Features and Benefits

  • Complete Backup Battery Manager for Li-Ion/Polymer, Lead Acid, NiMH/NiCd Batteries and Super Capacitors
  • Charge and Discharge Battery with Voltages Above and Below the Input Supply Voltage
  • “No Heat” Battery Calibration Discharge Using System Load
  • Automatic Battery Backup with Input Supply Removal Using PowerPath Control
  • Standalone for Li-Ion/Polymer, SLA, and Supercaps
  • Optional SMBus/I2C Support Allows Battery Capacity Calibration Operation with Host
  • Over- and Under-Battery Voltage Protection
  • Adjustable Battery Float Voltage
  • Precision Charge Voltage ±0.5%
  • Programmable Charge/Calibration Current Up to 3A with ±3% Accuracy
  • Optional Temperature Qualified Charging
  • Wide Backup Battery Supply Range: 2.7V to 19V
  • Wide Input Supply Range: 4.5V to 19V
  • 38-Lead (5mm × 7mm) QFN Package

Product Details

The LTC4110 is a complete single chip, high efficiency, flyback battery charge and discharge manager with automatic switchover between the input supply and the backup battery or super capacitor. The IC provides four modes of operation: battery backup, battery charge, battery calibration and shutdown. Battery backup and battery charge are automatic standalone modes, while the optional calibration mode requires a CPU host to communicate over an SMBus. During calibration the flyback charger is used in reverse to discharge the battery with a programmable constant current into the system load eliminating heat generation. Three status outputs can be individually reconfigured over the SMBus to become GPIOs. User programmable over-discharge protection is provided. The SHDN pin isolates the battery to support shipping the product with a charged battery installed.

Multiple LTC4110s can be combined to form a redundant battery backup system or increase the number of battery packs to achieve longer backup run times.

The LTC4110 is available in a low profile (0.75mm), 38-pin 5mm × 7mm QFN package. The QFN features an exposed metal die mount pad for optimum thermal performance.


  • Backup Battery Systems
  • Server Memory Backup
  • Medical Equipment
  • High Reliability Systems

Product Lifecycle icon-recommended Production

At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

Evaluation Kits (1)

Product Recommendations

LTC4110 Companion Parts

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Design Resources

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.

Sample & Buy

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Evaluation Boards

Pricing displayed is based on 1-piece.

Up to two boards can be purchased through Analog.com. To order more than two, please purchase through one of our listed distributors.

Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.