The VN31SP13TR is a high-performance automotive-grade high-side switch designed by STMicroelectronics, aimed at driving various automotive loads with a focus on safety, reliability, and efficiency. This device is part of ST’s VIPower® family, which integrates advanced features for optimal performance in automotive applications.

## Key Specifications

## 1. General Description

- Type: High-Side Switch
- Package: SO-8
- Grade: Automotive Grade

## 2. Electrical Characteristics

- Supply Voltage (Vcc):
- Operating Voltage Range: 5V to 36V
- Absolute Maximum Rating: 40V
- Load Current (I_L):
- Continuous Current: Up to 13A
- Peak Current: Up to 25A (pulsed)
- Rds(on):
- On-State Resistance: 20 mΩ (typical at Vcc = 13.5V, I_L = 6A)
- Quiescent Current: 40 µA (typical)
- Thermal Resistance:
- Junction-to-Ambient: 50°C/W
- Junction-to-Case: 10°C/W

## 3. Protection Features

- Overload Protection: Integrated current limiting
- Short Circuit Protection: Provides short-circuit protection with automatic recovery
- Thermal Shutdown: The device includes thermal shutdown protection to prevent overheating
- Reverse Polarity Protection: Designed to handle reverse voltage conditions
- Overvoltage Protection: Integrated protection against overvoltage conditions

## 4. Control Features

- Gate Drive Voltage:
- Logic Input Threshold: 2.5V (typical)
- Control Voltage Range: 3V to 36V
- Input Pin: Logic-level compatible input
- Status Pin: Provides an indication of the switch status (on/off)

## 5. Performance Characteristics

- Switching Frequency: Suitable for switching frequencies up to 100 kHz
- Turn-On Time: 0.2 ms (typical)
- Turn-Off Time: 0.2 ms (typical)
- Electromagnetic Interference (EMI): Designed to minimize EMI

## 6. Package and Pinout

- Package Type: SO-8 (Small Outline)
- Pin Count: 8 pins
- Pin Configuration:
- Pin 1: Ground (GND)
- Pin 2: Input (IN)
- Pin 3: Status (ST)
- Pin 4: Drain (D)
- Pin 5: Source (S)
- Pin 6: Gate (G)
- Pin 7: Vcc
- Pin 8: NC (No Connection)

## 7. Operating Temperature Range

- Operating Temperature: -40°C to 150°C
- Storage Temperature: -55°C to 150°C

## Applications

The VN31SP13TR is designed primarily for automotive applications but can be used in other scenarios requiring robust high-side switching capabilities. Key applications include:

- Automotive Lighting: Headlights, taillights, and interior lights
- Power Distribution: Power management in automotive systems
- Motor Control: Controlling small motors in automotive accessories
- Load Switching: Switching resistive and inductive loads

## Advantages

- High Current Handling: Capable of handling high currents up to 13A, making it suitable for high-power automotive loads.
- Efficient Thermal Management: With its low Rds(on) and effective thermal dissipation, the VN31SP13TR maintains performance under high load conditions.
- Advanced Protection: Comprehensive protection features enhance reliability and safety in automotive environments.
- Automotive Qualification: Meets automotive standards for reliability and performance, ensuring durability in harsh conditions.

## Conclusion

The STMicroelectronics VN31SP13TR is a highly reliable and versatile high-side switch ideal for automotive and other high-power applications. Its robust protection features, high current handling, and efficient thermal management make it a reliable choice for demanding environments where safety and performance are critical.