Features and Benefits

  • Charge Current Programmable Up to 1A
  • Charges Single-Cell Li-Ion Batteries Directly from USB Port
  • Preset Charge Voltage with ±0.35% Accuracy
  • Thermistor Input for Temperature Qualified Charging
  • Input Supply Present Logic Output
  • Thermal Regulation Maximizes Charge Rate Without Risk of Overheating
  • Programmable Charge Current Detection/ Termination
  • Programmable Charge Termination Timer
  • Smart Pulsing Error Feature
  • SmartStart Prolongs Battery Life
  • 20μA Charger Quiescent Current in Shutdown
  • Available in a Low Profile (0.75mm) 10-Lead (3mm × 3mm) DFN Package

Product Details

The LTC4061 is a full-featured, flexible, standalone linear charger for single-cell Lithium-Ion batteries. It is capable of operating within USB power specifications.

Both programmable time and programmable current based termination schemes are available. Furthermore, the CHRG open-drain status pin can be programmed to indicate the battery charge state according to the needs of the application. Additional safety features designed to maximize battery lifetime and reliability include NTC battery temperature sensing and the SmartStart charging algorithm.

No external sense resistor or external blocking diode is required for charging due to the internal MOSFET architecture. Internal thermal feedback regulates the charge current to maintain a constant die temperature during high power operation or high ambient temperature conditions. The charge current is programmed with an external resistor. With power applied, the LTC4061 can be put into shutdown mode to reduce the supply current to 20μA and the battery drain current to less than 5μA.

Other features include smart recharge, USB C/5 current programming input, undervoltage lockout and AC Present logic output.

  Float Voltage (V)
LTC4061   4.2V
LTC4061-4.4    4.4V


  • Handheld Computers
  • Portable MP3 Players
  • Digital Cameras

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

LTC4061 Companion Parts

Recommended Related Parts

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.

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The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.

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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.