Power Management Battery Management Battery Charger IC Linear Battery Chargers

LTC4063 - Standalone Linear Li-Ion Charger with Micropower Low Dropout Linear Regulator

Features

  • Charge Current Programmable up to 1A
  • Integrated 100mA Adjustable Low Dropout Linear Regulator
  • Charges Single Cell Li-Ion Batteries Directly from USB Port
  • Preset Charge Voltage with ±0.35% Accuracy
  • No External MOSFET, Sense Resistor or Blocking Diode Needed
  • Thermal Regulation Maximizes Charge Rate without Risk of Overheating
  • Adjustable LDO Output Voltage Range:
    1.2V to 4.2V
  • Programmable Charge Termination Timer
  • Programmable Charge Current Detection/Termination
  • SmartStart™ Prolongs Battery Life
  • Charge Status Output
  • 35μA Charger Quiescent Current in Shutdown
  • 15μA LDO Quiescent Current
  • Available in a Low Profile (0.75mm) 10-Lead (3mm × 3mm) DFN Package

Typical Application

LTC4063 Typical Application
LTC4063 Typical Application

Description

The LTC4063 is a standalone linear charger for single cell lithium-ion batteries with an adjustable low dropout linear regulator (LDO). The adjustable LDO regulates an output voltage between 1.2V to 4.2V at up to 100mA load current. When the input supply (wall adapter or USB supply) is removed, the LDO regulates the output voltage without interruption. The battery charger and LDO regulator can be enabled individually.

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 float voltage is fixed at 4.2V and the charge current is programmed with an external resistor. Charge termination methods include minimum charge current or maximum time. With power applied, the LTC4063 can be put into shutdown mode to reduce the supply current to 35μA and the battery drain current to less than 2μA.

Other features include smart recharge, undervoltage lockout, LDO current limiting and a charge status pin to indicate when the charge cycle has completed.

Packaging

CAD Symbols and Footprints: The downloadable Zip file below contains the schematic symbol and PCB footprints.

For complete and up to date package information and drawings, please refer to our packaging page

Part Number Package Code Temp Package
Drawing		 RoHS
LTC4063EDD#PBF 3x3 DFN-10 DD E 05-08-1699 Yes
LTC4063EDD#TRPBF 3x3 DFN-10 DD E 05-08-1699 Yes


LTC4063 Package Drawing

Order Info

  • Part numbers ending in PBF are lead free. Solder plated terminal finish (SnPb) versions are non-standard and special terms and conditions and pricing applies if available. Please contact LTC marketing for information.
  • Part numbers containing TR or TRM are shipped in tape and reel or 500 unit mini tape and reel, respectively
  • Please refer to our general ordering information or the product datasheet for more details

Package Variations and Pricing

Part Number Package Temp Price
(1-99)		 Price
(1k)*		 RoHS
LTC4063EDD#PBF 3x3 DFN-10 E $2.50 $2.10 Yes
LTC4063EDD#TRPBF 3x3 DFN-10 E $2.20 Yes
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* The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Linear Technology sales office or authorized distributor.

Demo Boards

Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.

Part Number Description Price Documentation
DC735A LTC4063EDD | Lithium-Ion Linear Battery Charger with LDO Regulator, Vin = 4.3V-8V, BAT = 4.2V at 0.5V/1A, LDOout = 3V at 100mA $100.00
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Click here to view our complete list of demo boards

Applications

  • Handheld Computers
  • Portable MP3 Players
  • Digital Cameras

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Linear Technology provides a variety of custom design simulation tools and device models to allow even novice designers to quickly and easily evaluate circuits using high performance switching regulators, amplifiers, data converters, filters and more. Please visit our Design Tools page to view and download:

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