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LM3279 - Buck-Boost Converter

General Description

The LM3279 is a buck-boost DC/DC converter designed to generate output voltages above or below a given input voltage and is particularly suitable for Power Amplifiers operating from single-cell Li-Ion batteries in portable applications.

Key Features

  • 1 MIPI® RFFE Digital Control Interface.
  • High-Efficiency PFM and PWM Modes with Internal Seamless Transition.
  • Operates from a Single Li-Ion Cell: 2.7 V to 5.5 V.
  • Adjustable Output Voltage:.
  • RFFE Digital Control: 0.4 V to 4.2 V.
  • Analog Control: 0.5 V to 4.2 V.
  • 1-A Maximum Load Capability for VBATT ≥ 3.2 V, VOUT = 3.6 V.
  • 2.4-MHz (typ. ) Switching Frequency.
  • Seamless Buck-Boost Mode Transition.
  • Fast Output Volta.

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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.

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Product Folder Sample & Buy Technical Documents Tools & Software Support & Community LM3279 SNVS970C – MARCH 2013 – REVISED OCTOBER 2014 LM3279 Buck-Boost Converter With MIPI® RFFE Interface for 3G And 4G RF Power Amplifiers 1 Features •1 MIPI® RFFE Digital Control Interface • High-Efficiency PFM and PWM Modes with Internal Seamless Transition • Operates from a Single Li-Ion Cell: 2.7 V to 5.5 V • Adjustable Output Voltage: – RFFE Digital Control: 0.4 V to 4.2 V – Analog Control: 0.5 V to 4.2 V • 1-A Maximum Load Capability for VBATT ≥ 3.2 V, VOUT = 3.6 V • 2.4-MHz (typ.) Switching Frequency • Seamless Buck-Boost Mode Transition • Fast Output Voltage Transition: 0.8 V to 4 V in 20 µs • High-Efficiency: 95% typ. at VBATT = 3.7 V, VOUT = 3.