The maximum output current of the Vcc regulator is 100mA, therefore for a 4.7Ω resistor the maximum power loss across would be 47mW. Any resistor with a power rating ~1.5 times greater than this value is acceptable.
The maximum output current of the Vcc regulator is 100mA, therefore for a 4.7Ω resistor the maximum power loss across would be 47mW. Any resistor with a power rating ~1.5 times greater than this value is acceptable.