HLK PM03 Hi-Link 3.3V 3W AC to DC Power Supply Module

HLK PM03 Hi-Link 3.3V 3W AC to DC Power Supply Module 

The HLK-PM03 from Hi-Link is a compact AC-to-DC switching power supply module that converts standard mains AC voltage into a regulated 3.3 V DC output with up to 3 W of power. It integrates the switching regulator, isolation transformer, and protection circuitry into a single, PCB-mountable module. This makes it an easy, space-efficient choice for powering low-voltage digital electronics and microcontroller systems directly from AC mains without needing a bulky external adapter.

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Features

• Wide AC input range — works with typical mains voltages
• Regulated 3.3 V DC output — ideal for modern low-voltage digital circuits
• Up to 3 W output power — suitable for small embedded systems
• Compact PCB mount module — saves space in designs
• High efficiency — low heat and energy loss
• Low ripple and noise — clean enough for many digital and analog circuits
• Built-in protections — safeguards against overload and short conditions
• Isolation between AC input and DC output — measures safety into low-voltage side
• Easy to use — simple input/output pins for fast integration

Applications

• Embedded and IoT systems powered directly from AC mains
• 3.3 V microcontroller and digital logic power supply
• Low-power sensor and communication modules
• Smart home control units
• Consumer electronics requiring 3.3 V DC
• PCB designs with limited space for external adapters
• Industrial control logic power feed