For the cell phone to charge, charger output must be above 4V and can deliver a maximum current of 500mA. This charger circuit will step up the voltage from 1.5V to 5V DC to reach the cell phone ...

Here is an ideal mobile charger using 1.5 volt pen cells to charge mobile phone while traveling. It can replenish cell phone battery three or four times in places where AC power is not available.

Fig. 1 illustrates the V-I characteristic of a modern CC-CV integrated circuit (a MAX1737) used for a Li-ion battery charger. This type of IC is the component at the heart of all Li-ion battery ...

Texas Instruments bq25040 is a 1.1-A single-cell Li-Ion battery charger with integrated 50-mA regulator that offers 2.3-A production test support and high-voltage protection.

Can you leave chargers plugged in all the time? An expert explains - Most people have a phone charger plugged in next to ...