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LTC1772 - Constant Frequency Current Mode Step-Down DC/DC Controller

Features

  • High Efficiency: Up to 94%.
  • High Output Currents Easily Achieved.
  • Wide VIN Range: 2.5V to 9.8V.
  • Constant Frequency 550kHz Operation.
  • Burst Mode® Operation at Light Load.
  • Low Dropout: 100% Duty Cycle.
  • Tiny 6-Lead SOT-23 Package.
  • 0.8V Reference Allows Low Output Voltages.
  • Current Mode Operation for Excellent Line and Load Transient Response.
  • Low Quiescent Current: 270µA.
  • Shutdown Mode Draws Only 8µA Supply Current.
  • ±2.5% Reference Accura.

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Datasheet preview – LTC1772

Datasheet Details

Part number LTC1772
Manufacturer Linear Technology
File Size 144.61 KB
Description Constant Frequency Current Mode Step-Down DC/DC Controller
Datasheet download datasheet LTC1772 Datasheet
Additional preview pages of the LTC1772 datasheet.

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Full PDF Text Transcription

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U U LTC1772 Constant Frequency Current Mode Step-Down DC/DC Controller in SOT-23 FEATURES ■ High Efficiency: Up to 94% ■ High Output Currents Easily Achieved ■ Wide VIN Range: 2.5V to 9.8V ■ Constant Frequency 550kHz Operation ■ Burst Mode® Operation at Light Load ■ Low Dropout: 100% Duty Cycle ■ Tiny 6-Lead SOT-23 Package ■ 0.8V Reference Allows Low Output Voltages ■ Current Mode Operation for Excellent Line and Load Transient Response ■ Low Quiescent Current: 270µA ■ Shutdown Mode Draws Only 8µA Supply Current ■ ±2.5% Reference Accuracy U APPLICATIO S ■ One or Two Lithium-Ion-Powered Applications ■ Cellular Telephones ■ Wireless Modems ■ Portable Computers ■ Distributed 3.3V, 2.5V or 1.
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