STMicroelectronics

VN771K

VN771K Description

The VN771K from STMicroelectronics is a half-bridge (2) driver IC designed for inductive load applications, integrating Power MOSFET technology with advanced protection features. Operating within a 5.5V to 36V supply range, it delivers 9A per channel with a low Rds(on) of 95mOhm (max), ensuring efficient power handling. Part of the OMNIFET II™ and VIPower™ series, this obsolete yet robust driver is ROHS3 compliant and REACH unaffected, making it suitable for legacy designs requiring high reliability. Packaged in a 28SO tube, it is optimized for surface-mount applications in demanding environments.

VN771K Features

• Advanced Protection: Integrates current limiting, ESD, open-load detection, over-temperature, over-voltage, short-circuit, and UVLO safeguards for robust operation.
• Status Flag: Provides real-time fault monitoring, enhancing system diagnostics.
• High Efficiency: Low Rds(on) minimizes power dissipation, ideal for DC motors, relays, and general-purpose switching.
• Wide Voltage Range: Supports 5.5V–36V load and supply voltages, versatile for industrial and automotive applications.
• Logic Interface: Simplifies integration with microcontrollers or digital control circuits.

VN771K Applications

• DC Motor Control: Precision driving for brushed motors in robotics, automotive actuators, and industrial automation.
• Relay/Inductive Load Switching: Reliable switching for solenoids, valves, and contactors.
• Power Distribution Systems: Used in short-circuit-protected power switches for PCB-level designs.
• Legacy Systems: Ideal for maintaining or upgrading older systems requiring VIPower™ technology.

Conclusion of VN771K

The VN771K stands out for its high-current handling, integrated protections, and diagnostic capabilities, making it a preferred choice for inductive load management in harsh environments. While obsolete, its STMicroelectronics pedigree ensures reliability for niche applications. Engineers seeking a rugged, feature-rich half-bridge driver for DC motors or relays will find the VN771K a compelling solution despite its discontinued status.