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LM3280 - Adjustable Step-Down DC-DC Converter

Description

The LM3280 is a multi-functional Power Management Unit, optimized for low-power handheld applications such as Cellular Phones.

The LM3280 incorporates three low-dropout LDO voltage regulators and one step down PWM DC-DC converter with an internal Bypass FET.

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) DC- DC.
  • High-Efficiency Synchronous Buck Converter.
  • 300mA Maximum Load Capability (PWM Mode).
  • 500mA Maximum Load Capability (Bypass mode).
  • PWM, Forced and Automatic Bypass Mode.
  • 3 Low-Dropout and Fast Transient Response LDOs.
  • 16-pin DSBGA Package.
  • Current Overload Protection.

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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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LM3280 www.ti.com SNOSAU4B – OCTOBER 2006 – REVISED FEBRUARY 2013 LM3280 Adjustable Step-Down DC-DC Converter and 3 LDOs for RF Power Management Check for Samples: LM3280 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) DC- DC • High-Efficiency Synchronous Buck Converter • 300mA Maximum Load Capability (PWM Mode) • 500mA Maximum Load Capability (Bypass mode) • PWM, Forced and Automatic Bypass Mode • 3 Low-Dropout and Fast Transient Response LDOs • 16-pin DSBGA Package • Current Overload Protection • Thermal Overload Protection DESCRIPTION The LM3280 is a multi-functional Power Management Unit, optimized for low-power handheld applications such as Cellular Phones.
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