Solar charger LT3653

[kolines]

Solar charger LT3652 (Linear Technology)

Hello,
If anyone has experience with Integrated Linear Technology LT3652 from Linear Technology.
I've done a battery charger LT3652..
I wonder if it is normal so hot I checked with an infrared thermometer and reaches about 54℃. I wonder if it is normal. Although the data sheet provides as follows:
Operating junction: -40℃ to 125℃
Storage temperature range: -65℃ to 150℃

THX.

 

[chuckey]

As θJC = 3°C/W, the actual junction temperature will be 3 degrees per watt greater then the case and must be below 125 degrees. So providing it is dissipating less then (125-54)/3 ~ 23 watts you should be safe.
Frank