Patent ID: 8169190

Claim:
An integrated circuit for controlling a lithium ion battery which is electrically coupled to a plurality of lithium ion battery cells electrically coupled in series, comprising: a voltage detection circuit for detecting a voltage of each of the plurality of lithium ion battery cells; a signal input and output circuit for inputting and outputting a signal; a plurality of voltage detecting terminals which are electrically coupled to positive electrode sides and negative electrode sides of the plurality of lithium ion battery cells, respectively, the plurality of voltage detecting terminals applying terminal voltages of the plurality of lithium ion battery cells to the voltage detection circuit, respectively; a plurality of charging state adjustment terminals for adjusting charging states of the plurality of lithium ion battery cells, respectively; a signal input terminal for inputting the signal to the signal input and output circuit; and a signal output terminal for outputting the signal from the signal input and output circuit, wherein the plurality of voltage detecting terminals and the plurality of charging state adjustment terminals are disposed in a manner that the charging state adjustment terminal is disposed between the voltage detecting terminal electrically coupled to the positive electrode side of the lithium ion battery cell and the voltage detecting terminal electrically coupled to the negative electrode side of the lithium ion battery cell; and wherein the voltage detecting terminals and the charging state adjustment terminals are configured to be exposed to the outside of an IC package; and wherein the signal input terminal and the signal output terminal are disposed on a side opposite to a side where the voltage detecting terminals and the charging state adjustment terminals are disposed.