Overview

Features and Benefits

  • Low Loss PowerPath Control: Seamless, Automatic Transition from Battery to USB or Wall Adapter Power
  • Wide VIN Range: 1.8V to 5.5V
  • Buck-Boost VOUT: 1.5V to 5.25V
  • Buck-Boost Generates 3.3V at 300mA for VIN ≥ 1.8V, 3.3V at 800mA for VIN ≥ 3V
  • Dual 350mA Buck Regulators, VOUT: 0.6V to VIN
  • 38μA Quiescent Current in Burst Mode® Operation
  • 1.8V, 50mA Always-On LDO
  • Protected 100mA Hot Swap Output
  • Pushbutton On/Off Control
  • Current Limited 200mA MAX Output
  • Programmable Power-Up Sequencing
  • 24-lead 4mm × 4mm × 0.75mm QFN Package

Product Details

The LTC3101 is a complete power management solution for low power portable devices. It provides three high efficiency switching DC/DC converters which seamlessly transition from battery to USB/wall adapter power when available. A synchronous buck-boost regulator provides complete flexibility, allowing operation from a single Li-Ion/Polymer battery, 2 to 3 AA cells, a USB port or any other power source operating from 1.8V to 5.5V.

Two always-alive outputs, a 50mA LDO and a 200mA MAX output that tracks the higher voltage input supply, provide power for critical functions or additional external regulators. Flash memory cards can be directly powered from the protected 100mA Hot Swap output. Pushbutton control logic and a programmable-duration microprocessor reset generator simplify interfacing to a microprocessor while internal sequencing and independent enable pins provide flexible power-up options. The LTC3101 is available in a low profile (0.75mm) 24-lead 4mm × 4mm QFN package.

Applications

  • Ultra-Portable Digital Video Cameras
  • Personal Handheld GPS Navigators
  • Portable Medical Instruments

Product Lifecycle icon-recommended Production

At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

Evaluation Kits (1)

Tools & Simulations

LTspice

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.

LTspice

Models for the following parts are available in LTspice:

LTC3101

Product Recommendations

LTC3101 Companion Parts

Design Resources

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.

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The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.


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Evaluation Boards Pricing displayed is based on 1-piece.
Up to two boards can be purchased through Analog.com. To order more than two, please purchase through one of our listed distributors.
Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.