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LTC3421 - 3MHz Micropower Synchronous Boost Converter

Description

The LTC®3421 is a high efficiency, current mode, fixed frequency, step-up DC/DC converter with true output disconnect and inrush current limiting.

The device includes a 0.10Ω N‑channel MOSFET switch and a 0.14Ω P-channel synchronous rectifier.

Features

  • nn Synchronous Rectification: Up to 96% Efficiency nn True Output Disconnect nn Inrush Current Limiting nn Very Low Quiescent Current: 12µA nn Up to 1.5A Continuous Output Current nn Fixed Frequency Operation Up to 3MHz nn 0.5V to 4.5V Input Range nn 2.4V to 5.25V Adjustable Output Voltage nn Guaranteed 1V Start-Up nn Programmable Current Limit nn Programmable Soft-Start nn Synchronizable Oscillator nn Manual or Automatic Burst Mode® Operation nn Low-Battery Comparator nn.

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Full PDF Text Transcription

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LTC3421 3A, 3MHz Micropower Synchronous Boost Converter with Output Disconnect FEATURES nn Synchronous Rectification: Up to 96% Efficiency nn True Output Disconnect nn Inrush Current Limiting nn Very Low Quiescent Current: 12µA nn Up to 1.5A Continuous Output Current nn Fixed Frequency Operation Up to 3MHz nn 0.5V to 4.5V Input Range nn 2.4V to 5.25V Adjustable Output Voltage nn Guaranteed 1V Start-Up nn Programmable Current Limit nn Programmable Soft-Start nn Synchronizable Oscillator nn Manual or Automatic Burst Mode® Operation nn Low-Battery Comparator nn <1µA Shutdown Current nn 1.
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