The DS6101 series are protection ICs for rechargeable single-cell lithium ion ( Li + ) battery away from overcharge / discharge voltage or excessive load currents. It also includes a short-circuit protector to

prevent large external short-circuit currents.

These ICs are composed of two voltage detectors, reference cells, delay circuits, short circuit protectors, logic circuits and MOSFET switches.

When the charging voltage exceeds the detector threshold from a low value to a value higher than VDET1, the MOSFET switch is turned off. After detecting overcharge, when the VBAT voltage drops below the "VREL1" level, or when the charger is disconnected from the charger to VBAT, it can be reset and the MOSFET switch is turned on.

When the discharge voltage is below the detector threshold from a high value to another lower than VDET2, the MOSFET switch is turned off after an internal fixed delay time.

After the DS6101 series detects the over-discharge voltage, connect the charger to the battery pack, and when the battery power supply voltage is higher than the over-discharge detector threshold, the MOSFET switch is turned on.

After the internal fixed delay time accompanied by the built-in over-current detector, the over-load current can be sensed and cut off by the MOSFET switch being turned off.

Once the excess current is detected, it can be released by removing the battery pack from the load system and the MOSFET switch is turned on. In addition, the short-circuit protector will immediately turn off the MOSFET switch under the action of the external short-circuit current.