LTC3101

RECOMMENDED FOR NEW DESIGNS

Wide VIN, Multi-Output DC/DC Converter and PowerPath Controller

Data Sheet Product Selection Table
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Overview

  • 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

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
LTC3101
Wide VIN, Multi-Output DC/DC Converter and PowerPath Controller
Efficiency vs VBAT Product Package 1
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Documentation

Data Sheet 1

Reliability Data 1

User Guide 1

Technical Articles 1

Data Sheet

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Software Resources

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Hardware Ecosystem

Parts Product Life Cycle Description
Battery Monitors & Fuel Gauges 1
LTC2942
NOT RECOMMENDED FOR NEW DESIGNS Battery Gas Gauge with Temperature, Voltage Measurement
Circuit Monitors 1
LTC2960
RECOMMENDED FOR NEW DESIGNS 36V Nano-Current Two-Input Voltage Monitor
Protection Switches & Controllers 3
LTC4362-1
LTC4362-2
1.2A Overvoltage/Overcurrent Protector
LTC2955
RECOMMENDED FOR NEW DESIGNS Pushbutton On/Off Controller with Automatic Turn-On
LTC4417
RECOMMENDED FOR NEW DESIGNS Prioritized PowerPath™ Controller
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Tools & Simulations

LTspice

Models for the following parts are available in LTspice:

  • LTC3101
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.

Evaluation Kits

eval board
schematic 1
DC1443A

LTC3101EUF Demo Board | 2-Cell, Multi-Output DC/DC Converter and PowerPath Manager

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Product Details

DC1443A: Demo Board for the LTC3101 Wide VIN, Multi-Output DC/DC Converter and PowerPath Controller.
DC1443A
LTC3101EUF Demo Board | 2-Cell, Multi-Output DC/DC Converter and PowerPath Manager
DC1443A - Schematic

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