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BULVACK

BULVACK 10 Pack LM2596 DC-DC Buck Converter Step Down Module Power Supply DIP Output 1.25V-30V 3A

    • Based on 803 reviews
Condition: New
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Availability: In Stock.
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Arrives Friday, May 24
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Features

  • Input voltage range: DC 3.2V to 35V (input voltage must be higher than the voltage output to 1.5V or more can not be boosted.)
  • Output: 1.25V to 30V DC voltage is continuously adjustable, high efficiency and maximum output current of 3A.
  • All solid capacitors using SANYO
  • 36u thick circuit boards
  • High-Q inductors with high power output LED indicator

Description

Electrical Parameters:Input: DC 3.2V to 35V (input voltage must be more than the output voltage can not be higher than boost 1.25v.)Output: 1.25V to 30V DC voltage is continuously adjustable, high efficiency and maximum output current of 3A.Features: All solid capacitors using SANYO, 36u thick circuit boards, high-Q inductors with high power output LED indicatorSize: 45 21 13mm / 1.69 0.83 0.51inch (including potentiometers)minimum with locating hole with LED indicator DC-DCInstructions:Access to power (3-35V), adjust the blue potentiometer knob (clockwise rotation generally boost, buck counterclockwise rotation) and with a multimeter to monitor the output voltage reaches the required voltage.Wiring:1. welding, welded directly to the power line input (output) port;2. solder pins, or pins can be inserted through the lead insertion use in tunnel plate; soldered directly to the PCB after another or add pins.Note: The input and output can not be reversed, reverse might burn chips;This is a step-down module, the input voltage is higher than the required output voltage;Output 2A or less long period of time without additional heat sink output current is greater than 2.5A (or output power greater than 10W) to work long hours please add heat sink.Package Included: 10pcs X LM2596S Module

