LTC4041
Info : RECOMMENDED FOR NEW DESIGNS
searchIcon
cartIcon

LTC4041

2.5A Supercapacitor Backup Power Manager

Show More showmore-icon

Info : RECOMMENDED FOR NEW DESIGNS tooltip
Info : RECOMMENDED FOR NEW DESIGNS tooltip
Part Details
Part Models 4
1ku List Price Starting From $3.49
Features
  • 2.5A Step-Down Supercapacitor Charger and 2.5A Step-Up Backup Supply
  • 6.5A Switches for 2.5A Backup from One Supercapacitor or Two in Series
  • Input Current Limit Prioritizes Load over Charge Current
  • Input Disconnect Switch Isolates Input During Backup
  • Automatic Seamless Switch-Over to Backup Mode
  • Internal Supercapacitor Balancer (No External Resistors)
  • Programmable Charge Current and Charge Voltage
  • Input Power Fail Indicator
  • System Power Good Indicator
  • Optional OVP Circuitry Protects Device to >60V
  • Constant Frequency Operation
  • Thermally Enhanced 24-Lead 4mm × 5mm QFN Package
Additional Details
show more Icon

The LTC4041 is a complete supercapacitor backup system for 2.9V to 5.5V supply rails. It contains a high current step-down DC/DC converter to charge a single supercapacitor or two supercapacitors in series. When input power is unavailable, the step-down regulator operates in reverse as a step-up regulator to backup the system output from the supercapacitor(s).

The LTC4041’s adjustable input current limit function reduces charge current to protect the input supply from overload while an external disconnect switch isolates the input supply during backup. When the input supply drops below the adjustable PFI threshold, the 2.5A boost regulator delivers power from the supercapacitor to the system output.

An optional input overvoltage protection (OVP) circuit protects the LTC4041 from high voltage damage at the VIN pin. An internal supercapacitor balancing circuit maintains equal voltages across each supercapacitor and limits the maximum voltage of each supercapacitor to a pre-determined value. The LTC4041 is available in a low profile (0.75mm) 24-Lead 4mm × 5mm QFN package.

Applications

  • Ride-Through “Dying Gasp” Supplies
  • High Current Ride-Through 3V to 5V UPS
  • Power Meters/Industrial Alarms
  • Servers/Solid State Drives
Part Models 4
1ku List Price Starting From $3.49

close icon
Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
LTC4041EUFD#PBF
  • HTML
  • HTML
LTC4041EUFD#TRPBF
  • HTML
  • HTML
LTC4041IUFD#PBF
  • HTML
  • HTML
LTC4041IUFD#TRPBF
  • HTML
  • HTML
Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 1

reference details image

DC2642A

LTC4041 Demo Board | 2.5A Supercapacitor Backup Power Manager

zoom

DC2642A

LTC4041 Demo Board | 2.5A Supercapacitor Backup Power Manager

LTC4041 Demo Board | 2.5A Supercapacitor Backup Power Manager

Product Detail

Demonstration circuit 2642A shows the LTC4041 supercapacitor backup power manager operating with either a stack of two series supercapacitors (DC2642A-A) or a single supercapacitor (DC2642A-B). The board demonstrates the design of a 5V rail with a short-term power backup using 10F supercapacitors.

The input current limit, charge current limit, charge voltage, power fail threshold, and boost voltage are all configurable through changing resistor values on the board. Test points for all monitoring pins and LED indicators on status pins are also available to assist in the evaluation.

Tools & Simulations

Tools & Simulations 2

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.

Recently Viewed