For one of my ESP8266 project, I need to bring down 12V to 3.3V. My plan is to use LM 1117 for the same. My maximum power draw can be 215 mA, I believe this will equate to 1.8 watt ((12-3.3)*.215 = 1.8705). My question is which chart on the datasheet tell me whether I need heat sink or not for this requirement? From the internet I found that it can operate without heatsink up to 2 watt.. but I would like to know how to determine this from the data sheet. Thanks in advance!
Link to DataSheet: http://www.ti.com/lit/ds/symlink/lm1117.pdf