You can find the HW-133 v1.0 module at retailers like AliExpress , All Mart , or U-Electronics .
As a step-down (buck) converter, the input voltage must always be higher than the target output voltage (e.g., a 12V input is recommended for a stable 5V output). Summary Table: HW-133-v1.0 vs. LM2596 Hw-133-v1.0 Datasheet
: Consumes roughly 75% less idle current than LM2596 modules. You can find the HW-133 v1
The datasheet for HW-133 is distinct from the official L298N chip datasheet. The chip datasheet talks about internal transistors and logic gates; the HW-133 datasheet tells you how to not burn your house down while plugging it into an Arduino. LM2596 : Consumes roughly 75% less idle current
For technical deep-dives into the underlying silicon, you can refer to the MP1584 Power Converter Datasheet provided by Monolithic Power Systems. for your specific project or a wiring diagram for a specific microcontroller?