L7805 LM7805 Step Down Converter 7.5V-35V to 5V Regulator Power Supply Module

The L7805 / LM7805 step-down regulator module is a compact 5V power supply board designed to convert a higher input voltage into a stable 5V DC output for microcontrollers and DIY electronics. It is based on the popular 7805 linear regulator and includes onboard filtering capacitors, a power indicator LED, and screw terminals for quick wiring.

This module is ideal for powering Arduino, sensors, small relay modules, and other 5V circuits from 7.5V–35V input (recommended lower input voltage for reduced heating). Some module versions include an onboard rectifier that may allow AC input / polarity-insensitive input—please verify using the PCB markings before use.

• Input Voltage Range: 7.5V–35V (recommended 7.5V–20V for best thermal performance)
• Output Voltage: 5V DC (fixed)
• Maximum Output Current: up to 1.2A (depends on input voltage, load, and cooling)
• Onboard Power Indicator LED
• Mounting Hole Provided for easy installation

• Stable 5V regulated output for 5V electronics
• Screw terminals for input and output connections
• Onboard capacitors for smoother, low-noise output
• Built-in 7805 protections (thermal shutdown and current limiting)
• Compact size, easy to mount and integrate

• Input: Connect your supply to the input screw terminal (follow + / – markings on the PCB)
• Output: Take regulated 5V from the output screw terminal (follow +5V / GND markings on the PCB)
• Tip: Always confirm terminals with a multimeter before connecting your Arduino/circuit

• Dimensions (L × W × H): 58 × 23 × 23 mm
• Weight: 15g

• This is a linear regulator module: excess voltage is dissipated as heat
• Heating increases with higher input voltage and higher current (Power loss ≈ (Vin − 5V) × I)
• For high-current loads, use a lower input voltage (e.g., 7.5V–12V) or add heatsinking/airflow
• If you need better efficiency (less heat), consider a DC-DC buck converter module instead

• 1 × L7805 / LM7805 Step Down Converter 7.5V–35V to 5V Regulator Power Supply Module