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LM3203

Part Number	LM3203
Manufacturer	National Semiconductor
Description	Step-Down DC-DC Converter
Published	Apr 27, 2010
Detailed Description	July 2005 com LM3203 Step-Down DC-DC Converter with Bypass Mode for CDMA / WCDMA RF Power Amplifiers L...
Datasheet	LM3203 PDF File

Overview

...M3203 Step-Down DC-DC Converter with Bypass Mode for CDMA / WCDMA RF Power Amplifiers General Description The LM3203 is a DC-DC converter optimized for powering 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 of 2.
7V to 5.
5V to an adjustable output voltage of 0.
8V to 3.
6V.
The output voltage is set using a VCON analog input and external resistor dividers for optimizing efficiency of the RF PA at various power levels.
The LM3203 offers 3 modes for mobile phones and similar RF PA applications.
Fixed-frequency PWM mode minimizes RF interference.
Bypass mode turns on an internal bypass switch to power ...

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