LTC4054-4.2

PRODUCTION

Standalone Linear Li-Ion Battery Charger with Thermal Regulation in ThinSOT

Part Models
2
1ku List Price
Starting From $1.89
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Part Details

  • Programmable Charge Current Up to 800mA
  • No MOSFET, Sense Resistor or Blocking Diode Required
  • Complete Linear Charger in ThinSOT Package for Single Cell Lithium-Ion Batteries
  • Constant-Current/Constant-Voltage Operation with Thermal Regulation* to Maximize Charge Rate Without Risk of Overheating
  • Charges Single Cell Li-Ion Batteries Directly from USB Port
  • Preset 4.2V Charge Voltage with ±1% Accuracy
  • Charge Current Monitor Output for Gas Gauging*
  • Automatic Recharge
  • Charge Status Output Pin
  • C/10 Charge Termination
  • 25µA Supply Current in Shutdown
  • 2.9V Trickle Charge Threshold (LTC4054)
  • Available Without Trickle Charge (LTC4054X)
  • Soft-Start Limits Inrush Current
  • Available in 5-Lead SOT-23 Package
LTC4054-4.2
Standalone Linear Li-Ion Battery Charger with Thermal Regulation in ThinSOT
600mA Single Cell Li-Ion Charger Complete Charge Cycle (750mAh Battery) Product Package 1
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Documentation

Data Sheet

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

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Hardware Ecosystem

Parts Product Life Cycle Description
Protection Switches & Controllers 2
LTC4361-1
LTC4361-2
Overvoltage/Overcurrent Protection Controller
LTC4417 RECOMMENDED FOR NEW DESIGNS Prioritized PowerPath Controller
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Tools & Simulations

LTspice 1


Models for the following parts are available in LTspice:

  • LTC4054-4.2
  • LTC4054L-4.2
  • LTC4054X-4.2
LTspice

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

eval board
DC569B

LTC4054ES5-4.2 | Li-Ion Linear Battery Charger, 4.25V ≤ VIN ≤ 10V, 1-Cell @ 450mA/600mA ICHARGE

Product Details

Demonstration circuit 569 is a single cell Li-Ion linear charger in a SOT-23. Charge rates as high as 600mA can be achieved due to the LTC4054’s internal die temperature control loop that prevents excessive PCB heating under worst-case conditions. The user is provided with a control jumper to select between OFF/450mA/600mA charge rates. The reduced charge rate is suitable for USB applications. A charge LED illuminates while the charger is charging the battery.

DC569B
LTC4054ES5-4.2 | Li-Ion Linear Battery Charger, 4.25V ≤ VIN ≤ 10V, 1-Cell @ 450mA/600mA ICHARGE
DC569B - Schematic

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