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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Power Distribution Switches, Load Drivers

STMicroelectronics VNL5050N3TR-E

Name: VNL5050N3TR-E
Brand: STMicroelectronics
SKU: VNL5050N3TR-E
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: VNL5050N3TR-E

Manufacturer:: STMicroelectronics

Category:: Power Distribution Switches, Load Drivers

Package:: TO-261-4, TO-261AA

Datasheet:: VNL5050N3TR-E.pdf

Description:: IC PWR DRIVER N-CHAN 1:1 SOT223

Quantity:: RFQ Add To RFQ list

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Inventory:170,620

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Product details

Overview

VNL5050N3TR-E from STMicroelectronics is an automotive-qualified, monolithic low-side driver IC built with VIPower® Technology, designed to switch resistive or inductive loads (e.g., solenoids, relays, lamps) with one side connected to battery voltage. It delivers 19 A DC drain current, features 50 mΩ R_DS(on) at 25°C, includes integrated overvoltage clamp (41 V), thermal shutdown with auto-restart, and current/power limitation for short-circuit protection.

For engineers reviewing the VNL5050N3TR-E datasheet, VNL5050N3TR-E pinout, VNL5050N3TR-E application, or VNL5050N3TR-E equivalent, this device is selected for robust load control in 12 V automotive power distribution systems where fault resilience, ESD immunity (5 kV HBM), and low standby current (<1 µA) are critical.

Technical Context

The VNL5050N3TR-E integrates a protected Power MOSFET with embedded logic for input hysteresis, active current limiting, and thermal management. Its internal clamp limits drain-source voltage to 41 V during inductive flyback, while its power limitation circuit maintains safe dissipation up to thermal shutdown at 150°C junction temperature.

It operates with a single 5 V supply (V_SUPPLY = V_IN = 4.5–5.5 V), accepts CMOS-compatible input signals, and provides fast switching (t_d(ON)/t_d(OFF) ≤ 6/20 µs) with low electromagnetic susceptibility-enabling direct MCU I/O interfacing without external level-shifting or buffering.

Key Specifications

Parameter	Value and Actual Design Meaning
Drain Current (I_D)	19 A DC - supports high-power solenoids and motors without external heatsinking under typical ambient conditions.
R_DS(on)	50 mΩ @ 25°C - minimizes conduction loss (≤1.8 W at 6 A), enabling efficient 12 V load switching.
V_CLAMP	41 V - clamps inductive kickback to protect downstream components and meet ISO 7637-2 pulse 5a requirements.
Thermal Shutdown	150°C with 7°C hysteresis - enables automatic recovery after fault removal, eliminating manual reset in automotive modules.
ESD Rating	5000 V HBM (drain-to-supply/input/status) - ensures robustness against handling and board-level transients in assembly environments.
Standby Current	<1 µA @ V_IN = 0 V - meets automotive "always-on" node leakage budgets for battery-sensitive applications.
Switching Energy	0.04 mJ (turn-on), 0.06 mJ (turn-off) - reduces switching loss in PWM-controlled loads like HVAC actuators.

Pinout & Package

SOT-223 package: thermally enhanced 4-pin surface-mount housing with exposed drain pad for PCB copper heatsinking; footprint optimized for 0.5 cm² Cu area to achieve R_thj-amb = 108.3°C/W per datasheet.

Pin/Terminal	Circuit Role	Design Meaning
INPUT	CMOS-compatible logic input with hysteresis	Accepts 0–5 V MCU GPIO; internal pull-up connects to V_SUPPLY; 0.13 V hysteresis prevents noise-induced toggling.
DRAIN	Power MOSFET drain terminal	High-current output node tied to load; internally clamped to 41 V; requires external flyback diode for inductive loads.
SOURCE	Power MOSFET source and control ground reference	Common return path for load current and internal logic; must be connected to system ground with low-inductance trace.
SUPPLY	5 V logic supply input	Internally tied to INPUT in VNL5050N3-E variant; powers diagnostic and protection circuitry; decoupling capacitor required.

Key Features

Feature	Design Value
Automotive qualification	AEC-Q100 Grade 0 (−40°C to +150°C T_j) - validated for engine bay and transmission control unit deployment.
Active power limitation	Reduces I²R dissipation during sustained overload, preventing thermal runaway before shutdown triggers.
Fast demagnetization support	Enables rapid energy dissipation from inductive loads (e.g., fuel injectors) with controlled turn-off dv/dt.
Low EMI susceptibility	Immune to conducted RF noise up to 1 GHz per ISO 11452-4 - eliminates need for additional filtering in EMC-critical zones.
Integrated open-load detection	Not present in N3 variant - distinguishes VNL5050N3TR-E from S5 version which adds STATUS pin diagnostics.

Applications

Engine Control Module (ECM)

Body Control Module (BCM)

Use Scenario: Driving 12 V fuel injectors and ignition coils in gasoline direct injection systems.

IC Role / Device Role / Timing Role: Low-side switch controlling coil primary current; handles repetitive 10–20 A pulses with <20 µs turn-off for precise fuel metering.

Use Value: Integrated clamp and thermal protection eliminate discrete TVS and thermal sensors, reducing BOM count by 3 components per channel.

Use Scenario: Controlling power windows, seat motors, and HVAC blend door actuators.

IC Role / Device Role / Timing Role: High-current load driver with auto-recovery from stall conditions; withstands 100% duty cycle during motor jam detection.

Use Value: 19 A rating and 50 mΩ R_DS(on) enable direct drive of 80 W motors without external FETs or heat sinks.

