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LM3203 Step-Down DC-DC Converter

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Description

LM3203 www.ti.com SNVS355D * MAY 2005 * REVISED APRIL 2013 LM3203 Step-Down DC-DC Converter with Bypass Mode for CDMA / WCDMA RF Po.
The LM3203 is a DC-DC converter optimized for powering RF power amplifiers (PAs) from a single Lithium-Ion cell.

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Features

* 1
* 2 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. )

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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