LM2596HVS Adjustable Step-Down Buck Converter Module – 4.5-53V Input, 3-40V Output, 3A

The LM2596HVS is a non-isolated DC-DC step-down (buck) switching regulator module designed to reduce a higher DC input voltage to a lower, adjustable output while maintaining high efficiency and stable regulation. It accepts an input range of 4.5V to 53V DC and provides an adjustable output from 3.0V to 40V DC, with the input required to be at least 1.5V higher than the output. Output voltage is set with an on-board multi-turn potentiometer, allowing precise selection for a wide range of loads. The module is rated for a nominal 2A continuous output with a 3A maximum, and a heatsink is recommended when operating near the upper current limit. Conversion efficiency reaches up to 92%, output ripple is below 30 mV, and both voltage and load regulation are specified at 0.5%, with a dynamic response of 5% in 200 µs. Switching frequency is fixed at 150 kHz, and an SS36 Schottky diode provides circuit protection. The board operates from -40°C to +85°C, measures 43 × 21 × 14 mm, and uses IN+/IN− input terminals and OUT+/OUT− output terminals. Suitable output power is up to 10W. This LM2596HVS buck converter module is well suited to adjustable power supplies, automotive accessories, CCTV and monitor power, telecom boards, DIY power banks, and laboratory projects.

1. Adjustable bench and project power supplies.
2. Stable voltage supply for automotive systems and vehicle accessories.
3. Powering CCTV cameras and monitoring equipment.
4. Telecom boards and low-power communication equipment.
5. DIY power banks and rechargeable battery projects.
6. Voltage reduction in DIY, laboratory, and industrial prototyping setups.

1. Model: LM2596HVS.
2. Converter type: non-isolated DC-DC step-down (buck) switching regulator.
3. Input voltage: 4.5V to 53V DC.
4. Output voltage: adjustable 3.0V to 40V DC.
5. Minimum input-to-output differential: 1.5V.
6. Output current: nominal 2A, maximum 3A (heatsink required near maximum).
7. Conversion efficiency: up to 92%.
8. Output ripple: less than 30 mV.
9. Voltage regulation: 0.5%.
10. Load regulation: 0.5%.
11. Dynamic response: 5% in 200 µs.
12. Switching frequency: 150 kHz.
13. Protection diode: SS36.
14. Suitable output power: up to 10W.
15. Operating temperature: -40°C to +85°C.
16. Terminals: IN+ and IN− input; OUT+ and OUT− output.
17. Voltage adjustment: on-board multi-turn potentiometer.
18. Dimensions: 43 × 21 × 14 mm.