Renesas Electronics RAA489255 Battery Front End is a low-cost 3- to 5-cell battery monitor that measures voltage/temperature and communicates this to an MCU for battery management. The device includes a current monitor and a 5-pin LED driver direct from the battery voltage to enable a low-cost state-of-charge display. The hot-plug tolerant Renesas RAA489255 also features 100mV current wake-up detection and open cell/wire detection.
