LM3641 Datasheet (National Semiconductor) - Lithium-Ion Battery Pack Protection Circuit

LM3641, Lithium-Ion Battery Pack Protection Circuit

The LM3641 Lithium Protection Integrated Circuit resides inside a 3.6V Lithium-Ion battery pack consisting of a single cell or multiple parallel cells.

The IC controls the ON/OFF state of a pair of low threshold N-channel power MOSFETs placed in series with the battery cell(s).

The purpose of this M

LM3641 Features

* n Automatic battery disconnect when the cell is over-charged or over-discharged. n Maximum cell voltage for MOSFET conduction is factory programmable between 4.0V and 4.4V with a ± 25 mV tolerance (0˚C to +60˚C). n Minimum cell voltage for MOSFET conduction = 0.57

* VMAX ± 3.5% (0˚C to +60˚C