USB step-down module (LM2596, XL4015, HW-688)
HW-688 buck · in 9–36 V · fixed 5.2 V USB output · 5 A (25 W) · over-current and over-temperature protection
Try it on the benchThe lab drops it on an empty bench and opens its datasheet card.
Pins
- IN+
- IN−
- 5V
- GND
- USB-A port (5 V out)
Lessons and builds that use it
- 12 V → 5 V regulators
- Charging a phone from 12 V with an HW-688
- I²C scanner
- 16×2 I²C LCD
- Phone charging: volts, amps and watts
- 200 Ah power station from four 3.2 V prismatic LiFePO4 cells: 4S BMS, 2 × 12 V, 3 × USB, mains charger (build)
- 200 Ah power station on a 12.8 V LiFePO4 battery: 2 × 12 V, 3 × USB, mains charger (build)