مخطط الأطراف
مخطط أطراف وحدة محوّل خافض LM2596
الأطراف
- IN+ / IN− (4.5–40V DC in)
- OUT+ / OUT− (1.25–37V out, always below Vin by ≥1.5V)
- Multi-turn pot sets the output — screw counter-clockwise to lower it, and SET IT BEFORE wiring the load
- ~2A continuous (3A peak with a heatsink); efficiency ~80–90%
المواصفات
| Converter IC | LM2596 (step-down switching regulator) |
|---|---|
| Input voltage | 4.5–40 V |
| Output voltage | 1.23–37 V adjustable (needs ≈ 1.5 V or more of headroom) |
| Output current | IC rated 3 A; ≈ 2 A continuous on a typical module without extra heatsinking |
| Switching frequency | 150 kHz |
| Efficiency | ≈ 80–90% depending on input/output voltages and load |
| Quiescent current | ≈ 5 mA typ (IC) |
| Protection | Current limit and thermal shutdown (IC) |
| Adjustment | Multi-turn trimmer potentiometer |
