Hi,
I use this IC a lot.......you don't need any extra components......so from memory:-
- The battery connection and system load interface are two separate conections. Don't mix them about.
- RCSS is the incoming supply current measurement (allowing you to shutdown the circuit if it goes over your threshold), RCSB is the actual charge current measurement.
- Device runs from battery when charger unplugged.
- Charger plugged in will power the device AND charge the battery at the same time. You can monitor the charge status and control the charging from your connected uP.
- Via the uP you can disable charging completely if you want so that the charger powers the device and the batteries just sit there (with no load at all).
I use it in 4S mode.
Make sure you pay attention to the control side so that you can enable charging if the uP is switched off........I don't do this with mine though meaning I need the uP running to allow charging.....and I have my software monitor the charge current and the ability to shutdown the IC if something goes wrong.
PS. RS & Farnell state no-stock and a long delivery (last time I checked), but I buy mine direct from Maxim......plenty stock......go figure!
Ian.