LTC3110
RECOMMENDED FOR NEW DESIGNS2A Bidirectional Buck-Boost DC/DC Regulator and Charger/Balancer
- Part Models
- 12
- 1ku List Price
- Starting From $6.73
Overview
- VCAP Operating Range: 0.1V to 5.5V
- VSYS 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
Documentation
Data Sheet 1
User Guide 1
Design Note 1
Technical Articles 3
3rd Party Solutions 1
Brochure 1
Rarely Asked Question 1
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 | ||
| LTC3110EFE#TRPBF | 24-Lead TSSOP w/ EP | ||
| LTC3110EUF#PBF | 24-Lead QFN (4mm x 4mm x 0.75mm w/ EP) | ||
| LTC3110EUF#TRPBF | 24-Lead QFN (4mm x 4mm x 0.75mm w/ EP) | ||
| LTC3110HFE#PBF | 24-Lead TSSOP w/ EP | ||
| LTC3110HFE#TRPBF | 24-Lead TSSOP w/ EP | ||
| LTC3110HUF#PBF | 24-Lead QFN (4mm x 4mm x 0.75mm w/ EP) | ||
| LTC3110HUF#TRPBF | 24-Lead QFN (4mm x 4mm x 0.75mm w/ EP) | ||
| LTC3110IFE#PBF | 24-Lead TSSOP w/ EP | ||
| LTC3110IFE#TRPBF | 24-Lead TSSOP w/ EP | ||
| LTC3110IUF#PBF | 24-Lead QFN (4mm x 4mm x 0.75mm w/ EP) | ||
| LTC3110IUF#TRPBF | 24-Lead QFN (4mm x 4mm x 0.75mm w/ EP) |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
May 18, 2026 - 26_0072 Epoxy Change for Select TSSOP Products |
||
| LTC3110EFE#PBF | PRODUCTION | |
| LTC3110EFE#TRPBF | PRODUCTION | |
| LTC3110HFE#PBF | PRODUCTION | |
| LTC3110HFE#TRPBF | PRODUCTION | |
| LTC3110IFE#PBF | PRODUCTION | |
| LTC3110IFE#TRPBF | PRODUCTION | |
|
Apr 6, 2022 - 22_0068 Laser Top Mark for ETSSOP and TSSOP Packages Assembled in ADPG [PNG] and UTL |
||
| 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
Can't find the software or driver you need?
Request a Driver/SoftwareHardware 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