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LTC3406A - 600mA Synchronous Step-Down Regulator

General Description

The LTC®3406A is a high efficiency monolithic synchronous buck regulator using a constant frequency, current mode architecture.

Supply current during operation is only 20μA, dropping to ≤1μA in shutdown.

Key Features

  • High Efficiency: Up to 96%.
  • Very Low Quiescent Current: Only 20µA.
  • Low Output Ripple Voltage During Burst Mode® Operation.
  • 600mA Output Current.
  • 2.5V to 5.5V Input Voltage Range.
  • 1.5MHz Constant Frequency Operation.
  • No Schottky Diode Required.
  • Low Dropout Operation: 100% Duty Cycle.
  • ±2% 0.6V Reference.
  • Shutdown Mode Draw ≤1µA Supply Current.
  • Internal Soft-Start Limits Inrush Current.
  • Current Mode Operation for Excellent Line and Load Tr.

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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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FEATURES ■ High Efficiency: Up to 96% ■ Very Low Quiescent Current: Only 20µA ■ Low Output Ripple Voltage During Burst Mode® Operation ■ 600mA Output Current ■ 2.5V to 5.5V Input Voltage Range ■ 1.5MHz Constant Frequency Operation ■ No Schottky Diode Required ■ Low Dropout Operation: 100% Duty Cycle ■ ±2% 0.6V Reference ■ Shutdown Mode Draw ≤1µA Supply Current ■ Internal Soft-Start Limits Inrush Current ■ Current Mode Operation for Excellent Line and Load Transient Response ■ Overtemperature Protected ■ Low Profile (1mm) ThinSOTTM Package APPLICATIONS ■ Cellular Telephones ■ Wireless and DSL Modems ■ Digital Still Cameras ■ Media Players ■ Portable Instruments ■ Point of Load Regulation TYPICAL APPLICATION 2.2μH VIN VIN SW 4.