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IndiJones
Joined: 13 Aug 2001
Posts: 157
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 24 Jan 2003 5:34 Need an LED Driver Circuit |
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| I need to drive an array of 100 (10X10) Blue LEDs and 100 (10X10) Green LEDs at the same time and the LEDs will be lit until the power is turned off. All the LEDs are from Nichia (NSPB300 & NSPG510). I need a driver circuit for this. Thanks in advance!
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drwho78
Joined: 01 Jan 1970
Posts: 214
Helped: 7
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| 24 Jan 2003 6:10 |
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| If you just want the LEDs to be on when the power is on and off when the power is off, then you don't need a driver circuit. Assuming 1mA per LED, you will need 2A of power to light the 200 LEDs. You can connect a resistor to the anode of the LED and ground the other end of the LED. If you use 5V power, you will need 5K resistor per LED. You can also use one resistor to power all the LEDs. But you will need a 2.5 Ohm 10W resistor.
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Gomez
Joined: 12 Feb 2002
Posts: 107
Helped: 4
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| 28 Jan 2003 7:44 |
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Go to http://www.mblock.com.tw/pro/16-bit.html .
That's a good LED-driver with very low price 0,68USD/1000pcs.
Allegro has a LED-driver http://www.allegromicro.com/sf/6276/ 1,45USD/1000pcs.
The mblock Inc has a version with SSOP.
Gomez
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