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LM3670 - Miniature Step-Down DC-DC Converter

Datasheet Summary

Description

The LM3670 step-down DC-DC converter is optimized for powering ultralow voltage circuits from a single Li-Ion cell or three-cell NiMH/NiCd batteries.

It provides up to 350-mA load current, over an input voltage range from 2.5 V to 5.5 V.

Features

  • 1 Input Voltage Range: 2.5 V to 5.5 V.
  • Adjustable Output Voltages (VOUT): 0.7 V to 2.5 V.
  • Fixed Output Voltages: 1.2 V, 1.5 V, 1.6 V, 1.8 V, 1.875 V, 3.3V.
  • 15-µA Typical Quiescent Current.
  • 350-mA Maximum Load Capability.
  • 1-MHz PWM Fixed Switching Frequency (Typical).
  • Automatic PFM and PWM Mode Switching.
  • Low Dropout Operation.
  • 100% Duty Cycle Mode.
  • Internal Synchronous Rectification for High Efficiency.

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Datasheet preview – LM3670

Datasheet Details

Part number LM3670
Manufacturer Texas Instruments
File Size 1.24 MB
Description Miniature Step-Down DC-DC Converter
Datasheet download datasheet LM3670 Datasheet
Additional preview pages of the LM3670 datasheet.

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Full PDF Text Transcription

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Product Folder Sample & Buy Technical Documents Tools & Software Support & Community LM3670 SNVS250F – NOVEMBER 2004 – REVISED FEBRUARY 2016 LM3670 Miniature Step-Down DC-DC Converter for Ultralow Voltage Circuits 1 Features •1 Input Voltage Range: 2.5 V to 5.5 V • Adjustable Output Voltages (VOUT): 0.7 V to 2.5 V • Fixed Output Voltages: 1.2 V, 1.5 V, 1.6 V, 1.8 V, 1.875 V, 3.3V • 15-µA Typical Quiescent Current • 350-mA Maximum Load Capability • 1-MHz PWM Fixed Switching Frequency (Typical) • Automatic PFM and PWM Mode Switching • Low Dropout Operation – 100% Duty Cycle Mode • Internal Synchronous Rectification for High Efficiency • Internal Soft Start • 0.
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