I 'm now designing a charging board ,which is 2.1cm X 2.5cm. My charging current set on 800mA(In order to meet charging time requirement) .
when I charging a battery (voltage 3.5V), the IC surface temperature rise to above 65 degree C ,and the room temperature is 25 degree C.
the PCB is 0.8mm , Cu thickness is 65um.
Is there any method I can apply to inprove thermal performance .
or is there any suitable charging IC can have choose for better thermal performance based on my current board size.