LM3253 Datasheet (Texas Instruments) - High-Current Step-Down Converter

LM3253, High-Current Step-Down Converter

The LM3253 is a DC-DC converter optimized for powering multi-mode 2G/3G/4G RF power amplifiers (PAs) from a single Lithium-Ion cell.

The LM3253 steps down an input voltage from 2.7V to 5.5V to a dynamically adjustable output voltage of 0.4V to 3.6V.

The output voltage is set through a VCON analog in

LM3253 Features

* 1

* 2 High-Efficiency PFM and PWM Modes with Internal Synchronous Rectification

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

* Dynamically Adjustable Output Voltage, 0.4V to 3.6V (typ.), in PFM and PWM modes

* 3A Maximum Load Current in PWM Mode