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LTC3548-1 - Fixed Output 2.25MHz Step-Down DC/DC Regulator

General Description

The LTC®3548-1 is a dual, fixed output, constant-frequency, synchronous step-down DC/DC converter.

Key Features

  • n High Efficiency: Up to 95% n 1.8V at 800mA/1.575V at 400mA n Very Low Quiescent Current: Only 40μA n 2.25MHz Constant-Frequency Operation n High Switch Current: 1.2A and 0.7A n No Schottky Diodes Required n VIN: 2.5V to 5.5V n Current Mode Operation for Excellent Line and Load Transient Response n Short-Circuit Protected n Low Dropout Operation: 100% Duty Cycle n Ultralow Shutdown Current: IQ < 1μA n Small Thermally Enhanced 3mm × 3mm DFN Packages.

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Other Datasheets by Linear Technology (now Analog Devices)

Part Number Description
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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 n High Efficiency: Up to 95% n 1.8V at 800mA/1.575V at 400mA n Very Low Quiescent Current: Only 40μA n 2.25MHz Constant-Frequency Operation n High Switch Current: 1.2A and 0.7A n No Schottky Diodes Required n VIN: 2.5V to 5.5V n Current Mode Operation for Excellent Line and Load Transient Response n Short-Circuit Protected n Low Dropout Operation: 100% Duty Cycle n Ultralow Shutdown Current: IQ < 1μA n Small Thermally Enhanced 3mm × 3mm DFN Packages APPLICATIONS n PDAs/Palmtop PCs n Digital Cameras n Cellular Phones n Portable Media Players n PC Cards n Wireless and DSL Modems LTC3548-1 Dual Synchronous, Fixed Output 2.25MHz Step-Down DC/DC Regulator DESCRIPTION The LTC®3548-1 is a dual, fixed output, constant-frequency, synchronous step-down DC/DC converter.