The principal system architecture in a 3G handset shown here highlight its co

feel

<P>
The principal system architecture in a 3G handset shown here highlight its complexity</P>
<P><IMG src="http://i.cmpnet.com/commsdesign/2005/oct05/tifigure1.gif"></P>

feel

<P>TI's solution</P>
<P><IMG src="http://i.cmpnet.com/commsdesign/2005/oct05/tifigure2.gif"></P>
<P>This coulomb counter is integrated in the battery pack and communicates battery parameters to a host processor over an I2C communications interface.</P>
<P><IMG src="http://i.cmpnet.com/commsdesign/2005/oct05/tifigure3.gif"></P>
<P>To solve the battery current problem, this highly efficient dc/dc boost converter drives up to 700 mA into a white LED for a camera flash application</P>
<P><IMG src="http://i.cmpnet.com/commsdesign/2005/oct05/tifigure4.gif"></P>
<P>Shown is an ultra-small, high-accuracy dc/dc buck converter for up to 500-mA core current. It requires just one inductor and two small capacitors.</P>