Reports from electronics hobbyist communities suggest the HW-133 is a superior alternative to the common LM2596 buck converter for battery-powered applications:
Thanks to its diminutive footprint and high efficiency, the HW-133-V1.0 module is commonly deployed in: Hw-133-v1.0 Datasheet
High-frequency multilayer ceramic capacitors placed across both input and output rails. These suppress voltage ripples and protect downstream devices from harmonic noise. Thermal Management Guidelines While the module is rated for a peak current of Hw-133-v1.0 Datasheet
higher than the desired output voltage to maintain stable regulation. Application Scenarios Hw-133-v1.0 Datasheet
Accepts unregulated positive DC voltage from your power source (
Automatically turns off if the chip exceeds safe temperatures.