Step-down converter (LM2596, XL4015, HW-688)
LM2596 buck module · in 4.5–40 V · out 5.00 V · 3 A max
Try it on the benchThe lab drops it on an empty bench and opens its datasheet card.
Typical part: LM2596 module
Pins
- IN+
- IN−
- OUT+
- OUT−
Ratings and limits
| Input | 4.5–40 V |
|---|---|
| Output | 1.25–37 V adjustable |
| Current | 3 A max (2 A without heatsink) |
How to use it
Efficient step-down from 12–24 V to 5 V for microcontrollers and USB.
Lessons and builds that use it
- 12 V → 5 V regulators
- Send an SMS with the A7670 LTE module
- Capstone: solar-powered GPS tracker
- LDO vs buck: choosing a 3.3 V rail
- Solar phone charger (build)