Why do we require LED drivers for white LEDs?

[sudhir258]

PLEASE TELL ME THAT WHY WE REQUIRE A LED DRIVER FOR WHITE LEDS, AS IF RED, GREEN ,BLUE, YELLOW LEDS DOES NOT REQUIRE ANY DRIVING CIRCUIT

 

[dunn]

Re: WHITE LED DRIVERS

PLEASE TELL ME THAT WHY WE REQUIRE A LED DRIVER FOR WHITE LEDS, AS IF RED, GREEN ,BLUE, YELLOW LEDS DOES NOT REQUIRE ANY DRIVING CIRCUIT

Not all LEDs requier a drive circuit because of the current they require.

It also depends on the circuit in the first place (if the component that is driving the LED can supply fnough current then a Drive Circuit is not required).

Hope that this was helpfull.

 

[liuyonggen_1]

Re: WHITE LED DRIVERS

depend on your applications, that is, depend on the power.

 

[Jepeto]

Re: WHITE LED DRIVERS

White LEDs have high voltage drop – the RGB LEDs connected in series to get white color
3.3v logic power supply or 3.7v battery powered devices cannot drive white LEDs
the LED driver usually include voltage booster and current control to keep the LED brightness constant when the battery voltage drops

 

[ashad]

Re: WHITE LED DRIVERS

for red led around 1.2v required .... but for the white led around 3.2v required that is why it is required

 

[mitgrace]

Re: WHITE LED DRIVERS

Deal all :

Does anyone have the White LED marketing or technique paper ? I will join this market , I want to fast know the topic , Thanks