LM3203 Datasheet PDF (Step-Down DC-DC Converter) | Download National Semiconductor LM3203

LM3203 - Step-Down DC-DC Converter

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.

Features

n n n n n n n n n n n 2MHz (typ. ) PWM Switching Frequency Operates from a single Li-Ion cell (2.7V to 5.5V) Adjustable Output Voltage (0.8V to 3.6V) 500mA Maximum load capability (PWM and Bypass mode) PWM / Forced Bypass Mode Low RDSON Bypass FET: 85mΩ (typ. ) High Efficiency (96% typ. at 3.6VIN, 3.2VOUT at 150mA) Fast Turn-on time when Enabled (50µs typ. ), 3GPP Compliant 10-pin micro SMD Package Current Overload Protection Thermal Overload Protection.

Datasheet Details

Part number	LM3203
Manufacturer	National Semiconductor (now Texas Instruments)
File Size	1.36 MB
Description	Step-Down DC-DC Converter
Datasheet	LM3203 Datasheet
Additional preview pages of the LM3203 datasheet.

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Full PDF Text Transcription

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July 2005 www.DataSheet4U.com LM3203 Step-Down DC-DC Converter with Bypass Mode for CDMA / WCDMA RF Power Amplifiers LM3203 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.

Published: Apr 27, 2010 |