LM3203 Step-Down DC-DC Converter

National Semiconductor

Description

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 Converte.
The LM3203 is a DC-DC converter optimized for powering RF power amplifiers (PAs) from a single Lithium-Ion cell.

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Datasheet Specifications

Part number: LM3203
Manufacturer: National Semiconductor
File Size: 1.36 MB
Datasheet: LM3203_NationalSemiconductor.pdf
Description: Step-Down DC-DC Converter

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, 3.2

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

LM3203 Distributors

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LM3203 Step-Down DC-DC Converter National Semiconductor

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