Ni-MH battery charger using LT4060

john September 24, 2009 18 Comments

Description.

This is the circuit diagram of a very powerful and efficient Ni-MH battery charger using IC LT4060 from Linear Technologies. In addition to Ni-MH batteries Ni-Cd batteries can be also charged by slightly modifying the circuit.For charging Ni-Cd batteries connect the CHEM pin (pin12) of the IC to +Vcc.Here the circuit is configured to charge 2 cells connected in series. By altering the connections of SEL0 and SEL1 pins, upto 4 batteries in series can be charged using this circuit. For charging a  single cell, connect SEL0 and SEL1 pins to GND. For charging two cells, connect SEL1 to GND and SEL0 to Vcc. For charging  three cells,  connect SEL1 to VCC and SEL0 to GND. For charging 4 cells, connect SEL0 and SEL1 pins to VCC. The circuit also features temperature based charge qualification.An NTC thermistor connected at the NTC pin (pin11) of the IC serves as the temperature sensor.

Circuit diagram.

Ni-MH battery charger circuit

Notes.

  • The circuit can be assembled on a Vero board.
  • Mount the IC on a holder.
  • Preset R2 must be set around 4K.
  • Type no of Q1 is not very critical. Any 3 to 5A PNP transistor will do the purpose.
  • LED D1 serves as  a charge indicator.

Comments
  • Dimitry
    August 29, 2015

    Yes I found it as part no. LTC4060

  • Achira
    July 11, 2013

    can i charge 12v NI-MH battery pack using it?

    • Seetharaman
      July 12, 2013

      Hi No this cannot be used as the supply itself is only 5volts. This IC can handle between 4.5 to 10 volt only.

  • Jim
    November 4, 2012

    Can’t find LT4060 anywhere.

  • rohit
    October 15, 2011

    Hello Seetharaman,

    Thanks for the TIP !!

    regards

  • seetharaman
    October 12, 2011

    Hi Rohit you require an external ballast, you can use a 20 watt flurescent light ballast for this lamp as it has got its own built in starter. electronic balast for 2 pin 11watts available but i have not seen any for other rating in the market.

  • rohit
    October 11, 2011

    Hello Seetharaman,

    Any suggestion on the above CFL image,

    Thanks for your advice

  • rohit
    October 6, 2011

    Hello Seetharaman,

    I added a image of the CFL light, as you can see it does not have a driver or a ballast attached, hence iam requesting your help.

    Kindly advice
    http://imageshack.us/photo/my-images/14/26wc.jpg/

  • Seetharaman
    October 5, 2011

    Hi Rohit you donot require any ballast for these CFLs as they are with built in electronic switching supply to take care of 170 to 270 volts AC.

  • rohit
    October 3, 2011

    Hello Seetharaman,

    Can you help me with a circuit diagram for a 26 watt CFL, single pins (only two pins on the 26 watt CFL). I picked up some CFL’s and I found i cannot find ballast in india for these.
    Thanks and regards

  • KEYBAL
    February 9, 2011

    thank you sir SEETHARAMAN. I’m searching for the circuit of 20w flourescent lamp electronic ballast. hoping for your reply. soon!

  • Seetharaman
    October 21, 2010

    Hi Keybal you can go through the datasheet and try to devolop the application
    http://cds.linear.com/docs/Datasheet/4060f.pdf

  • KEYBAL
    October 20, 2010

    what ic can be substitute for LT4060? I NEED REPLY SOON!

  • KEYBAL
    October 20, 2010

    IS LT4060 IC STANDARD?

    • Dimitry
      August 29, 2015

      look for LTC4060

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