LTC4150 Coulomb Counter: Device fails getting very hot when I use a 5 Ohm Current sense resistor ????

LTC4150 Coulomb Counter: Device fails getting very hot when I use a 5 Ohm Current sense resistor ????

When I use a 0.05 Ohm sense resistor the LTC4150 works just fine.

Switch off & replace the 0.05 Ohm sense resistor with a  5 Ohm device (to give me 10mA full scale) circuit stops working & LTC4150 fails getting very hot ???

Tried several LTC4150 devices & they all work with 0.05 Ohm sense resistor, but fail the same way when 5 Ohm is subsequently fitted.

I am using +5v supply, with 1k Ohm load on the down stream side of the sense resistor.

Compared to something like the Texas Instruments INA219 Bidirectional Current/Power Monitor which has an impressive  –26v to 26v differential input tolerance the LTC4150 has a very poor comparative performance stated as –0.3V to VDD + 0.3v.

However, I cant see how I can violate the LTC4150 device limits in my circuit.

Is there a maximum value for the sense resistor?