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LM2773 - Step-Down Regulator

General Description

The LM2773 is a switched capacitor step-down regulator that produces a selectable 1.8V or 1.6V output.

It is capable of supplying loads up to 300mA.

The LM2773 operates with an input voltage from 2.5V to 5.5V, accommodating 1-cell Li-Ion batteries and chargers.

Key Features

  • 1.
  • 2 Low-Noise Spread Spectrum Operation.
  • 1.8V/1.6V Selectable Output Voltage.
  • 2% Output Voltage Regulation.
  • > 75% Efficiency in 1.8V Mode.
  • Very Low Output Ripple: 10mV @ 300mA.
  • Output Currents up to 300mA.
  • 2.5V to 5.5V Input Voltage Range.
  • Shutdown Disconnects Load from VIN.
  • 1.15MHz Switching Frequency.
  • No Inductors…Small Solution Size.
  • Short Circuit and Thermal Protection.
  • 0.5mm pitch, DS.

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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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LM2773 www.ti.com SNVS554A – JANUARY 2008 – REVISED MAY 2013 LM2773 Low-Ripple 1.8V/1.6V Spread-Spectrum Switched Capacitor Step-Down Regulator Check for Samples: LM2773 FEATURES 1 •2 Low-Noise Spread Spectrum Operation • 1.8V/1.6V Selectable Output Voltage • 2% Output Voltage Regulation • > 75% Efficiency in 1.8V Mode • Very Low Output Ripple: 10mV @ 300mA • Output Currents up to 300mA • 2.5V to 5.5V Input Voltage Range • Shutdown Disconnects Load from VIN • 1.15MHz Switching Frequency • No Inductors…Small Solution Size • Short Circuit and Thermal Protection • 0.5mm pitch, DSBGA-9 (1.511 × 1.511mm × 0.6mm) DESCRIPTION The LM2773 is a switched capacitor step-down regulator that produces a selectable 1.8V or 1.6V output. It is capable of supplying loads up to 300mA.