Waking up a DS2761／DS2762

The DS2761 and DS2762 High Precision Battery Monitors provide monitoring and protection for a Li+ cell. These devices have two power modes: Active and Sleep. While in Active Mode, the devices continually monitor the system and provide Li+ protection. While in Sleep Mode, these activities cease. There are several conditions that can transition the devices from Active Mode into Sleep Mode: a low DQ, an under voltage condition, and the issuing of the Swap command. There is another set of conditions that can transition the devices from Sleep Mode into Active Mode: a rising edge of DQ, a falling edge of PS, attaching a charger, and the issuing the Swap Command. The state of the PMOD bit, SWEN bit, DQ pin and battery voltage effect how the Charge Control (CC) and Discharge Control (DC) pins react when waking up. This Application Note will provide details of what happens in all possible waking up scenarios.