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LM3203 - Step-Down DC-DC Converter

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.

Key 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. ).
  • High Efficiency (96% typ. at 3.6VIN, 3.2VOUT at 150mA).
  • Fast Turn-On Time When Enabled (50µs typ. ), 3GPP Compliant.
  • 10-Pin DSBGA Package.
  • Current Overload Protect.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
LM3203 www.ti.com SNVS355D – MAY 2005 – REVISED APRIL 2013 LM3203 Step-Down DC-DC Converter with Bypass Mode for CDMA / WCDMA RF Power Amplifiers Check for Samples: LM3203 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.) • High Efficiency (96% typ. at 3.6VIN, 3.2VOUT at 150mA) • Fast Turn-On Time When Enabled (50µs typ.), 3GPP Compliant • 10-Pin DSBGA Package • Current Overload Protection • Thermal Overload Protection DESCRIPTION The LM3203 is a DC-DC converter optimized for powering RF power amplifiers (PAs) from a single Lithium-Ion cell.