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LTC3564 - Synchronous Step-Down Regulator

General Description

5-Lead Plastic TSOT-23 5-Lead Plastic TSOT-23 6-Lead (2mm × 3mm) Plastic DFN 6-Lead (2mm × 3mm) Plastic DFN TEMPERATURE RANGE 40°C to 125°C 40°C to 125°C 40°C to 125°C 40°C to 125°C Consult LTC Marketing for parts specified with wider operating temperature range

Key Features

  • High Efficiency: Up to 96%.
  • Very Low Quiescent Current: Only 20μA.
  • 1.25A Output Current.
  • 2.5V to 5.5V Input Voltage Range.
  • 2.25MHz Constant Frequency Operation.
  • No Schottky Diode Required.
  • Low Dropout Operation: 100% Duty Cycle.
  • 0.6V Reference Allows Low Output Voltages.
  • Shutdown Mode Draws ≤ 1μA Supply Current.
  • Current Mode Operation for Excellent Line and Load Transient Response.
  • Overtemperature Protected.
  • Low Profile (1.

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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 ■ 1.25A Output Current ■ 2.5V to 5.5V Input Voltage Range ■ 2.25MHz Constant Frequency Operation ■ No Schottky Diode Required ■ Low Dropout Operation: 100% Duty Cycle ■ 0.6V Reference Allows Low Output Voltages ■ Shutdown Mode Draws ≤ 1μA Supply Current ■ Current Mode Operation for Excellent Line and Load Transient Response ■ Overtemperature Protected ■ Low Profile (1mm) ThinSOTTM and 6-Lead (2mm × 3mm) U DFN Packages APPLICATIO S ■ Cellular Telephones ■ Wireless and DSL Modems ■ Digital Still Cameras ■ Media Players ■ Portable Instruments ■ Point of Load Regulation TYPICAL APPLICATIO 1.1μH VIN VIN SW CIN 22μF CER LTC3564 22pF RUN VFB GND 634k 316k 3564 TA01a VOUT 1.