Cheap and best 12V/24V to 3.3V, 5V or 6V converters are step down DC-DC converters, which adopted synchronous rectification technology, with high efficiency 89%~95%, optimized for low-power applications.

Note*: Get a special 15% off when you purchase the 3A/4A/5A DC-DC buck converter. The prices shown on this page already reflect the discount.

Features

• Wide input voltage range: 8V to 36V or 8V to 40V.
• Brand-new, die-cast aluminum shell and high quality design, maximum transfer efficiency of 95%.
• This step down power module comes with waterproof lever of IP68, moisture-proof & anti-shock protection.
• Auto-recovery when device is back to normal operating.
• Built-in full protection against over/under voltage input, over-current, overload, over-temperature and short circuit.
• Industry grade DC 12V/24V to 3.3V/5V/6V buck converter, widely used in automotive, electricity, surveillance systems, railway signals, instruments, solar generate electricity, display screen of bus and taxi, car audio device, security systems, hospital equipment, telecommunications etc.

40A/10A DC-DC Buck Converter Specification

12V/24V to 5V/ 6V DC-DC Buck Converter Model Selection

Note: Models marked in red are available at a 15% discount.

12V/24V to 3.3V DC-DC Buck Converter Model Selection

Note: The series of 12V/24V to 3.3V/5V/6V DC-DC buck converter models are all here, check the parameter carefully from the table and select the right converter power supply when place the order.

3.3V DC Power Supply Applications

KOLAUT DC-DC buck converter can step down 12V/24V DC to 3.3V DC voltage. 3.3V DC power supply plays a vital role in modern electronic equipment and systems and is widely used in many fields, from embedded systems to Mobile devices, from communication devices to electronic toys and sensors. Its low power consumption, high performance and safety make it the power solution of choice for many design engineers.

• Embedded systems: Many embedded systems, such as microcontrollers (MCUs), microprocessors (MPUs), and microcontrollers (such as Arduino and Raspberry Pi), usually require a 3.3V DC power supply. These systems are widely used in various industrial automation, smart homes, medical equipment and consumer electronics products due to their low power consumption and high performance.
• Electronic equipment: Digital circuits and logic circuits often rely on 3.3V power supplies to ensure stable operation. For example, many integrated circuits (ICs), memory chips (such as EEPROM and flash memory) and other semiconductor devices use 3.3V as the operating voltage. In addition, display driver circuits and audio processors may also require this voltage.
• Mobile devices: Mobile devices such as smartphones, tablets, and wearable devices (such as smart watches and fitness trackers) often use 3.3V power supplies due to their small size, versatile functions, and portability. This low voltage helps extend battery life and reduces heat generation.
• Communications equipment: Wireless communication modules (such as Wi-Fi modules, Bluetooth modules, Zigbee modules, etc.) usually use 3.3V power supply. These modules are used to connect and transmit data, and are especially important in Internet of Things (IoT) devices. In addition, many network equipment and certain subsystems of communication base stations also use 3.3V power supply.
• Electronic toys and educational tools: Many electronic toys and educational tools (such as STEM education kits, robotics kits, and programming learning tools) also rely on 3.3V power supplies. These devices must not only ensure security, but also provide sufficient functionality and interactivity with low power consumption.
• Sensors & actuators: Many sensors (such as temperature sensors, humidity sensors, pressure sensors) and actuators (such as servos, DC motors) use 3.3V power supply. These sensors and actuators are widely used in fields such as automatic control systems, environmental monitoring systems, and smart agriculture.

Tips: What is a DC-DC buck converter?

A DC-DC step down converter is an electronic device used to convert a direct current (DC) input voltage to a lower output voltage. It reduces the input voltage to the required output voltage level by controlling the switching state of switching elements (such as transistors) and using components such as inductors and capacitors. Buck converters are usually used to convert high-voltage power sources (such as batteries, power grids, etc.) into lower voltages to supply electronic devices that require lower voltages, such as mobile devices, embedded systems, communication equipment, etc. The working principle of this converter is based on the energy storage and release of the inductor, and the stability and efficiency of the output voltage are controlled by periodically adjusting the on-time and off-time of the switching element.