Urgent Help needed for mobile charger circuit

Thread Starter

Aldibaran

Joined Jun 30, 2009
3
I am currently doing a project on mobile chargers. I have actually done this circuit based on the circuit of a chinese product available in the market. As a result, i was not able to get the design or working from anywhere. Please do help me bcos my exams are tomorrow. I specially need help about the IC BBv7B. I think it is a step up IC. Do help me. If possible, help me with some datasheets also. I have provided the circuit as a attachment
 

R!f@@

Joined Apr 2, 2009
9,734
Ok tell me first, is this a working one or a drawing that you layed out by looking at a phone charger. The thing is that, that IC does not make any sense to me?
I need more input from you.

Rifaa
 

Thread Starter

Aldibaran

Joined Jun 30, 2009
3
Ya this is actually working... I drew the circuit diagram looking at the original circuit and i got the required output.
Actually this is a circuit based on a single 1.2 V battery. I think this IC converts this 1.2V into 5.7V, which is more than sufficient to charge the mobile phone.... Maybe this is the code name of some step up IC....
 

R!f@@

Joined Apr 2, 2009
9,734
Then it is a DC to DC converter. a step up one to be definite
Chinese ones a customized and data sheets are hard to come by for those things.. sorry
Rifaa
 
Top