Brand: BULVACK


Color: 10


Item Weight: 4.6 Ounces


Input Voltage: 3.2 Volts


Item Dimensions LxWxH: 1 x 1 x 1 inches


Product Dimensions: 1 x 1 x 1 inches


Item Weight: 4.6 ounces


Item model number: ZT001


Date First Available: August 3, 2019


Manufacturer: Zixtec


Country of Origin: China


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Top Amazon Reviews

    • Useful
Item Package Quantity: 1
I’ve used these to step down voltage to run items off of USB power supplies and other adapters instead of batteries. They seem to work well, although are a bit finicky to adjust. My recommendation is to get a cheap multimeter if you don’t have one and use it to monitor the voltage while you’re adjusting the screw counterclockwise slowly. It takes quite a few turns to see a change if you’re shooting for lower voltage. I’ve used 4 out of the 10 so far with no duds in between. ... show more
Reviewed in the United States on November 18, 2023 by Adam Lange
    • Work as they should
Item Package Quantity: 1
I have used a hand full of these so far and they seem to work as they should. Just a note that the ones I received were adjusted to the max output from the factory. I connected the input to a 13.8 vdc power supply, and that is basically what I had for output on these units until I adjusted them down. So don't think you will wire everything together, turn the power on and adjust the voltage up to what you want. If you do that, something will likely get toasted. ... show more
Reviewed in the United States on October 1, 2023 by R. Hyder
    • Low Power Considerations
Item Package Quantity: 1
Summary: - Drops 14-12v to 6.5v and holds the output at the set point across that range. - This board is cheaper than the switching voltage regulator component alone. - Can it really be an authentic LM2496S - who knows, do we care? - Basic reference circuitry with an adjustable potentiometer - right for more, left for less. -- For fixed applications (like mine) you could nuke that pot and slap in a fixed value resistor. - For low power functionality - delete the LED and 102 (1,000 Ohm) resistor. -- You'll lose the 'on' indicator LED and its companion resistor, but Ohms law doesn't lie. -- Post operation, no load power use dropped from 0.010A to 0.007A - no puns, that's a 30% improvement. - Dodging name brand over pricing. - There are probably better ways to do this, don't be hatin'. Using this device to step down 14-12v to 6.5v to power remote trail cameras with slightly more available 12v deep cycle batteries vs the 6v alternative. Testing on the bench, no-load showed this device was capable of performing as advertised. I don't have a scope so I can't comment on output noise, still chunked a MLCC (better capacitor) on flipside of the board across the existing output cap - it was 'used' so whatever, gave myself an 'E' for low-ESR. - I'll digress. Generally speaking it makes sense from a user/support perspective to go with the manufacturer 'name brand' accessories for these remote units. But I couldn't resist the penny pinching backside of mine to not go DIY on this one - and you'll see why if you choose to hang in here for another paragraph (or so). For a quantity of 10x at this time, these boards are $1.35/each - the LM2596S alone, is $2.50+ component from the component superstores mouser or digi-key. Most likely this is a ghost shift LM2596S, thank you (big semiconductor corp here) for doing business with China and/or letting the design slip, now I'm doing business with them. I only feel slightly guilty, but you're a bunch of penny pinching trolls too so don't even. Now that the ethics, China, and money bag corporation rants are set aside my fiscal justification for going this route: - OEM part (connectors, cable, regulator, and plug) cost $14.99+TAX - This part, some janky-as copper clad aluminum cable, and the wrong sized plugs resulting in a direct connect plus battery spades, cost <$3.00/each. Most likely the OEM did the same thing, but with some ill volume discounts, meaning they're taking your $12 after materials straight to the bank. Keeping my $12, doing this thing - forgot to indicate - yes the battery side will be fused, I don't need a big-as forest fire on my conscience. ... show more
Reviewed in the United States on September 18, 2020 by P!NG
    • Small and work Perfect
Item Package Quantity: 1
As long as they keep working as is, all will be perfect. Very sensitive and easy to adjust. Just keep in mind, if your output voltage is going to be real low, you will have to unscrew the little potentiometer probably More than you think. When I tested the first one I though that is was broken until I kept unscrewing... ... show more
Reviewed in the United States on July 26, 2023 by Dan Nickels
    • Turn the Potentiometer CCW 7-9 Full Turns BEFORE Testing!
Item Package Quantity: 1
I was really skeptical because of the huge number of reviews that said that most, if not all 10 pieces were DOA, no matter how many rotations the reviewer said that they turned the potentiometer. My experience with multi-turn potentiometers is that their range is usually somewhere around 15 turns. I connected a 9VDC power source to the "IN" + & - and my DVOM to the output. At first I placed a 470 ohm resistor across the output, but eliminated it later. At first I turned the screw CW probably 15-20 turns with no change in output voltage. I then began turning the screw on the potentiometer CCW and eventually saw the voltage begin to drop. I ran the screw though a range of 1.25V-5VDC and back a couple times. The voltage held steady (dead on) wherever I left it, even for an extended period (5-10 min). I went through the other nine pieces, but before testing each, I turned the potentiometer on them nine turns counterclockwise. In doing that, I found that some of them were already less than the 9VDC the input voltage. The least number of turns that it took to get a reading less than supply was six (CCW) and the most was ten turns CCW with one exception. One of the pieces had to be turned probably 20-25 turns CCW before the voltage dropped from the input voltage. I bought these to use in projects using components like the ESP88266 and Nokia 5110 LCD which recommend 3.3VDC for power and inputs. I think that they should work fine in these applications. ... show more
Reviewed in the United States on March 13, 2022 by T. K. Lowell
    • Buyer Beware
Item Package Quantity: 1
Review Image by Nate Nate
First thing first... This is absolutely my fault... While connecting this Buck Converter to a DC power jack I mistakenly wired the POS (+) and NEG (-) backwards and blew it up (see the picture). There is absolutely no reverse polarity protection for this Buck Converter. The first thing that went was the LM2596S IC voltage regulator, then the first capacitor, both blew in a spectacular manner shooting pieces all over my room (well, not ALL over, but pieces did fly, you understand). Value for the money? Absolutely worth every penny, so why did I give it 4 stars? For the simple fact that if you aren't paying attention when soldering it together you may end up with metal fragments in your eyes and everyone makes mistakes every now and then. While I understand this is my fault, this is also a safety issue because these pieces literally blow apart (the capacitor even leaves a smell behind) if they are wired incorrectly. Everyone makes mistakes, I don't think it would be that difficult to add a diode to limit the flow of current to one direction, then again, that's why I'm not making these and selling them. ... show more
Reviewed in the United States on April 7, 2021 by Nate Nate

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