DC-DC step down power module features:

• Product: Non-isolated DC-DC step down module, (Require input voltage higher than output voltage)
• Input voltage: 4.5-40V (MAX)
• Output voltage: 1.25-35V continuously adjustable
  
• Output current: 0-10A
• Operating temperature: -40 ~ +85 degree centigrade
• Operating frequency: 300KHz
• Conversion efficiency: up to 95%
• Short circuit protection: Yes (limit current 10A)
• Overtemperature protection: Yes(over-temperature automatically turn off the output)
• Input reverse polarity protection: no, can connect diode at input side as a protection way
• Wiring method: terminal, free welding,
• Module size: 60 * 51 * 22mm

Applications:

• DIY An adjustable output power supply.
• Universal On-board laptop power supply. Input 24V power supply, the output adjusted to the notebook voltage (20,19,18.5,16,15 V and other voltage) to work.
• Step-down charging, you can use 24V power supply power for less than 24V battery
• Supply power for your electronic equip