LTC4061-4.4

PRODUCTION

Standalone Linear Li-Ion Battery Charger with Thermistor Input

Part Models: 2
1ku List Price: Starting From $2.91

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Part Details

Charge Current Programmable up to 1A
Charges Single Cell Li-Ion Batteries Directly from USB Port
Preset 4.375V Float Voltage with ±0.4% 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

The LTC4061-4.4 is a full-featured, flexible, standalone linear charger for single-cell 4.375V 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 LTC4061-4.4 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

Applications

Handheld Computers
Portable MP3 Players
Digital Cameras

Part Models: 2
1ku List Price: Starting From $2.91

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
LTC4061EDD-4.4#PBF	10-Lead DFN (3mm x 3mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC4061EDD-4.4#TRPBF	10-Lead DFN (3mm x 3mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys

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

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