STMicroelectronics

VN750S

VN750S Description

The VN750S from STMicroelectronics is a high-side power switch designed for general-purpose load driving applications. Part of the VIPower™ series, this obsolete N-channel MOSFET-based IC offers a 1:1 input-to-output ratio and operates within a 5.5V to 36V load voltage range, making it suitable for a variety of automotive and industrial systems. With a maximum output current of 6A and a low Rds(on) of 60mΩ (max), it ensures efficient power delivery with minimal conduction losses. The device is housed in an 8-pin SO package and is surface-mountable, complying with MSL 3 (168 hours) moisture sensitivity standards.

VN750S Features

• High-Side Configuration: Simplifies circuit design by eliminating the need for an external supply (Vcc/Vdd not required).
• Integrated Protections: Includes current limiting (fixed), open-load detection, over-temperature, and over-voltage protection, enhancing system reliability.
• Auto Restart & Status Flag: Automatically recovers from faults and provides diagnostic feedback for system monitoring.
• Low Power Dissipation: Optimized 60mΩ Rds(on) reduces heat generation, improving thermal performance.
• Wide Operating Range: Supports 5.5V–36V loads, ideal for 12V/24V automotive and industrial applications.

VN750S Applications

• Automotive Systems: Power distribution for lighting, solenoids, and motors in 12V/24V battery-fed networks.
• Industrial Controls: Driving relays, actuators, and small DC loads in factory automation.
• Power Management: Load switching in battery-powered devices where low standby current is critical.
• Fault-Tolerant Designs: Systems requiring self-recovery from short-circuit or thermal overload conditions.

Conclusion of VN750S

The VN750S excels in rugged, high-current switching applications with its robust protection suite and efficient performance. While marked obsolete, its VIPower™ architecture and auto-restart capability make it a legacy solution for designs prioritizing reliability. Engineers working on automotive or industrial platforms may still leverage its low Rds(on) and diagnostic features for fault-resistant power distribution. For newer designs, STMicroelectronics’ updated VIPower™ offerings should be evaluated.