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The LM2576 series of regulators are monolithic
integrated circuits that provide all the active functions
for a step-down (buck) switching regulator, capable of
driving 3-A load with excellent line and load
regulation. These devices are available in fixed output
voltages of 3.3 V, 5 V, 12 V, 15 V, and an adjustable
output version.
Requiring a minimum number of external
components, these regulators are simple to use and
include fault protection and a fixed-frequency
oscillator.
The LM2576 series offers a high-efficiency
replacement for popular three-terminal linear
regulators. It substantially reduces the size of the
heat sink, and in some cases no heat sink is
required.
A standard series of inductors optimized for use with
the LM2576 are available from several different
manufacturers. This feature greatly simplifies the
design of switch-mode power supplies.
Other features include a ±4% tolerance on output
voltage within specified input voltages and output
load conditions, and ±10% on the oscillator
frequency. External shutdown is included, featuring
50-μA (typical) standby current. The output switch
includes cycle-by-cycle current limiting, as well as
thermal shutdown for full protection under fault
conditions.

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25 COMMENTS

  1. DINESH KUCHA Posted on July 7, 2020 at 2:57 am

    12v se 5v capacitor 470uf volt.?? 220uf volt kitna pl capacitor ka volt bataeye …..

    Reply
  2. Mohit Rathore 2 Posted on July 7, 2020 at 2:57 am

    Ic ka price kya hai

    Reply
  3. Mahesh Ralotiya Posted on July 7, 2020 at 2:57 am

    54v dc par ye converter jal jata hai kam nhi karta hi

    Reply
  4. Raju Pal Posted on July 7, 2020 at 2:57 am

    सर मोबाइल चार्ज वोल्टेज ज्यादा तो नही होगा और हिटसि

    Reply
  5. Shrey Gandhi Posted on July 7, 2020 at 2:57 am

    Please explain how have you selected values for the Caps and Inductor. The math behind it.

    Reply
  6. Technical Experts Posted on July 7, 2020 at 2:57 am

    78xx aur 79xx LM3x7 ki video mai nay abhi upload ki hay. Check karain

    Reply
  7. Ramu Acharya Posted on July 7, 2020 at 2:57 am

    Sir kay inductor lagana jaruri hey???
    Inductor ka kam केया हे

    Reply
  8. Tapas Manna Posted on July 7, 2020 at 2:57 am

    68uh inductor kitna amp hoga

    Reply
  9. Tapas Manna Posted on July 7, 2020 at 2:57 am

    Guruji aapka 68uh inductor kitna amp se kekar kitna amp Tak laga saktahu?

    Reply
  10. Jaspreet Singh Posted on July 7, 2020 at 2:57 am

    Can u provide me circuit for variable input viltage from 50v to 120 v dc and fixed output of 12 v or 24 volt or 36 volt any of them. Total 2000 circuits required. Contact me at jsbmatrix@gmail.com

    Reply
  11. Nadeem Warris Posted on July 7, 2020 at 2:57 am

    Excellent

    Reply
  12. Shakil Khan Posted on July 7, 2020 at 2:57 am

    Praveen Sir agr source voltage ka ampere 500 Mili Ampere ho to kya yeh circuit properly work krega. Aur kya ye out put me 3 ampere dega, Please tell me sir,
    Thank you.

    Reply
  13. Newton Singh Posted on July 7, 2020 at 2:57 am

    Can we use two circuit in series to work on 120v dc input
    And 2 different output
    ? Please answer

    Reply
  14. fahim uddin Posted on July 7, 2020 at 2:57 am

    sir ic me Heatsink lagana he ya nahi?

    Reply
  15. fahim uddin Posted on July 7, 2020 at 2:57 am

    sir ye ic 24 volt ka bhi aata he kya?

    Reply
  16. Jayant Paul Posted on July 7, 2020 at 2:57 am

    Can we use adjustable amp with this circuit….please tell us how to make this….. Amp adjustable..

    Reply
  17. Jayant Paul Posted on July 7, 2020 at 2:57 am

    Can i use 100uh Inductor instead of 68uh…?

    Reply
  18. something creative Posted on July 7, 2020 at 2:57 am

    sir can we use it as a power bank for mobile

    Reply
  19. Silva Charles Posted on July 7, 2020 at 2:57 am

    nice video . the only doubt is to know if it regulates the output voltage when the input voltage decrease …. does it regulates or not ? it must be a CONVERTER NOT A REGULATOR .
    but is a nice video any way thanks .

    Reply
  20. yogesh kumar Posted on July 7, 2020 at 2:57 am

    2576 hai ya 2596 .
    ..confused

    Reply
  21. Partha Banerjee Posted on July 7, 2020 at 2:57 am

    Using 0-12 , 3amp and Rs401L diode bridge I get 21volt unloaded output . can I use it in 4440 double IC board?please reply me as soon as possible

    Reply
  22. ragam vgr Posted on July 7, 2020 at 2:57 am

    thank you praveen

    Reply
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