HLK-PM03 230V to 3.3V Step-Down Converter

With this step-down converter, you can transform 230V alternating current to 3.3V DC. This voltage converter with rectification and voltage regulator is suitable for powering 3.3V microcontrollers from 90 to 264V AC.

Warning:

Working with 230V voltages is dangerous and can lead to fatal accidents. The module should only be used by professionals. We assume no liability for incorrect use of the device.

Features:

• Compact design
• Wide input voltage range from 90V to 264V AC
• With overload and short-circuit protection on the output
• Low no-load loss power of only <0.1W

Interesting links for operating a 3.3V microcontroller at 230V:

• https://randomnerdtutorials.com/esp8266-hi-link-hlk-pm03/
• https://randomnerdtutorials.com/hack-pir-motion-sensor-esp8266-hlk-pm03/

Technical Details: 

• UL and CE certified
• Input voltage: 90 to 264V AC
• Output Voltage: 3.3V DC
• Output current: 900mA
• Power: 3W
• No-load loss power: <0.1W 
• Overload and short-circuit protection on the output
• Operating temperature: -20°C to +60°C
• Efficiency at 230V: >70%
• Accuracy at 3.3V: +/- 0.1V
• Dimensions: 34 x 20 x 15mm
• Weight: 19g

Scope of delivery:

• 1x HLK-PM03 230V to 3.3V Step-Down Converter