Sorry for the late reply,

Yes, I am using a LF series 628 in my application. My application works on 6V and I have a LDO for 4.5V to the PIC. I am building a Smart sensor for Crane Safety (which is battery Operate) and requires a HPWM output and a LO BAT Voltage Indication.

Melanie's excellent tutorial, helps me think in this direction more positively. Initially I planned to use a 16F676 and use the onboard ADC. but the software PWM gave me a problem. The Only next option was to use the LF628 with onboard comparators.

I have gots some excellent advise (as I always have) to try it out and see what suits me the most.

So now I can experiment with all your advice and post my results on it.

regards