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

STMicroelectronics VNQ5050AKTR-E

Name: VNQ5050AKTR-E
Brand: STMicroelectronics
SKU: VNQ5050AKTR-E
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: VNQ5050AKTR-E

Manufacturer:: STMicroelectronics

Category:: Power Distribution Switches, Load Drivers

Package:: 24-PowerBSOP (0.295", 7.50mm Width)

Datasheet:: VNQ5050AKTR-E.pdf

Description:: IC PWR DRVR N-CHAN 1:1 PWRSSO24

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Product details

Overview

VNQ5050AKTR-E from STMicroelectronics is a quad-channel automotive high-side driver with integrated analog current sense, designed for driving resistive, inductive, or capacitive loads connected to ground. It features 50 mΩ typical on-state resistance per channel, 19 A typical current limitation, ±10% current sense ratio drift over temperature and load, and operates across 4.5–36 V supply range - enabling robust LED and solenoid control in engine management and body electronics.

For engineers reviewing the VNQ5050AKTR-E datasheet, VNQ5050AKTR-E pinout, VNQ5050AKTR-E application, or VNQ5050AKTR-E equivalent, key selection criteria include proportional current sense accuracy (K₀ = 2420 typ), thermal shutdown with automatic restart, reverse battery protection compatibility, and PowerSSO-24 package thermal performance (R_thj-case = 2.8 °C/W).

Technical Context

This device implements four independent VIPower M0-5 high-side switches with active power limitation during inrush, self-limiting fast thermal transients, and undervoltage/overvoltage protection. Each channel delivers precise analog current sense (I_SENSE = I_OUT/K, K = 1340–3460) when CS_DIS is low, with <65 µs delay between output current rise and sense signal rise at 90% levels.

Protection architecture includes loss-of-ground and loss-of-V_CC detection, electrostatic discharge immunity (HBM 4 kV), ISO7637 transient compatibility, and thermal shutdown at 150–200 °C with 7 °C hysteresis. The CMOS-compatible 3.0 V logic inputs support direct microcontroller interfacing without level-shifting.

Key Specifications

Parameter	Value and Actual Design Meaning
Max supply voltage	41 V - withstands automotive load dump spikes without external clamping
Operating voltage range	4.5 to 36 V - supports full cold-crank (4.5 V) to boosted systems (36 V)
On-state resistance (per ch.)	50 mΩ typ at 25 °C - limits conduction loss to ≤200 mW at 2 A load
Current limitation (typ)	19 A - protects against short-circuit while sustaining >100 ms overload
Current sense ratio (K₀)	2420 typ (I_OUT/I_SENSE) - enables accurate 0.5–4 A sensing with 10 kΩ sense resistor
Off-state supply current	2 µA typ - ensures <10 µA total quiescent draw across all channels for always-on modules
Thermal shutdown threshold	150 °C min - triggers safe power reduction before silicon damage occurs

Pinout & Package

The VNQ5050AKTR-E is housed in a thermally enhanced PowerSSO-24 surface-mount package with exposed V_CC-connected thermal pad (TAB = V_CC) for PCB heat sinking. Pin count: 24 terminals, including 4 dedicated outputs, 4 inputs, 4 current sense pins, 1 CS_DIS, 1 V_CC, 1 GND, and multiple V_CC/GND repeats for current sharing and noise reduction.

Pin/Terminal	Circuit Role	Design Meaning
VCC	Main supply input	41 V max rating; internal clamp protects against ISO7637 transients; connects to TAB for thermal conduction
GND	Ground reference	Reverse-battery protected externally; must be isolated via diode/resistor network per Figure 25
INPUT1–4	CMOS-compatible control inputs	3.0 V logic threshold; 0.25 V hysteresis prevents noise-induced switching
OUTPUT1–4	High-side power outputs	Drive loads tied to ground; each internally limited to 19 A and thermally self-protected
CURRENT SENSE1–4	Analog current mirror outputs	Deliver I_SENSE = I_OUT/K; disabled when CS_DIS = high (high-Z state)
CS_DIS	Active-high current sense enable	CMOS-compatible; disables all 4 sense pins simultaneously to reduce system leakage

Key Features

Feature	Design Value
Inrush current active management	Power limitation circuitry prevents voltage sag during simultaneous channel turn-on
Proportional analog current sense	Four independent sense channels with ±10% ratio drift over -40 to 150 °C
Reverse battery protection support	Integrated design allows external GND-line diode/resistor network (Figure 25) to block -14 V faults
Thermal shutdown with auto-restart	Shuts down at ≥150 °C and recovers automatically once junction cools below 135 °C
Low electromagnetic susceptibility	Validated to ISO11452-2/4/5; optimized layout reduces radiated emissions in 150 kHz–1 GHz band

Applications

Engine Control Module (ECM)

Body Control Module (BCM)

Use Scenario: Driving fuel injector solenoids and ignition coils in 12 V/24 V diesel/gasoline engines.

IC Role / Device Role / Timing Role: High-side switch with precise current monitoring for closed-loop injection timing and coil energy control.

Use Value: Enables real-time fault detection via analog I_SENSE feedback, supporting OBD-II diagnostics and misfire detection without added sensors.

Use Scenario: Controlling interior lighting, window lift motors, and HVAC actuators in vehicle cabin systems.

IC Role / Device Role / Timing Role: Quad-channel load driver with integrated short-circuit and thermal protection for multi-function body nodes.

Use Value: Reduces BOM count by eliminating discrete current-sense resistors and protection ICs per channel.

