DC 9A 280W Step Down Buck Converter 7-40V To 1.2-35V Power Module LED Driver
Review: 5 - "A masterpiece of literature" by John Doe, written onMay 4, 20020

DC 9A 280W Step Down Buck Converter 7-40V To 1.2-35V Power Module LED Driver

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  • Product SKU: KG509
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The DC 9A 280W Step-Down Buck Converter is an electronic module used to convert a higher input voltage (in the range of 7-40V) to a lower and adjustable output voltage (in the range of 1.2-35V). This type of module is commonly used in various electronics and power supply applications, including LED drivers and voltage regulation circuits.

Here are some key features and uses of this module:

Input Voltage Range: The module can accept input voltages between 7V and 40V DC.

Output Voltage Range: It can provide an adjustable output voltage in the range of 1.2V to 35V DC, making it versatile for a wide range of applications.

Current Rating: The module is rated to deliver a maximum output current of 9A, which is essential for powering high-current devices like LEDs or other electronic components.

Efficiency: Buck converters are known for their high efficiency in voltage conversion, which means they waste less energy in the form of heat compared to linear regulators.

Adjustable Output: You can typically adjust the output voltage using a potentiometer or a voltage reference circuit, allowing you to customize the voltage to meet the requirements of your specific application.

Common Uses:

LED Driver: This module is often used as an LED driver to power high-power LEDs in various lighting applications, such as automotive lighting, home lighting, and industrial lighting.

Voltage Regulation: It can be used to regulate and stabilize voltage levels in power supplies for electronic circuits and devices.

Battery Charging: Buck converters are used in battery charging circuits to efficiently charge batteries from a higher input voltage source.

Power Supply for Electronics: You can use this module to power a wide range of electronic devices and projects, especially when you need a stable and adjustable power source.

Solar Power Systems: In solar power systems, these converters can be used to regulate the voltage from solar panels to charge batteries or power electronic devices.

Automotive Applications: It can also be employed in automotive applications to provide a stable power source for various components in a vehicle.

Technical Details 

  • Input voltage 7-40V (without constant 5-40V)
  • The output voltage (1.2-35V)
  • Maximum output current 9A
  • Maximum power 280W
  • Frequency 180KHZ
  • Output Power: Maximum power is about 280W
  • Power tube temperature exceeds 65°C please add a cooling fan


  • Fixed turn lamp current is 0.1 times the current value ( Used to identify whether the battery is fully charged When charging).
  • Made from a dedicated benchmark IC and high-precision current sensing resistor, proving a more stable constant current, (when 20° to 100° constant current 1A, temperature drift less than 1%). Particularly suitable for LED drivers.
  • High output current, the max output current can reach 12A.
  • Four high-frequency capacitance, can lower output ripple, and enhance the work stabilization.

Physical Attributes

  • Length * Width * Height  (mm) : 65 * 48 * 25 mm
  • Weight (gm): 68

Product Video

Package Includes

  • 1 x DC 9A 280W Step Down Buck Converter 7-40V To 1.2-35V Power module LED Driver

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