LTC3110

RECOMMENDED FOR NEW DESIGNS

2A Bidirectional Buck-Boost DC/DC Regulator and Charger/Balancer

Data Sheet (Rev. C) Product Selection Table

Part Models: 12
1ku List Price: Starting From $5.31

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Overview

V_CAP Operating Range: 0.1V to 5.5V
V_SYS Operating Range: 1.71V to 5.25V
Automatic Switchover from Charge to Backup Mode
Programmable ±2% Accurate Charge Input Current Limit from 125mA to 2A
±1% Backup Voltage Accuracy
Automatic Backup Capacitor Balancing

Fixed 1.2MHz Switching Frequency
Burst Mode^® Operation: 40μA Quiescent Current
Built-In Programmable Multipurpose Comparator with Open-Collector Output
Open-Collector Outputs to Indicate Direction of Operation and End of Charge
Thermally Enhanced TSSOP-24 and 4mm × 4mm QFN-24 Packages

The LTC3110 is a 2A bidirectional buck-boost DC/DC regulator with capacitor charger and balancer. Its wide 0.1V to 5.5V capacitor/battery voltage and 1.8V to 5.25V system backup voltage ranges make it well suited to a wide variety of backup applications using supercapacitors or batteries. A proprietary low noise switching algorithm optimizes efficiency with capacitor/battery voltages that are above, below or equal to the system output voltage.

The LTC3110 can autonomously transition from charge to backup mode or switch modes based on an external command. Pin-selectable Burst Mode operation reduces standby current and improves light-load efficiency, which combined with a 1μA shutdown current make the LTC3110 ideally suited for backup applications. Additional features include voltage supervisors for direction control and end of charge, and a general purpose comparator with open-collector output for interfacing with a μC. The LTC3110 is available in thermally enhanced, low profile 24-lead TSSOP and 4mm × 4mm QFN packages.

Applications

Supercapacitor Backup Converter and Charger
Battery Backup Converter and Charger
Servers, RAID Systems
RF Systems with Battery/Capacitor Backup

Part Models: 12
1ku List Price: Starting From $5.31

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
LTC3110EFE#PBF	24-Lead TSSOP w/ EP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC3110EFE#TRPBF	24-Lead TSSOP w/ EP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC3110EUF#PBF	24-Lead QFN (4mm x 4mm x 0.75mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC3110EUF#TRPBF	24-Lead QFN (4mm x 4mm x 0.75mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC3110HFE#PBF	24-Lead TSSOP w/ EP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC3110HFE#TRPBF	24-Lead TSSOP w/ EP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC3110HUF#PBF	24-Lead QFN (4mm x 4mm x 0.75mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC3110HUF#TRPBF	24-Lead QFN (4mm x 4mm x 0.75mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC3110IFE#PBF	24-Lead TSSOP w/ EP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC3110IFE#TRPBF	24-Lead TSSOP w/ EP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC3110IUF#PBF	24-Lead QFN (4mm x 4mm x 0.75mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC3110IUF#TRPBF	24-Lead QFN (4mm x 4mm x 0.75mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Apr 6, 2022 - 22_0068 Laser Top Mark for ETSSOP and TSSOP Packages Assembled in ADPG [PNG] and UTL
		PCN22_0068_Form Material_Report Delta Qualification Matrix
LTC3110EFE#PBF	PRODUCTION
LTC3110EFE#TRPBF	PRODUCTION
LTC3110HFE#PBF	PRODUCTION
LTC3110HFE#TRPBF	PRODUCTION
LTC3110IFE#PBF	PRODUCTION
LTC3110IFE#TRPBF	PRODUCTION

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

Software Resources

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Hardware Ecosystem

Parts	Product Life Cycle	Description
Battery Charger ICs 1
LTC4040	RECOMMENDED FOR NEW DESIGNS	2.5A Battery Backup Power Manager
Switching Regulators & Controllers 2
LTC3128	RECOMMENDED FOR NEW DESIGNS	3A Monolithic Buck-Boost Supercapacitor Charger and Balancer with Accurate Input Current Limit
LTC3643	RECOMMENDED FOR NEW DESIGNS	2A Bidirectional Power Backup Supply

Tools & Simulations

LTspice

Models for the following parts are available in LTspice:

LTC3110

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

LTC3110 Demo Board | Bidirectional Buck-Boost with Supercap Charger/Balancer, 1.8V ≤ VIN ≤ 5.5V, 1.8V or 3.2V VBACKUP at 2A

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Product Details

Demonstration circuit 1964A is a 2A, bidirectional buckboost DC/DC regulator and charger/balancer, featuring the LTC3110 boost controller. Its wide voltage range both in capacitor/battery charger mode and in system backup mode makes it well suited to a wide variety of applications using supercapacitors and batteries.