LM3243 Datasheet (Texas Instruments) - Step-Down DC-DC Converter

LM3243, Step-Down DC-DC Converter

The LM3243 is a DC-DC converter optimized for powering multi-mode 2G, 3G, and 4G RF power amplifiers (PAs) from a single Lithium-Ion cell.

The LM3243 steps down an input voltage from 2.7 V to 5.5 V to a dynamically adjustable output voltage of 0.4 V to 3.6 V.

The output voltage is set through a VCON

LM3243 Features

* 1 Input Voltage Range: 2.7 V to 5.5 V

* High-Efficiency PFM and PWM Modes With Internal Synchronous Rectification

* Analog Bypass Function with Low Dropout Resistance (45 mΩ Typical)

* Dynamically Adjustable Output Voltage: 0.4 V to 3.6 V (Typical) in PFM and PWM Mod