LM3218 Datasheet - National Semiconductor

LM3218 Step-Down DC-DC Converter

The LM3218 is a DC-DC converter with inductor which is optimized for powering RF power amplifiers (PAs) from a single Lithium-Ion cell. It steps down an input voltage in the range from 2.7V to 5.5V to an adjustable output voltage of 0.8V to 3.6V. Output voltage is set by using a VCON analog input to.

LM3218 Features

* Includes 2.6 µH Inductor in very small form factor (3mm x

* 2.5mm x 1.2mm) 2 MHz (typ.) PWM Switching Frequency Operates from a single Li-Ion cell (2.7V to 5.5V) Adjustable Output Voltage (0.8V to 3.6V) Fast Output Voltage Transient (0.8V to

LM3218_NationalSemiconductor.pdf