STMicroelectronics

VN808SR

VN808SR Description

The VN808SR from STMicroelectronics is an 8-channel high-side power switch designed for general-purpose load driving applications. Part of the VIPower™ series, this obsolete but robust IC integrates N-channel MOSFETs with a 1:1 input-to-output ratio, supporting 10.5V to 45V load voltages. It features a low Rds(on) of 150mOhm (typical) and delivers up to 700mA per channel, making it suitable for driving resistive, inductive, or capacitive loads. The device operates without an external Vcc/Vdd supply, simplifying system design. Packaged in a surface-mount PWRSO36 tube, it complies with ROHS3 and REACH environmental standards.

VN808SR Features

• High-Side Configuration: Enables direct control of loads connected to the positive rail.
• Integrated Protections: Includes fixed current limiting and over-temperature fault protection with auto-restart functionality for enhanced reliability.
• Status Flag: Provides diagnostic feedback for fault conditions.
• Low Power Dissipation: Optimized 150mOhm Rds(on) minimizes heat generation.
• Wide Voltage Range: Supports 10.5V–45V loads, ideal for automotive and industrial systems.
• On/Off Interface: Simple logic-level control for each channel.

VN808SR Applications

The VN808SR excels in:

• Automotive Systems: Driving lamps, solenoids, or relays in 12V/24V networks.
• Industrial Automation: Controlling actuators, valves, or small motors.
• Power Distribution Units (PDUs): Managing multiple loads with fault monitoring.
• LED Lighting: High-current LED arrays or backlighting modules.
• Obsolete Designs: Legacy systems requiring drop-in replacements with robust protection features.

Conclusion of VN808SR

While marked obsolete, the VN808SR remains a highly reliable solution for multi-channel high-side switching. Its VIPower™ technology, combined with built-in protections and low Rds(on), ensures efficient load management in harsh environments. Ideal for automotive, industrial, and lighting applications, it balances performance with simplicity. Engineers seeking fault-tolerant, high-current drivers for legacy or cost-sensitive designs may find this IC a compelling choice despite its discontinued status.