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Current Source for LEDs

Power Up to 100 LEDs with Constant Current

Current Source for LEDs
Current Source for LEDs
Need to power a bunch of lighting LEDs? You’re probably thinking: "That’s easy. Wire LEDs plus series resistors... job done!" While this offers a basic solution, what we have here is a neat, deluxe version to provide extremely accurate and stable current for up to 100 white LEDs.

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Materials

Component list

Component List

Resistors

(SMD 1206, 1%)

R1...R10 = 15 Ω *

R11..R20 = 30 k *

 

Capacitor

C1 = 10 µ / 50 V, multilayer, SMD 1210 *

 

Semiconductors

IC1 to IC10 = LT3092IST#PBF *

 

Miscellaneous

J1 to J10 = PCB connector 2-way 1/10” pin spacing (SL-MTA)

J11 = PCB mounted Barrel socket for mains adapter input

Mains Adapter unit providing 5, 12, 24 or 36 V *

 

* See Text

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