LTC4041

RECOMMENDED FOR NEW DESIGNS

2.5A Supercapacitor Backup Power Manager

Data Sheet (Rev. 0) Product Selection Table

Part Models: 4
1ku List Price: Starting From $3.49

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Part Details

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

Part Models: 4
1ku List Price: Starting From $3.49

Documentation

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. View our quality and reliability program and certifications for more information.

Part Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
LTC4041EUFD#PBF	24-Lead QFN (4mm x 5mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC4041EUFD#TRPBF	24-Lead QFN (4mm x 5mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC4041IUFD#PBF	24-Lead QFN (4mm x 5mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC4041IUFD#TRPBF	24-Lead QFN (4mm x 5mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Feb 14, 2025 - 25_0017 Bond Wire Change from Gold to Copper
		PCN25_0017_Form Material_Report Qualification Results Summary
LTC4041EUFD#PBF	PRODUCTION
LTC4041EUFD#TRPBF	PRODUCTION
LTC4041IUFD#PBF	PRODUCTION
LTC4041IUFD#TRPBF	PRODUCTION

This is the most up-to-date revision of the Data Sheet.

Tools & Simulations

LTspice 1

LTC4041 - Power Management

Models for the following parts are available in LTspice:

LTC4041

Design Tool 1

LTC4041 - Backup Time Calculator

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

LTC4041 Demo Board | 2.5A Supercapacitor Backup Power Manager

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Product Details

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.