LTC4060 - Standalone Linear NiMH/NiCd Fast Battery Charger

Features

  • Complete Fast Charger Controller for Single, 2-, 3- or 4-Series Cell NiMH/NiCd Batteries
  • No Firmware or Microcontroller Required
  • Termination by –∆V, Maximum Voltage or Maximum Time
  • No Sense Resistor or Blocking Diode Required
  • Automatic Recharge Keeps Batteries Charged
  • Programmable Fast Charge Current: 0.4A to 2A
  • Accurate Charge Current: ±5% at 2A
  • Fast Charge Current Programmable Beyond 2A with External Sense Resistor
  • Automatic Detection of Battery
  • Precharge for Heavily Discharged Batteries
  • Optional Temperature Qualified Charging
  • Charge and AC Present Status Outputs Can Drive LED
  • Automatic Sleep Mode with Input Supply Removal
  • Negligible Battery Drain in Sleep Mode: <1µA
  • Manual Shutdown
  • Input Supply Range: 4.5V to 10V
  • Available in 16-Lead DFN and TSSOP Packages

Typical Application

LTC4060 Typical Application
LTC4060 Typical Application

Description

The LTC4060 is a complete fast charging system for NiMH or NiCd batteries. Just a few external components are needed to design a standalone linear charging system.

An external PNP transistor provides charge current that is user programmable with a resistor. A small external capacitor sets the maximum charge time. No external current sense resistor is needed, and no blocking diode is required.

The IC automatically senses the DC input supply and battery insertion or removal. Heavily discharged batteries are initially charged at a C/5 rate before a fast charge is applied. Fast charge is terminated using the –∆V detection method. Backup termination consists of a programmable timer and battery overvoltage detector. An optional external NTC thermistor can be used for temperature-based qualification of charging. An optional programmable recharge feature automatically recharges batteries after discharge.

Manual shutdown is accomplished with the SHDN pin, while removing input power automatically puts the LTC4060 into sleep mode. During shutdown or sleep mode, battery drain is <1µA.

The LTC4060 is available in both low profile (0.75mm) 16- pin 5mm × 3mm DFN and 16-lead TSSOP packages. Both feature exposed metal die mount pads for optimum thermal performance.

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
LTC4060EDHC#PBF 5x3 DFN-16 DHC E 05-08-1706 Yes
LTC4060EDHC#TRPBF 5x3 DFN-16 DHC E 05-08-1706 Yes
LTC4060EFE#PBF TSSOP-16 FE E 05-08-1663 (BC) Yes
LTC4060EFE#TRPBF TSSOP-16 FE E 05-08-1663 (BC) Yes


LTC4060 Package Drawing
LTC4060 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
LTC4060EDHC#PBF 5x3 DFN-16 E $4.52 $3.80 Yes
LTC4060EDHC#TRPBF 5x3 DFN-16 E $3.90 Yes
LTC4060EFE#PBF TSSOP-16 E $4.40 $3.70 Yes
LTC4060EFE#TRPBF TSSOP-16 E $3.82 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
DC783A LTC4060EFE Demo Board | 2A NiMH/NiCD Linear Charger with Termination, Vin = 4.5V to 10V, IOUT = 0.5A/1A/2A $150.00
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Click here to view our complete list of demo boards

Applications

  • Portable Computers, Cellular Phones and PDAs
  • Medical Equipment
  • Charging Docks and Cradles
  • Portable Consumer Electronics

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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