Please help fnd datasheet for Seoul semiconductor DT3007B LED driver IC?

[treez]

Hello,
I cannot find it, does anyone know where it is?

 

[smijesh]

It is a 230V offline LED converter Seoul do not selling as IC but they selling as complete LED light product
See the circuit diagram
http://www.seoulsemicon.com/_upload/Goods_Spec/[SPEC]SMJL-3P22W4P3-Rev1.0.pdf

You may request the datasheet form Seoul by below link
http://www.seoulsemicon.com/en/html/technical/ledtech01.asp

 

[treez]

Thanks we tried that link, but we get no reply......

Hello
This app note (below) shows an offline LED driver IC called the DT3007B being used to drive LEDs.
Why can we not find the datasheet for the DT3007B anywhere on the internet?
Is there something wrong with the DT3007B?
The App note does not say who manufactures the DT3007B LED driver IC…..presumably its Seoul Semiconductor?
http://www.seoulsemicon.com/_upload/Goods_Spec/[SPEC]SMJQ-XC95W4PX_Rev1.0.pdf

 

[treez]

With the DT3001 m is there any reason that we cant feed the VP(+) input with CONSTANT 20vdc via a R/ZENER/BJT regulator from the HV DC Bus?

The VP+ input is only rated to 450V, so we dont want to connect it direct to the HV rail as it may suffer transient failure.

DT3001 datasheet
http://www.seoulsemicon.com/_upload/Goods_Spec/Acrich2-Applicationnote.pdf

 

[betwixt]

You seem to be expecting huge transients!

The data sheet doesn't specify how the 'stages' of current control are selected, it may be by monitoring the voltage across the Vin and VP pins in which case applying steady DC will stop the internal circuits working and you would have to rely on the dimming control to limit the LED current. VP is normally connected directly to the LED positive supply so if the drivers work by applying less than VP to enable the switching devices, you may find they are turned an all the time.

You need to experiment, what you propose is well outside the manufacturers design recommendations but might still work.

Brian.