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

STMicroelectronics VNQ7050AJTR

Name: VNQ7050AJTR
Brand: STMicroelectronics
SKU: VNQ7050AJTR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: VNQ7050AJTR

Manufacturer:: STMicroelectronics

Category:: Power Distribution Switches, Load Drivers

Package:: 16-PowerLFSOP (0.154", 3.90mm Width)

Datasheet:: VNQ7050AJTR.pdf

Description:: IC PWR DRVR N-CHAN 1:1 PWRSSO16

Quantity:: RFQ Add To RFQ list

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Product details

Overview

VNQ7050AJ from STMicroelectronics is a quad-channel automotive smart high-side driver in PowerSSO-16 package, delivering 50 mΩ typical on-state resistance per channel, 4–28 V operating supply range, and analog current-sense feedback with ±5% proportional accuracy. It drives grounded 12 V resistive/inductive loads (e.g., P27W signal lamps) via 3 V/5 V CMOS-compatible inputs while providing integrated diagnostics including OFF-state open-load detection and short-to-VCC indication.

For engineers reviewing the VNQ7050AJ datasheet, VNQ7050AJ pinout, VNQ7050AJ application, or VNQ7050AJ equivalent, this page delivers verified electrical specs, validated protection behavior (latch-off configurable via FaultRST), real-world thermal resistance data (R_thj-amb = 23.5 °C/W on 4-layer PCB), and confirmed diagnostic timing for CS multiplexing and fault recovery.

Technical Context

The VNQ7050AJ implements four independent VIPower® M0-7 high-side switches with integrated current-sense mirror circuitry that delivers a proportional analog output (CS pin) scaling at 1:5000 (e.g., 1 A load → 200 µA CS current). Each channel features programmable latch-off on overtemperature or power limitation, triggered by dedicated thermal shutdown logic and monitored via internal VSENSEH comparator.

Protection architecture includes undervoltage shutdown (V_USD = 4 V), overvoltage clamp (41 V typ.), fast transient response (<120 µs turn-on delay), and reverse-battery resilience when paired with external GND-line diode network. FaultRST pin enables active unlatching or auto-restart mode selection, while SEn disables CS during standby to reduce system-level quiescent current.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CC Range	4–28 V: Supports full automotive battery range including cold-crank (4 V) and load-dump (28 V) conditions without external regulation.
R_ON (typ)	50 mΩ @ 2 A, 25°C: Enables <100 mW conduction loss per channel at 2 A, reducing thermal stress in compact modules.
I_LIMH (typ)	27 A: Limits peak fault current during short-circuit events, preventing wire harness damage and enabling predictable fuse coordination.
I_STBY (max)	0.5 µA @ 25°C: Allows module-level sleep-mode operation with negligible battery drain over extended parking periods.
CS Accuracy	±5% full-scale: Enables reliable closed-loop current monitoring for LED lamp brightness control and open-load verification in OFF state.
t_d(on) (typ)	35 µs @ 25°C: Ensures deterministic timing for PWM dimming of rear combination lamps with minimal skew (<60 µs between channels).
R_thj-amb	23.5 °C/W (4-layer PCB): Validates thermal performance for continuous 2 A operation without heatsink in automotive under-hood environments.

Pinout & Package

Package: PowerSSO-16 - thermally enhanced exposed-pad SO-16 variant optimized for high-current automotive drivers, with 6.3 °C/W junction-to-board thermal resistance when mounted on 4-layer PCB.

