STMicroelectronics

VN920-B5

VN920-B5 Description

The VN920-B5 from STMicroelectronics is a high-side power switch designed for general-purpose load driving applications. Part of the VIPower™ series, it integrates a single N-channel MOSFET with a 1:1 input-to-output ratio, delivering up to 30A continuous current with a low Rds(on) of 16mΩ (max). Operating within a 5.5V to 36V load voltage range, it eliminates the need for an external supply voltage (Vcc/Vdd), simplifying system design. Housed in a P2PAK (4 leads + tab) package, this surface-mount device is optimized for high-current switching while ensuring robust thermal performance.

VN920-B5 Features

• High-Side Configuration: Enables direct control of loads connected to the positive rail.
• Integrated Protections: Includes fixed current limiting, over-temperature shutdown, and over-voltage protection for enhanced reliability.
• Auto-Restart Function: Automatically recovers from fault conditions, minimizing downtime.
• Low Power Dissipation: Achieved through low Rds(on), improving efficiency in high-current applications.
• RoHS3 & REACH Compliant: Meets environmental and regulatory standards.
• On/Off Interface: Simple logic-level control for easy integration.

VN920-B5 Applications

Ideal for automotive, industrial, and consumer electronics, the VN920-B5 excels in:

• Solenoid/Valve Driving: High-current switching for actuators in automotive systems.
• Power Distribution Modules: Reliable load management in industrial control systems.
• LED Lighting: Efficient driving of high-power LED arrays.
• Motor Control: Robust performance in DC motor drivers.
  Its obsolete status may limit new designs, but existing deployments benefit from its durability and fault-tolerant design.

Conclusion of VN920-B5

The VN920-B5 combines high-current handling, integrated protections, and minimal external component requirements, making it a versatile solution for demanding switching applications. While newer alternatives may supersede it, its proven reliability in harsh environments ensures continued relevance in legacy systems. Designers should evaluate replacement options within STMicroelectronics' VIPower™ portfolio for future-proof solutions.