ZK-J3X 3A Adjustable CC CV Step-Down Buck Converter with LCD

The ZK-J3X 3A Adjustable Step-Down Module is a highly versatile and precise DC-DC buck converter equipped with an integrated LCD display. It allows you to step down a higher input voltage to a lower, stable output voltage while providing fine control over both constant current (CC) and constant voltage (CV). This makes it an invaluable tool for electronics testing, battery charging, and prototyping, giving you bench-power-supply capabilities in a compact form factor.

Ideal for makers and engineers, this module can be powered via standard screw terminals or a DC 5.5mm barrel jack. It seamlessly drives LED arrays, charges lithium batteries, and powers IoT microcontrollers like Arduino and ESP32. The onboard LCD screen provides real-time monitoring of input/output voltage, load current, power, and accumulated capacity (Ah), eliminating the need for external multimeters during project debugging.

Features:

• Wide Input Range: Accepts 5V to 27V DC via screw terminals or DC 5.5mm jack.
• Adjustable Output: Precisely tune the output voltage from 1V to 24V DC using the onboard potentiometer.
• CC/CV Control: Deliver up to 3A of current with adjustable constant current and constant voltage settings for safe battery charging and LED driving.
• Multifunctional LCD: Clearly displays voltage, current, power (W), and capacity (Ah) with intuitive push-button navigation.
• Integrated USB Port: Features a USB female output (Note: The USB output voltage matches the terminal voltage and is not fixed at 5V).
• Protective Enclosure: Comes with a clear acrylic case and heavy-duty heat sink for improved thermal dissipation and durability.

Package Includes:

1 x ZK-J3X 3A Adjustable CC CV Step-Down Buck Converter with LCD