LED Headlamp Driver

Transmission Control Unit (TCU)

Use Scenario: Powering adaptive front-lighting system (AFS) matrix LED arrays requiring individual channel dimming and fault reporting.

IC Role / Device Role / Timing Role: High-accuracy current source with programmable sense disable for PWM dimming synchronization.

Use Value: Achieves ±5% LED current matching across channels using factory-trimmed K-ratio, enabling uniform luminance.

Use Scenario: Managing solenoid valves and pressure control actuators in 8-speed automatic transmissions.

IC Role / Device Role / Timing Role: Robust high-side driver with fast (<45 µs) turn-off delay and demagnetization energy handling up to 104 mJ.

Use Value: Supports rapid valve sequencing under high ambient temperature (150 °C junction) without derating.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
TPS4H160-Q1	Single-channel, 160 mΩ R_ON, no integrated current sense, SPI interface	Requires external ADC for current monitoring; suited for distributed control architectures	Select when channel count flexibility and digital diagnostics outweigh analog sense convenience
VNQ7E100AJTR-E	Quad-channel, 100 mΩ R_ON, same PowerSSO-24 package, 10 A ILIM	Lower current capability but tighter ±3% current sense accuracy and faster 15 µs t_d(off)	Prefer for space-constrained designs needing higher precision at reduced load currents (≤10 A)

Compared with VNQ5050AKTR-E, TPS4H160-Q1 trades analog simplicity for digital configurability and scalability, while VNQ7E100AJTR-E offers higher sense accuracy and lower thermal resistance but sacrifices peak current drive - making the VNQ5050AKTR-E optimal for high-power, thermally demanding automotive loads requiring analog feedback.

Availability

VNQ5050AKTR-E is available at Aetrix Electronics and suitable for engine control modules, LED headlamp drivers, and transmission control units requiring stable component supply across automotive production lifecycles.

Supply support for VNQ5050AKTR-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, specializing in automotive-grade power ICs, microcontrollers, and sensors with AEC-Q100 qualification expertise.

The VNQ5050AKTR-E belongs to ST's VIPower™ high-side driver family, engineered specifically for harsh automotive environments where reliability, integrated protection, and analog diagnostic capability are critical for safety-critical load control.

FAQ

What is the maximum continuous output current per channel?

The VNQ5050AKTR-E provides 19 A typical DC current limitation per channel under nominal conditions (V_CC = 13 V). Actual sustained current depends on PCB copper area and ambient temperature: with 500 mm² of 2 oz copper, it delivers 8 A continuous per channel at 85 °C ambient before thermal limiting engages.

How does the current sense function behave when CS_DIS is high?

When CS_DIS is driven high (≥2.1 V), all four CURRENT SENSE pins enter high-impedance state with leakage ≤1 µA. This eliminates sense-path loading and reduces system-level quiescent current, enabling low-power sleep modes without sacrificing diagnostic readiness upon wake-up.

Can VNQ5050AKTR-E drive inductive loads like fuel injectors without external flyback components?

Yes - the device integrates an active V_CC clamp and supports up to 104 mJ demagnetization energy (L = 3 mH, V_bat = 13.5 V). External snubbers are unnecessary for standard 12 V injector coils, though layout optimization (short traces, ground plane) is required to maintain EMI compliance.

Is reverse battery protection built-in or externally implemented?

Reverse battery protection is externally implemented: the datasheet specifies use of either a series diode (DGND) or resistor (R_GND) in the GND path (Figure 25). The IC itself tolerates -0.3 V on V_CC and -200 mA on GND, but sustained reverse polarity requires external network to prevent latch-up or degradation.

VNQ5050AKTR-E Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Package/Case:: 24-PowerBSOP (0.295", 7.50mm Width)

Series:: VIPower™

Packaging:: Tape & Reel (TR)

Product Status:: Active

Switch Type:: General Purpose

Number of Outputs:: 4

Ratio - Input:Output:: 1:1

Output Configuration:: High Side

Output Type:: N-Channel

Interface:: On/Off

Voltage - Load:: 4.5V ~ 36V

Voltage - Supply (Vcc/Vdd):: Not Required

Current - Output (Max):: 13.5A

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

Input Type:: Non-Inverting

Features:: -

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:: PowerSSO-24

VNQ5050AKTR-E FAQ

1.How can I place an order for VNQ5050AKTR-E through Aetrix?

Please submit a Request for Quotation (RFQ) for VNQ5050AKTR-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 VNQ5050AKTR-E reliable?

The price and inventory of VNQ5050AKTR-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for VNQ5050AKTR-E is usually 5 days.

3.What payment methods are accepted for VNQ5050AKTR-E?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VNQ5050AKTR-E transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for VNQ5050AKTR-E?

VNQ5050AKTR-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your VNQ5050AKTR-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 VNQ5050AKTR-E?

For technical support, including VNQ5050AKTR-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VNQ5050AKTR-E requirements.

6.How does Aetrix verify that VNQ5050AKTR-E is sourced from the original manufacturer or authorized distributors?

All VNQ5050AKTR-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 VNQ5050AKTR-E meets industry standards.

7.What is the process for return or replacement of VNQ5050AKTR-E?

All VNQ5050AKTR-E units undergo pre-shipment inspection (PSI). If there is an issue with VNQ5050AKTR-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 VNQ5050AKTR-E part is unused and in its original packaging.

Return procedure for VNQ5050AKTR-E:

1.Submit a request within 90 days.

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

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