LTC4055
LTC4055-1

PRODUCTION

USB Power Controller and Li-Ion Linear Charger

Data Sheet Product Selection Table

Part Models: 4
1ku List Price: Starting From $2.93

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Part Details

Charges Single Cell Li-Ion Batteries Directly from USB Port
Load Dependent Charging Guarantees USB Input Current Compliance
Automatic Battery Switchover When Input Supply is Removed
Constant-Current/Constant-Voltage Operation with Thermal Feedback to Maximize Charging Rate Without Risk of Overheating*
Selectable 500mA/100mA Current Limit
Low Loss Full PowerPath^™ Control with Ideal Diode Operation (Reverse Current Blocking)
Preset 4.2V Charge Voltage with 0.8% Accuracy (4.1V for LTC4055-1)
4.1V Float Voltage (LTC4055-1) Improves Battery Life and High Temperature Safety Margin
USB-Compliant Suspend Mode
Programmable Charge Current and Termination Timer
Soft-Start Limits Inrush Current
NTC Thermistor Input for Temperature Qualified Charging
Tiny (4mm x 4mm x 0.75mm) QFN Package

Part Models: 4
1ku List Price: Starting From $2.93

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
LTC4055EUF#PBF	16-Lead QFN (4mm x 4mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC4055EUF#TRPBF	16-Lead QFN (4mm x 4mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC4055EUF-1#PBF	16-Lead QFN (4mm x 4mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC4055EUF-1#TRPBF	16-Lead QFN (4mm x 4mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys

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 Fuel Gauge and Coulomb Counter 1
LTC2942	NOT RECOMMENDED FOR NEW DESIGNS	Battery Gas Gauge with Temperature, Voltage Measurement
Surge Stopper, Overvoltage, and Overcurrent Protection 1
LTC4360-1 LTC4360-2		Overvoltage Protection Controller
USB Isolators 1
LTM2884	PRODUCTION	Isolated USB Transceiver with Isolated Power