LTC4061

PRODUCTION

Standalone Linear Li-Ion Battery Charger with Thermistor Input

Data Sheet Product Selection Table
Viewing:

Overview

  • 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

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

Applications

  • Handheld Computers
  • Portable MP3 Players
  • Digital Cameras
LTC4061
Standalone Linear Li-Ion Battery Charger with Thermistor Input
800mA Single-Cell Li-Ion Battery Charger (C/10 Termination) Complete Charge Cycle (1100mAh Battery) Product Package 1
Add to myAnalog

Add product to the Products section of myAnalog (to receive notifications), to an existing project or to a new project.

Create New Project
Ask a Question

Documentation

Data Sheet 1

Reliability Data 1

User Guide 1

Application Note 1

Technical Articles 2

Data Sheet

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

Learn More
Add to myAnalog

Add media to the Resources section of myAnalog, to an existing project or to a new project.

Create New Project

Software Resources

Can't find the software or driver you need?

Request a Driver/Software

Hardware Ecosystem

Parts Product Life Cycle Description
Circuit Monitors 1
LTC2960
RECOMMENDED FOR NEW DESIGNS 36V Nano-Current Two-Input Voltage Monitor
Protection Switches & Controllers 3
LTC4361-1
LTC4361-2
Overvoltage/Overcurrent Protection Controller
LTC4412
RECOMMENDED FOR NEW DESIGNS Low Loss PowerPath™ Controller in ThinSOT
LTC2955
RECOMMENDED FOR NEW DESIGNS Pushbutton On/Off Controller with Automatic Turn-On
Modal heading
Add to myAnalog

Add product to the Products section of myAnalog (to receive notifications), to an existing project or to a new project.

Create New Project

Evaluation Kits

eval board
schematic 1
DC788A

LTC4061EDD | Single Cell Li-Ion Battery Charger, VIN = 4.3V to 8V, Batt = 4.2V @ 50mA to 1A

Buy Now View Details

Product Details

Demonstration circuit 788A is a complete constant-current, constant-voltage battery charger for one Lithium-Ion cell and featuring the LTC4061EDD. The demo board has an input voltage range of 4.3V to 8V, suitable for USB applications. Jumpers on the board allow charge currents from 50mA to 1A to be programmed and several charge termination methods to be used. Terminals are provided for adding a thermistor for sensing battery temperature, shutting down the charger, monitoring charge current and programming the minimum charge current level for termination (IDETECT).


The LTC4061 features an internal P-channel power MOSFET with a unique thermal feedback loop that reduces the output current under high ambient temperature and/or high power dissipation conditions. This feature allows the charger to provide higher charge currents under normal conditions and still provide safe charging under abnormal conditions such as high ambient temperature, high input voltage or low battery voltage.
DC788A
LTC4061EDD | Single Cell Li-Ion Battery Charger, VIN = 4.3V to 8V, Batt = 4.2V @ 50mA to 1A
DC788A - Schematic

Latest Discussions

No discussions on LTC4061 yet. Have something to say?

Start a Discussion on EngineerZone®

Recently Viewed