About this part

VNB35NV04TR-E – 45A Low-Side Power Load Switch – STMicroelectronics

The VNB35NV04TR-E from STMicroelectronics is a robust low-side power load switch designed for high-current switching applications. Part of the OMNIFET II™ series, this IC delivers efficient power distribution with integrated protection features, ensuring reliable performance in demanding environments. PCX supplies this industrial-grade component with guaranteed stock availability and expedited shipping.

Key Features

• High Current Handling: Supports up to 45A continuous output current
• Ultra-Low Resistance: 13mΩ max Rds(On) for minimal power loss
• Wide Voltage Range: Manages loads up to 36V max
• Integrated Protection: Fixed current limiting, over-temperature, and over-voltage fault protection
• Industrial Temperature Range: Operates from -40°C to +150°C (TJ)
• Surface-Mount Design: TO-263-3 (D2PAK) package for secure PCB mounting

Technical Specifications

• Switch Type: General Purpose Low-Side
• Output Configuration: Single N-Channel MOSFET
• Interface: On/Off control (Non-Inverting Input)
• Supplier Device Package: D2PAK (3-Pin)
• Compliance: RoHS Compliant
• Base Part Number: VNB35

Typical Applications

• Automotive power distribution systems
• Industrial motor drives and solenoids
• Power supply unit (PSU) load switching
• Battery management circuits
• Heavy-duty relay replacements

About STMicroelectronics

STMicroelectronics is a global semiconductor leader with over 30 years of innovation in power management solutions. Their VIPower™ technology portfolio, which includes the OMNIFET II™ series, sets industry standards for efficiency and reliability in automotive and industrial applications.

Renowned for rigorous quality control and extended product lifecycles, STMicroelectronics components undergo exhaustive validation testing. This commitment to excellence ensures consistent performance in mission-critical systems worldwide, making them a trusted partner for engineers designing next-generation electronics.

About Power Load Switches

Power load switches are essential integrated circuits that manage high-current delivery in electronic systems. Unlike mechanical relays, they provide silent, wear-free operation with precise digital control. These components act as intelligent “gatekeepers” between power sources and sensitive loads, enabling safe power sequencing and distribution.

Modern load switches like the VNB35NV04TR-E integrate critical protection features that prevent system damage during fault conditions. Their low Rds(On) characteristics significantly reduce thermal stress and power dissipation, making them ideal for space-constrained designs requiring high efficiency and reliability under extreme operating conditions.

Packaging Options

Available in industry-standard Tape & Reel (TR) for automated assembly. Contact PCX for Cut Tape (CT) and other special packaging requirements.

FAQs

Q: What is the difference between high-side and low-side switching?
A: Low-side switches ground the load (placed between load and GND), while high-side switches control the positive supply. Low-side configurations typically offer simpler drive circuitry.

Q: Does this IC require an external heatsink?
A: The D2PAK package provides excellent thermal performance. For continuous 45A operation, PCB copper pour or supplemental heatsinking is recommended per datasheet guidelines.

Q: Is the fault protection auto-recovery?
A: Over-temperature protection features automatic restart upon cooling. Over-current events require cycling the ON/OFF input to reset.

Q: Can this switch handle inductive loads?
A: Yes, the integrated clamp diode protects against back-EMF from motors, solenoids, and relays.

Q: What’s the typical control voltage for the ON/OFF pin?
A: Logic-level compatible: 2.5V (min) for ON state, 0.8V (max) for OFF state.

Q: Are evaluation boards available for this component?
A: STMicroelectronics offers development kits for their VIPower™ series. Contact PCX for application support resources.

Order today for same-day shipping! All orders include access to the full datasheet and technical support from PCX engineers. Product images are representational; refer to datasheet for exact specifications.