The LM3207 is a DC-DC converter optimized for powering WCDMA / CDMA RF power amplifiers (PAs) from a single Lithium-Ion cell; however they may be used in many other applications. It steps down an input voltage from 2.7V to 5.5V to a variable output voltage from 0.8V(typ.) to 3.6V(typ.). Output voltage is set using a VCON analog input for controlling power levels and efficiency of the RF PA. The LM3207 also provides a regulated reference voltage (Vref) required by linear RF power amplifiers through an integrated LDO that has a maximum Iref up to 10 mA. See Ordering Information table on page 2 for Voltage Options. The LM3207 is available in a 9-pin lead free micro SMD package. High switching frequency (2MHz) allows use of surfacemount components. Only four small external surface-mount components are required, an inductor and three ceramic capacitors.