Thread: Lilliput cable controller just blew up, Please help me!!

Can you confirm that your Lilliput car adapter is really using the LM2595S-5.0 ? Mine uses the LM2575-ADJ. The LM2575 is a step-down (buck) switcher which takes the car's battery voltage (nomially 13.8V when the engine is running) and regulates it down to 12.0 V.

The component that you circled (with pins 1 and 2) is actually an inductor - it has no polarity. According to this, its most likely a 100 uH inductor.

The Lilliput car adaptor has a small problem - it needs a minimum input voltage of 13.8V to provide 12V regulated output. This is ok when the engine is running. When the engine is off, the battery voltage in my car drops to about 12.8V - the output voltage then drops to about 10.8V and causes a significant drop in the brightness of the backlight. I'm powering the Lilliput from the 12V from my Opus and this solves the problem.

Hello.
Thank you for reply.
Yes it is a LM2595S-5.0 circuit.
My car stop works at 13.8V and with engine it works at 15v. When I power the engine the voltage goes to +/-11V for am instant.
I will try to make a regulered circuit.
THANK YOU

are you trying to fix this thing, or are you just curious. If its broken, id buy a new/ better one. I dont trust the quality of lillyput so im not using there included adaptor, i bought a better one that has a switch to go from 9v to 12v out, that way i know its doing its job.