electronics - Power supply to custom led backlight -

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i programmer not electronic technician therefore:

i using power supply:

thermaltake tr2 w0070 430w atx12v v2.3 power supply

to power 13 leds in parallel. on supply, there 3.3v, 22a connector in want bypass , power leds. these white leds following necessary specs:

forward current: 20 ma max peak forward current: 30 ma max suggested using current: 16-18 ma

forward voltage: 3.2 min 3.4 max

i understand voltage somewhat. however, might calculating wrong or something. either way might stupid question,

wouldn't need large resistor withhold remaining current not being used leds? size/value resistor if do? calculations under single ohm resistor, doing wrong?

the current value on power supply max. current can drawn power supply. power supply provide needed current only. important thing don't exceed current. (and don't provide more voltage needed loads).

so, no need resistor way mentioned it.


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