LTC4011 - High Efficiency Standalone Nickel Battery Charger

Features

  • Complete NiMH/NiCd Charger for 1 to 16 Cells
  • No Microcontroller or Firmware Required
  • 550kHz Synchronous PWM Current Source Controller
  • No Audible Noise with Ceramic Capacitors
  • PowerPath™ Control Support
  • Programmable Charge Current: 5% Accuracy
  • Wide Input Voltage Range: 4.5V to 34V
  • Automatic Trickle Precharge
  • –ΔV Fast Charge Termination
  • Optional ΔT/Δt Fast Charge Termination
  • Automatic NiMH Top-Off Charge
  • Programmable Timer
  • Automatic Recharge
  • Multiple Status Outputs
  • Micropower Shutdown
  • 20-Lead Thermally Enhanced TSSOP Package

Typical Application

LTC4011 Typical Application
LTC4011 Typical Application

Description

The LTC4011 provides a complete, cost-effective nickel battery fast charge solution in a small package using few external components. A 550kHz PWM current source controller and all necessary charge initiation, monitoring and termination control circuitry are included.

The LTC4011 automatically senses the presence of a DC adapter and battery insertion or removal. Heavily discharged batteries are precharged with a trickle current. The LTC4011 can simultaneously use both –ΔV and ΔT/Δt fast charge termination techniques and can detect various battery faults. If necessary, a top-off charge is automatically applied to NiMH batteries after fast charging is completed. The IC will also resume charging if the battery self-discharges after a full charge cycle.

All LTC4011 charging operations are qualified by actual charge time and maximum average cell voltage. Charging may also be gated by minimum and maximum temperature limits. NiMH or NiCd fast charge termination parameters are pin-selectable.

Integrated PowerPath control support ensures that the system remains powered at all times without allowing load transients to adversely affect charge termination.

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
LTC4011CFE#PBF TSSOP-20 FE C 05-08-1663 (CB) Yes
LTC4011CFE#TRPBF TSSOP-20 FE C 05-08-1663 (CB) Yes


LTC4011 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
LTC4011CFE#PBF TSSOP-20 C $6.57 $4.60 Yes
LTC4011CFE#TRPBF TSSOP-20 C $4.72 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
DC674B LTC4011EFE Demo Boar | Vin = 4.5V to 25V, NiCd/NiMH 2A Sync Buck Battery Charger $100.00
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Click here to view our complete list of demo boards

Applications

  • Integrated or Standalone Battery Charger
  • Portable Instruments or Consumer Products
  • Battery-Powered Diagnostics and Control
  • Back-Up Battery Management

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Design Tools

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:

  • LTspice - A powerful SPICE simulator, schematic capture and waveform viewer with enhancements and models for easing the simulation of switching regulators
  • LTpowerCAD - A complete power supply selection, synthesis and design tool
  • LTpowerPlay - A development environment supporting Linear Technology's Digital Power System Management (PSM) products
  • PScope & QuikEval - USB-based product demonstration and data acquisition system for use with our ADCs, DACs, and more
  • Linduino - Arduino compatible system for developing and distributing firmware libraries and example code
  • LinearLab Tools - A collection of Matlab and Python programs that provide direct access to Linear Technology’s data converter evaluation boards
  • And More!

Technical Support