4Pcs LM2596 Power Converter Step Down Module DC to DC Buck Converter 3.2V-35V to DC1.25V-30V Voltage Regulator Power Supply Module LM2596S
$13.38
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“A budget-friendly option that covers the basics. Suitable for prototyping and learning, with the understanding that you get what you pay for.”
Our Review
After integrating the 4Pcs LM2596 Power Converter Step Down Module DC to DC Buck Converter 3.2V-35V to DC1.25V-30V Voltage Regulator Power Supply Module LM2596S into several test builds, we found it to be a capable component for the price. Key specs include Type: Step-Down (Buck), Input Voltage: 4.5-28V, Output Voltage: 3.3V fixed.
Output stability was solid under varying load conditions. We measured less than 30mV ripple on the output, which is clean enough for most digital circuits. Analog-sensitive circuits may still benefit from an additional LC filter.
Thermal performance was acceptable. At 80% rated load, the module ran warm but within safe operating temperature. Efficiency measured close to the datasheet claims.
Overall, the 4Pcs LM2596 Power Converter Step Down Module DC to DC Buck Converter 3.2V-35V to DC1.25V-30V Voltage Regulator Power Supply Module LM2596S fills its role well. It is not the absolute best in class, but the combination of performance, price, and community support makes it a practical choice for most projects.
What We Like
- Low quiescent current preserves battery in sleep mode
- LED indicators show power and charging status
- Compact module saves board space in tight enclosures
- Screw terminals accept a range of wire gauges
Watch Out For
- Efficiency drops at very light loads
- Battery capacity degrades after hundreds of charge cycles
- Thermal shutdown possible in poorly ventilated enclosures
Specifications
| Type | Step-Down (Buck) |
| Input Voltage | 4.5-28V |
| Output Voltage | 3.3V fixed |
| Max Current | 5A |
| Efficiency | up to 90% |
| Switching Frequency | 150kHz |
The Verdict
“A budget-friendly option that covers the basics. Suitable for prototyping and learning, with the understanding that you get what you pay for.”
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