Hw-133-v1.0 Datasheet Jun 2026
: Some users have reported that input voltages above 24V (despite the 28V rating) can cause instability or failure if the output is under heavy load. Trimpot Adjustments
Based on variant specifications, the HW-133 adapters support:
The HW-133-V1.0 is engineered with a simple, four-pad layout designed for either direct wire soldering or standard 2.54mm pin headers. Connection Pads
terminals and turn the potentiometer clockwise to increase or counter-clockwise to decrease the voltage to your target (e.g., 3.3V or 5V). Safety Precautions Hw-133-v1.0 Datasheet
Operating at up to 1.5 MHz allows the board to utilize a much smaller inductor and ceramic capacitors than lower-frequency modules (like the LM2596). This minimizes output ripple voltage to less than 30mV, making it clean enough for noise-sensitive microcontrollers and sensors. Potentiometer Voltage Adjustment
Understanding the technical limits of the MP1584 module is critical for reliable circuit design. Specification 4.5V - 28V 12V or 24V sources recommended. Output Voltage 0.8V - 20V Adjustable via potentiometer. Output Current 1.8A (Typ), 3A (Max) >2A requires heat sinking. Conversion Efficiency Varies based on input/output ratio. Ripple Voltage Switching Freq. 1MHz - 1.5MHz Allows for smaller inductor. Size 22mm × 17mm × 4mm Extremely small. 3. Pinout and Connection Diagram
The is an ultra-small, highly efficient DC-DC step-down (buck) voltage regulator module widely used in robotics, embedded systems, and hobbyist electronics. Built on the high-frequency Monolithic Power Systems (MPS) MP1584EN buck converter IC , this miniature module converts a higher direct-current input voltage into a stable, lower output voltage. It serves as a modern, high-efficiency replacement for bulky, older linear regulators and larger buck converter boards. Core Specifications Overview : Some users have reported that input voltages
Where the "HW-133" naming convention appears across various electronics, the "v1.0" suffix specifically refers to a well-established, widely available variant based on the switching regulator IC. It is not to be confused with the Xilinx family of programming adapters (e.g., HW-133-PC44), which are entirely different devices. This guide focuses solely on the power converter module.
const int DIGITAL_PIN = 2; // DO pin const int ANALOG_PIN = A0; // AO pin
). This reduces physical space without sacrificing voltage stability or risking structural output ripple. Control & Tuning Mechanism Safety Precautions Operating at up to 1
The Hw-133-v1.0 datasheet is a detailed document that covers various aspects of the component, including:
Measure the voltage across OUT+ and OUT- using a digital multimeter.
: It operates at a switching frequency of 150 kHz , allowing for smaller filter components and an efficiency rate generally between 80% and 92% depending on the voltage differential. Common Use Cases
The HW-133-PC44 variant provides the following technical specifications:
Do not connect your target hardware (e.g., microcontrollers, sensors) until verifying output metrics.