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

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

Q: Will v-out stay stable w/ a changing v-in? for instance 14v in and set for 3 v out but over time input (battery) drops to 11v.

I haven't monitored the Output Voltage vs. Input Voltage change, but I have noticed that the output tends to drift down as the output current increases. I haven't seen it drop below the 2.5% allowed in the spec, though, and I have drawn as much as 2.3 Amps.

Q: Is there any delay when supplying voltage till output is sent?

Output voltage begins to ramp up within a few micro seconds (usec) of applying input voltage but it takes a few hundred usec to reach full output voltage. The time to achieve full output depends on both the input and output voltage. I was curious so I measured a few cases. The times to reach full output voltage with a 470 Ohm load were: 10.0V in, 5.0V out: 288 usec 20.0V in, 5.0V out: 304 usec 20.0V in, 15.0V out: 570 usec 30.0V in, 15.0V out: 572 usec 30.0V in, 25.0V out: 662 usec Cheers

Q: I don't understand the limitations. Can it be used to bring 5V down to 3V?

It absolutely can. I have used these to convert my 12V supply into both 5V and 3.3V

Q: At 12 volts input and (say) 5 volts output, what is the quiescent (no-load) current on the 12 volt side? Thanks!

On my regulators the no load input current for 12V in 5V out is 7.8 mA with the output indicator LED installed. With the LED, the no-load current depends strongly on output voltage rising to 23 mA at 11V output. With the LED removed the no load input current at 12 V in 5 V out is 6.0 mA. Without the LED is independent of output voltage.

Product ID: 383534608

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Details

Brand
BULVACK
Power source
Corded
Mounting type
PCB Mount
Current rating
3 Amps
Item weight
4.6 Ounces

⚡3.2V-35V input range

🔥3A max output current

🔧1.25V-30V adjustable output

Description

🔋 Power your innovation with precision and reliability!

BULK PACK ADVANTAGE - 10-pack bundle ensures you’re always ready for multiple projects or rapid prototyping—never run out of power modules again.
COMPACT VERSATILE - Small 45x21x13mm footprint fits seamlessly into any DIY or professional setup, with easy mounting holes and LED status indicator.
PREMIUM BUILD QUALITY - Equipped with all-solid SANYO capacitors and high-Q inductors on thick 36u circuit boards for durability and efficiency.
ROBUST POWER HANDLING - Supports up to 3A output current, perfect for demanding projects without overheating (add heat sink for >2.5A).
PRECISION VOLTAGE CONTROL - Continuously adjustable output from 1.25V to 30V lets you tailor power delivery with millivolt accuracy.

The BULVACK 10 Pack LM2596 DC-DC Buck Converter modules deliver a wide input voltage range (3.2V-35V) and a finely adjustable output voltage (1.25V-30V) with up to 3A current capacity. Built with premium SANYO solid capacitors and high-Q inductors on thick circuit boards, these compact modules ensure efficient, stable power conversion for professional-grade electronics projects. Ideal for engineers and makers who demand reliability and flexibility in bulk.

Have a Question? See What Others Asked

Will v-out stay stable w/ a changing v-in? for instance 14v in and set for 3 v out but over time input (battery) drops to 11v.

Is there any delay when supplying voltage till output is sent?

I don't understand the limitations. Can it be used to bring 5V down to 3V?

At 12 volts input and (say) 5 volts output, what is the quiescent (no-load) current on the 12 volt side? Thanks!

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