VNL5050N3TR-E

Product Overview

The STMicroelectronics VNL5050N3TR-E is a single-output N-channel low-side power switch and load driver in a surface-mount SOT-223 package. It operates from a 3.5 V to 5.5 V supply and switches loads up to 36 V with a maximum output current of 19 A. The device uses a non-inverting On/Off interface and includes fixed current limiting, over-temperature protection, over-voltage protection, and auto restart.

Key Features

• Single-output, 1:1 low-side N-channel switch with a non-inverting On/Off interface.
• Rated for load voltages up to 36 V and output currents up to 19 A.
• Rds On is specified as 50 mΩ maximum.
• Includes fixed current limiting, over-temperature protection, over-voltage protection, and auto restart.
• Operates from a 3.5 V to 5.5 V supply and -40°C to 150°C junction temperature range.

Applications

• Switching 36 V loads in systems using a 3.5 V to 5.5 V supply and On/Off control.
• Controlling high-current loads up to 19 A through one non-inverting input.
• Load switching in designs that need fixed current limiting, over-temperature, and over-voltage protection.

Design & Procurement Notes

Design considerations include the low-side output topology, 1:1 input-to-output relationship, and On/Off interface, which should be driven from a supply within the 3.5 V to 5.5 V range. Thermal and current margins should be reviewed against the 19 A output limit, 50 mΩ maximum Rds On, and -40°C to 150°C junction temperature range. Match the SOT-223 package and 36 V load rating to the board layout and load voltage.