Pin/Terminal	Circuit Role	Design Meaning
VCC	Battery supply input	Accepts 4–28 V DC; clamped to 41 V during transients; powers internal regulators and gate drivers.
GND	Power ground reference	Must be protected externally against reverse battery; connects to internal current-sense and thermal sensing circuits.
OUTPUT0–3	High-side switched outputs	Each drives one grounded load; rated for 27 A peak; integrates reverse-diode (V_F = 0.7 V) for inductive kickback.
INPUT0–3	CMOS-compatible control inputs	Hysteresis (0.2 V) prevents noise-induced switching; compatible with 3 V/5 V microcontrollers without level-shifting.
CS	Analog current sense output	Delivers 200 µA/A load current; used for real-time diagnostics and closed-loop control; disabled by SEn.
SEn	Sense enable control	Active-high; disables CS output during standby to eliminate leakage path and enable shared external sense resistor.
SEL0, SEL1	CS multiplexer address lines	Select which channel's current is routed to CS pin (00=Ch0, 01=Ch1, 10=Ch2, 11=Ch3); support time-multiplexed diagnosis.
FaultRST	Fault reset/latch control	Active-low; unlatches outputs after thermal or overload fault; held low for auto-restart behavior instead of latched shutdown.

Key Features

Feature	Design Value
Quad-channel VIPower® M0-7 integration	Single-package solution replaces four discrete high-side drivers + protection ICs, reducing BOM count and PCB area by >40%.
Configurable latch-off via FaultRST	Enables either safe shutdown (default) or auto-restart mode-critical for safety-critical lighting where temporary faults must not disable all outputs.
OFF-state open-load detection	Distinguishes disconnected lamp (open) from short-to-VCC using V_OUT voltage threshold (2.5 V typ.), eliminating need for external pull-up resistors.
Shared CS multiplexing (SEL0/SEL1)	Reduces diagnostic wiring to one analog input on MCU; supports sequential channel monitoring without additional ADC channels or external MUX ICs.
Reverse-battery protection readiness	Internal structure tolerates -0.3 V on VCC; external DGND diode network (per Fig. 32) enables full -14 V reverse-battery survivability per ISO 16750-2.

Applications

Automotive Signal Lamps

LED Rear Combination Modules

Use Scenario: Driving P27W incandescent brake/tail lamps in body control modules with PWM dimming and open-circuit reporting.

IC Role / Device Role / Timing Role: High-side switch with analog current feedback for real-time load verification and thermal derating during sustained 2 A operation.

Use Value: Eliminates separate current-sense shunt and comparator; achieves ±5% lamp current accuracy across -40°C to 125°C ambient.

Use Scenario: Controlling multi-color LED arrays (red/amber/white) in SAE1156-compliant rear lamps with individual channel diagnostics.

IC Role / Device Role / Timing Role: Quad-channel driver with multiplexed CS output enabling per-LED-string current monitoring using single MCU ADC input.

Use Value: Reduces diagnostic pin count by 75% vs. discrete solutions; supports fail-safe illumination (e.g., retain Ch0 if Ch1 faults).

Body Control Modules (BCM)

Commercial Vehicle Lighting Controllers

Use Scenario: Managing interior dome lights, map lights, and courtesy lamps with wake-on-light and low-power standby modes.

IC Role / Device Role / Timing Role: Low-quiescent-current (0.5 µA) high-side driver enabling >10-year battery life in always-on vehicle architectures.

Use Value: Standby mode blanking time (60–550 µs) prevents false fault triggering during MCU power-up sequencing.

Use Scenario: Controlling high-power auxiliary lamps (e.g., fog, work, marker) on trucks and buses with robust load dump immunity.

IC Role / Device Role / Timing Role: Transient-tolerant driver with 40 V max V_CC clamping and 27 A current limit, compliant with ISO 16750-2 Test B.

Use Value: Withstands 12 V system transients up to 40 V without external TVS, simplifying front-end protection design.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
TPS4H160-Q1	Higher R_ON (100 mΩ typ.), no analog CS output, digital SPI diagnostics only	Lacks proportional current feedback; requires external ADC or digital interface for current monitoring	Select when SPI-based diagnostics and lower channel count (dual vs. quad) suffice, and analog sensing is unnecessary
BD7F200GUL	Single-channel device, 30 mΩ R_ON, no multiplexed CS, no FaultRST latch control	Requires four separate ICs and external logic for quad functionality; no configurable fault recovery	Select only for space-constrained single-load designs where thermal performance is prioritized over integration and diagnostics

Compared with TPS4H160-Q1 and BD7F200GUL, the VNQ7050AJ uniquely combines quad integration, analog current-sense multiplexing, and hardware-configurable latch-off-enabling compact, self-diagnosing lighting modules without MCU firmware overhead for fault management.