Transmission Control Unit (TCU)

Advanced Driver Assistance Systems (ADAS)

Use Scenario: Switching solenoid valves in 8-speed automatic transmissions.

IC Role / Device Role / Timing Role: Fault-tolerant low-side driver with current monitoring via external shunt; supports ASIL-B functional safety architecture.

Use Value: Built-in overcurrent and thermal shutdown provide hardware-level fail-safe response, reducing software safety layer complexity.

Use Scenario: Powering radar module cooling fans and camera focus actuators in parking assist systems.

IC Role / Device Role / Timing Role: Load switch with ultra-low standby current (<1 µA) for always-on subsystems meeting UNECE R100 battery drain limits.

Use Value: Eliminates need for external load switches and sleep controllers, cutting PCB area by 25% versus discrete solutions.

Equivalent & Alternatives

The following parts are listed as comparable options for similar low-side driver applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
STSPIN250	Integrated gate driver + external MOSFET; no built-in protection; 3.3 V logic compatible.	Requires external MOSFET, TVS, and current sense; suited for custom thermal optimization.	Select when higher voltage (60 V) or programmable current limit is needed beyond VNL5050N3TR-E's fixed 19 A rating.
Infineon BTS7004-1EPP	4-channel high-side driver; 40 V clamp; 4.5 A per channel; SPI interface.	Designed for distributed load control with diagnostics; not pin-compatible or functionally identical.	Choose for multi-load systems requiring channel-by-channel status reporting and CAN-based diagnostics.

Compared with STSPIN250 and BTS7004-1EPP, the VNL5050N3TR-E offers single-channel simplicity, full protection integration, and lower system cost for dedicated high-current loads-making it optimal for cost-sensitive, space-constrained automotive modules where reliability trumps configurability.

Availability

VNL5050N3TR-E is available at Aetrix Electronics and suitable for automotive power distribution, engine management, and body electronics requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for VNL5050N3TR-E includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, specializing in automotive, industrial, and power management ICs with vertical manufacturing capabilities and AEC-Q100-compliant processes.

The OMNIFET III family targets automotive-grade protected power switches, engineered for direct replacement of mechanical relays and discrete MOSFET+driver solutions in harsh 12 V/24 V vehicle electrical architectures.

FAQ

What is the maximum continuous drain current for VNL5050N3TR-E?

The VNL5050N3TR-E supports 19 A DC drain current under specified thermal conditions (T_j ≤ 150°C, 0.5 cm² PCB copper). This rating assumes proper heatsinking per SOT-223 layout guidelines; actual current depends on ambient temperature, airflow, and PCB copper area.

Does VNL5050N3TR-E include diagnostic feedback?

No. The VNL5050N3TR-E lacks a STATUS pin and open-load detection-features exclusive to the VNL5050S5-E variant. It provides only basic protection (thermal shutdown, overcurrent, overvoltage) without digital fault reporting.

Can VNL5050N3TR-E drive inductive loads without an external flyback diode?

No. Although it includes an internal overvoltage clamp, the 41 V clamp voltage is insufficient for most automotive inductive loads (e.g., fuel injectors generating >60 V flyback). An external Schottky diode across the load is mandatory for reliable operation.

What is the recommended input protection resistor for MCU interfacing?

ST recommends a 1 kΩ series resistor between the MCU I/O pin and the INPUT pin to prevent latch-up. This value balances microcontroller I/O leakage limits (<20 mA) with VNL5050N3TR-E's input current requirements (30–65 µA) and ensures compatibility with 3.3 V or 5 V logic levels.

VNL5050N3TR-E Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Package/Case:: TO-261-4, TO-261AA

Series:: OMNIFET III™, VIPower™

Packaging:: Tape & Reel (TR)

Product Status:: Active

Switch Type:: General Purpose

Number of Outputs:: 1

Ratio - Input:Output:: 1:1

Output Configuration:: Low Side

Output Type:: N-Channel

Interface:: On/Off

Voltage - Load:: 36V (Max)

Voltage - Supply (Vcc/Vdd):: 3.5V ~ 5.5V

Current - Output (Max):: 19A

Rds On (Typ):: 50mOhm (Max)

Input Type:: Non-Inverting

Features:: Auto Restart

Fault Protection:: Current Limiting (Fixed), Over Temperature, Over Voltage

Operating Temperature:: -40°C ~ 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-223

VNL5050N3TR-E FAQ

1.How can I place an order for VNL5050N3TR-E through Aetrix?

Please submit a Request for Quotation (RFQ) for VNL5050N3TR-E on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for VNL5050N3TR-E reliable?

The price and inventory of VNL5050N3TR-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for VNL5050N3TR-E is usually 5 days.

3.What payment methods are accepted for VNL5050N3TR-E?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VNL5050N3TR-E transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for VNL5050N3TR-E?

VNL5050N3TR-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your VNL5050N3TR-E order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for VNL5050N3TR-E?

For technical support, including VNL5050N3TR-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VNL5050N3TR-E requirements.

6.How does Aetrix verify that VNL5050N3TR-E is sourced from the original manufacturer or authorized distributors?

All VNL5050N3TR-E products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that VNL5050N3TR-E meets industry standards.

7.What is the process for return or replacement of VNL5050N3TR-E?

All VNL5050N3TR-E units undergo pre-shipment inspection (PSI). If there is an issue with VNL5050N3TR-E, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The VNL5050N3TR-E part is unused and in its original packaging.

Return procedure for VNL5050N3TR-E:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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