LTC4061
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LTC4061

Standalone Linear Li-Ion Battery Charger with Thermistor Input

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1ku List Price Starting From $2.66
Features
  • 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
Additional Details
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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
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Part Models 2
1ku List Price Starting From $2.66
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LTC4061

Documentation

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Data Sheet

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UPDATED 07/22/2010
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LTC4061: Standalone Linear Li-Ion Battery Charger with Thermistor Input Data Sheet

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UPDATED 12/21/2010
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LTC4061: サーミスタ入力を装備したスタンドアロン・リニア・リチウムイオン・バッテリ・チャージャ データシート

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Reliability Data

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UPDATED 03/27/2018
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R402 Reliability Data redirect icon

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User Guide

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UPDATED 09/24/2009
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DC788A - Demo Manual redirect icon

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Application Note

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UPDATED 06/01/2020
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Reverse Voltage Protection for Battery Chargers redirect icon

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UPDATED 06/01/2020
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Documentation

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#PBF 10-Lead DFN (3mm x 3mm w/ EP) external-link
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  • Material Declaration external-link
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  • Reliablity Data external-link
LTC4061EDD#TRPBF 10-Lead DFN (3mm x 3mm w/ EP) external-link
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Software & Part Ecosystem

Software & Part Ecosystem

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Evaluation Kit

Evaluation Kits 1

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DC788A

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

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DC788A

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

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DC788A
LTC4061EDD | Single Cell Li-Ion Battery Charger, VIN = 4.3V to 8V, Batt = 4.2V @ 50mA to 1A
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Product Detail

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.

Resources

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DC788A - Design File Download

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DC788A - Schematic Download

27.00K

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DC788A - Demo Manual Download

534.00K

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Evaluation Kits1

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DC788A

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

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