Approaching noiselessness with the LT3045

[ginetto61]

Hello Friends;
My LT3045 Projects are ready for use. They tested. (I will share FFT measurments) ...

Hi thank you for the very interesting thread Could you provide some info/details on your noise measurement rig ?
to measure noise this low is a real challenge Thanks a lot

 

[Anode]

Hi all, somebody can help me to identify this LDO regulator ?

Thanks by advance

Ano

 

[sercan85]

they are lt3045. ı have the same package and written lhbrb 396 220

 

[Anode]

Hi and many thanks for your reply, I suspected it a little but I actually have LT3045 but with a different screen printing (LGYP134246) why do manufacturers use different code?

Thanks for your help, did you use this LT3045 ? I would tu use with a transistor for increase the current.

Best

 

[sercan85]

Yes i use lt3045 and 3094 on my amplifer. Amplifier power is 43vdc so i use 18volt transistor and zener after lt30xx set to 15V. I will share my amp on diyaudio very soon. My design is a much better alternative than Lm3886.

 

[Anode]

Thanks for your reply very nice works bravo when tell your amplifier is 43VDC you speak about voltage or Power ?

Best and thanks

 

[sercan85]

amplifier has 2x30vac 150va transformer.. After bridge i read +42vdc -42vdc… lt3045 has max 20v input. So i need to down 18v for lt3045 input…

 

[Anode]

Ah ok i see you put 2 LT3045 in serial for get 30VDC ?

 

[Anode]

Oh sorry ma bad ! I didn't completely read your reply 🙁

 

[sercan85]

"I placed the LT3045 and 3094 regulators in a PCB using 7815 and 7915 packages. Since the input voltage of the regulator is higher than 20 volts, I used a pre-regulator of -18 and +18 volts. The output of the LT3045 and 3094 is 15V."

 

[Anode]

Ok I see many thanks to your reply, I need to have 24VDC with the LT3045 I will test with 2 modules in serials, did you already test this configuration ?

 

[sercan85]

i havent tested it. but ı prefer to tps7axxxx seres for this voltages....

 

[Anode]

Hi Sercam, thanks for your reply, when you told you already tested, what's your opinion ?

Best

 

[sercan85]

I tested only lt3045 +15 lt3097-17v for my amp. Other regulators use both lt3045 for symmetric output (-15, +15)

 

[Anode]

Hi all someone can help me to identify this components ?

Thanks by advance

 

[ZhiGuo]

Do you have a 5V kit for sale? How much?

 

[zoom777]

https://www.ebay.com/usr/epicurusdiyaudio

 

[sercan85]

Do you have a 5V kit for sale? How much?

I sell kit and pcb(with heatsink) pcb could be cheaper for you if you solder Lt3045… Because i buy all
Components at mouser and it is little
Expensive… but if you want still fully populated pcb, i can offer you price for your voltage to 500mA or 1A.

 

[sercan85]

Noise measurements for 5A 5V LT3045 and transistor design published.

 

[zoom777]

View attachment 1169591

@sercan85 can you direct me to the source for such heatsink?