PDF) 3 Page - Minilogic Device Corporation Limited |
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ML0308 Scheda tecnica(HTML) 3 Page - Minilogic Device Corporation Limited |
3 / 9 page ML0308 Preliminary ______________________________________________________________________________________________________ 3/9 Rev. B, July 2005 PIN FUNCTION DESCRIPTION Pin Description LX (Pin 1) Switch Pin. This is the drain of the internal power MOSFET. Minimize the metal trace area connected to this pin to minimize EMI. GND (Pin 2) Ground. Tie this pin directly to the local ground plane. FB (Pin 3) Feedback Pin. Set the output voltage by selecting values for R1 and R2: V R R R VOUT 198 . 0 2 2 1 × + = (ML0308A) or V R R R VOUT 23 . 1 2 2 1 × + = (ML0308B) CE (Pin 4) This pin is the chip-enable Pin. Ground this pin to shutdown the chip. Apply a clock with different duty ratio to control brightness of the LEDs. VIN (Pin 5) The external voltage supply is connected to this pin. A high quality reservoir capacitor must be connected across pin 5 and pin 2 (ground) to achieve the specified output voltage parameters. A 4.7uF/6.3 V, low ESR capacitor must be connected as close as possible across pin 5 and pin 2 (ground). BLOCK DIAGRAM – ML0308A |
Codice articolo simile - ML0308 |
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Descrizione simile - ML0308 |
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