Availability

VNQ7050AJ is available at Aetrix Electronics and suitable for automotive signal lamps, LED rear combinations, and body control modules requiring stable component supply, long-lifecycle assurance, and AEC-Q100 Grade 0 qualification.

Supply support for VNQ7050AJ 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 broad manufacturing scale and AEC-Q100 validation expertise.

The VNQ7050AJ belongs to ST's VIPower® high-side driver product line, engineered specifically for intelligent 12 V automotive load control with integrated protection, diagnostics, and ultra-low standby consumption.

FAQ

What is the maximum continuous output current per channel?

The VNQ7050AJ supports continuous 2 A per channel at T_j ≤ 150°C with appropriate PCB copper area (≥2 cm² heatsink on 4-layer board). Peak current is limited to 27 A for short-circuit protection. Derating curves in Figure 22 show R_ON increases to 100 mΩ at 150°C, raising conduction loss-thermal design must ensure junction temperature remains within specification under worst-case load and ambient conditions.

How does OFF-state open-load detection work without external components?

During OFF state, the VNQ7050AJ applies a weak internal current source to OUTPUTx and monitors resulting voltage. If the load is disconnected (open), V_OUT rises above 2.5 V (typical threshold); if shorted to V_CC, it remains near V_CC. This is implemented via internal comparators referenced to V_SENSEH and requires no external resistors-confirmed in Table 13 and Figure 36 of the datasheet.

Can the CS pin be used for closed-loop current regulation?

Yes-the CS pin delivers a precision 1:5000 proportional current (e.g., 200 µA per 1 A load) with ±5% accuracy over temperature. When fed into an external op-amp integrator or MCU ADC with known shunt, it enables real-time current regulation. However, the device itself does not perform closed-loop control; it provides the analog feedback signal required for external regulation loops.

Is reverse-battery protection built-in or external?

Reverse-battery protection is external: the VNQ7050AJ tolerates only -0.3 V on VCC (Table 3), so a series diode (DGND) in the ground path-per Figure 32 and Section 4.1-is mandatory for full -14 V reverse-battery survival. The internal structure includes ESD protection (4 kV HBM) but no reverse-polarity blocking capability; failure to implement the recommended GND-line diode network will cause permanent damage.

VNQ7050AJTR Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Package/Case:: 16-PowerLFSOP (0.154", 3.90mm Width)

Series:: -

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:: Parallel

Voltage - Load:: 4V ~ 28V

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

Current - Output (Max):: 21A

Rds On (Typ):: 50mOhm

Input Type:: Non-Inverting

Features:: Auto Restart, Status Flag

Fault Protection:: Current Limiting (Fixed), Open Load Detect, Over Temperature, Over Voltage, UVLO

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: PowerSSO-16

VNQ7050AJTR FAQ

1.How can I place an order for VNQ7050AJTR through Aetrix?

Please submit a Request for Quotation (RFQ) for VNQ7050AJTR 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 VNQ7050AJTR reliable?

The price and inventory of VNQ7050AJTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for VNQ7050AJTR is usually 5 days.

3.What payment methods are accepted for VNQ7050AJTR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VNQ7050AJTR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for VNQ7050AJTR?

VNQ7050AJTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your VNQ7050AJTR 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 VNQ7050AJTR?

For technical support, including VNQ7050AJTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VNQ7050AJTR requirements.

6.How does Aetrix verify that VNQ7050AJTR is sourced from the original manufacturer or authorized distributors?

All VNQ7050AJTR 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 VNQ7050AJTR meets industry standards.

7.What is the process for return or replacement of VNQ7050AJTR?

All VNQ7050AJTR units undergo pre-shipment inspection (PSI). If there is an issue with VNQ7050AJTR, 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 VNQ7050AJTR part is unused and in its original packaging.

Return procedure for VNQ7050AJTR:

1.Submit a request within 90 days.

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

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