VN05N Introduction
The VN05N, developed by STMicroelectronics, is a monolithic device based on VIPower technology, designed to drive resistive or inductive loads with one side grounded. It features built-in thermal shutdown for protection against overheating and short circuits, ensuring reliable operation in various conditions. The input control is compatible with 5V logic levels, making it easy to interface with standard digital systems.
Additionally, the open-drain diagnostic output provides real-time feedback on open circuit (no load) and over-temperature status, enhancing system diagnostics and safety.
VN05N Block Diagram
VN05N Pinout
OUTPUT: Connects to the load; the switch controls the flow of current through this pin.
STATUS: Open-drain diagnostic output that indicates the load status, such as open circuit or over temperature.
Vcc: Power supply input for the device, typically 5V.
INPUT: Logic-level control input that turns the switch on or off.
GROUND: Common ground for the device.
VN05N Current and Voltage Conventions
VN05N Test Circuit
VN05N Specification
| Specification | Value |
| Technology | VIPower™ |
| Ratio - Input:Output | 1:01 |
| Load Voltage (Vcc) | 7V ~ 26V |
| Output Current | 13A |
| Overcurrent Protection | Yes |
| Rds On (Typ) | 180mOhm |
| Mounting Type | Through Hole |
| Operating Temperature Range | -40°C ~ 150°C |
| Package Type | Pentawatt-5 |
VN05N Features
Output current (continuous): 13A @ Tc=25°C
5V logic level compatible input
Thermal shutdown
Under voltage shutdown
Open drain diagnostic output
Very low standby power dissipation
VN05N Applications
Motor Control
Relay and Solenoid Driving
Lighting Control
Load Switching
Automotive Applications
Overcurrent and Overtemperature Protection Systems
VN05N Testing Guide
To test the VN05N, begin by preparing testing equipment, such as a multimeter and a power supply. First, connect the Vcc pin to your power supply's positive terminal and the Ground pin to the negative terminal.
Next, apply a 5V signal to the Input pin. This input controls the activation of the VN05N. The Output pin should be monitored for a response — when the input signal is high, the output should be conducted, allowing current to flow to your load.
To test the STATUS pin, check for any diagnostic signals indicating system status. When the device is functioning correctly, the STATUS pin will show whether the load is connected or if there is an over-temperature condition. If the VN05N operates normally, the STATUS pin should reflect no fault.
Finally, test the thermal protection feature by applying a load that draws a higher current than normal. The thermal shutdown feature should engage if the temperature exceeds safe limits, and the STATUS pin will indicate an over-temperature condition.
VN05N Package
The VN05N is housed in a Pentawatt-5 package, which is a compact, five-pin configuration for efficient heat dissipation and robust performance. This package is ideal for power devices like the VN05N, as it ensures reliable thermal management while minimizing space requirements.
FAQs
What is VN05N?
The VN05N is a monolithic power switch made using STMicroelectronics’ VIPower technology.
How does the thermal shutdown work?
The VN05N has built-in thermal protection that automatically turns off the output transistor when the device temperature exceeds a safe threshold. This helps prevent damage to the chip due to overheating.
What types of loads can the VN05N drive?
The VN05N can drive both resistive and inductive loads. It is often used in automotive applications such as controlling lights, motors, and other electrical systems.
