5A XL4015 XL4005 DC-DC Step Down Adjustable Power Supply Module LED Lithium Charger LM2596-based DC-DC module claims to be 3.0A, but only 1.8A. However, the module is being introduced to add a heat sink, using a high-power device. The module can easily reach 4A, 50W, plus the case of the radiator can reach 75W, the price is high! Module Highlights: 5A High Power, High Efficiency and Low Ripple Power Indication! In the case of 1. Input voltage range: 4 ~ 38VDC (Note: the input voltage does not exceed 38V) 2. Output voltage range: 1.25-36VDC adjustable 3. Output current: 0-5A, recommended for 4.5A. 4. Output power: 75W Operating temperature: -40 ~ +85 degrees Operating frequency: 180KHz 7.Efficiency: 96% (max) 8. Short circuit protection: Yes (current limit 8A). 9. Over temperature protection 10. Input Reverse Polarity Protection: None (if required, in series with the input of the high current diode). 11.L W H = 54 * 23 * 18mm In the case of application: In the case of DC / DC buck module application input voltage higher than the buck field output voltage, such as battery, power transformer, DIY adjustable power supply, 24V car notebook power supply, industrial equipment buck.12V down to 3.3V, 12V buck To 5V, 24V buck to 5V, 24V buck to 12V, 36V buck to 24V and so on