voltage regulator to use?

Other Hardware General Electronics
1

hi, I'm in project, leds, and I have a battery of 7v 4A, and
for these leds require a voltage of 5V and 4A,
that use voltage regulator to go down to 5v and not lose amperage 4A, and low drop?

2

Do you have a link to the LED datasheet? You probably need to build or buy a special LED power supply.

LEDs are current-driven.... you supply a known/controlled current and the voltage takes care of itself (as long as the power supply can attain the required voltage).

3

DVDdoug:
Do you have a link to the LED datasheet? You probably need to build or buy a special LED power supply.

LEDs are current-driven.... you supply a known/controlled current and the voltage takes care of itself (as long as the power supply can attain the required voltage).

http://www.ebay.com/itm/1X-18650-3-7V-5000mAH-Li-ion-Rechargeable-Battery-for-UltraFire-Flashlight-Torch-/310911540318?pt=US_Rechargeable_Batteries&hash=item4863c59c5e

are 64 rgb leds, 1 leds rgb 60mA*64=3.84A

4

So, it's not "simply" and LED. The datasheet says:

An intelligent controlled light source... integrated in a package with 5050 components.

Then, there's some conflicting information. The text says there is a 12V constant-current "part", but the charts say between 6 and 7V. In any case, I think your 7V battery supply will be fine without a regulator.

5

There is a voltage regulator, to the specifications mentioned?
then there is some risk in these leds rgb feed directly to 7v and 5A?

here, what kind of capacitor is?

6

here use

Power supply voltage + 5v

that use voltage regulator to go down to 5v and not lose amperage 4A, and low drop?