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LM3242 - Step-Down DC-DC Converter

General Description

The LM3242 is a DC-DC converter optimized for powering RF power amplifiers (PAs) from a single lithium-ion cell; however, it may be used in many other applications.

It steps down an input voltage from 2.7 V to 5.5 V to an adjustable output voltage from 0.4 V to 3.6 V.

Key Features

  • 1 2.7-V to 5.5-V Input Voltage Operating From Single Li-Ion Cell.
  • 6-MHz (typical) PWM Switching Frequency.
  • 0.4-V to 3.6-V Adjustable Output Voltage.
  • 750-mA Maximum Load Capability (up to 1 A in Bypass).
  • High Efficiency (95% typical at 3.9 VIN, 3.3 VOUT at 500 mA).
  • Automatic ECO/PWM/BP Mode Change.
  • Current Overload Protection.
  • Thermal Overload Protection.
  • Soft-Start Function.
  • Small Chip Inductor in 0805 (201.

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LM3241 Step-Down DC-DC Converter

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 LM3242 SNOSB48E – OCTOBER 2011 – REVISED AUGUST 2015 LM3242 6-MHz, 750-mA Miniature Adjustable Step-Down DC-DC Converter With Auto Bypass for RF Power Amplifiers 1 Features •1 2.7-V to 5.5-V Input Voltage Operating From Single Li-Ion Cell • 6-MHz (typical) PWM Switching Frequency • 0.4-V to 3.6-V Adjustable Output Voltage • 750-mA Maximum Load Capability (up to 1 A in Bypass) • High Efficiency (95% typical at 3.9 VIN, 3.