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

STMicroelectronics VNQ7040AY-E

Name: VNQ7040AY-E
Brand: STMicroelectronics
SKU: VNQ7040AY-E
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: VNQ7040AY-E

Manufacturer:: STMicroelectronics

Category:: Power Distribution Switches, Load Drivers

Package:: 36-PowerBFSOP (0.295", 7.50mm Width)

Datasheet:: VNQ7040AY-E.pdf

Description:: IC PWR DRVR N-CHAN 1:1 PWRSSO36

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Product details

Overview

VNQ7040AY-E from STMicroelectronics is a quad-channel automotive smart high-side driver in PowerSSO-36 package, integrating MultiSense analog feedback for load current (±3% accuracy), VCC supply voltage, and chip temperature monitoring. It features LED Mode on channels 0–1, 40 mΩ typical on-state resistance, 34 A current limitation, and supports 4–28 V operating range with 0.5 µA max standby current - deployed in turn indicator control for SAE1156/R5W/LED rear combinations.

For engineers reviewing the VNQ7040AY-E datasheet, VNQ7040AY-E pinout, VNQ7040AY-E application, or VNQ7040AY-E equivalent, key selection criteria include diagnostic multiplexing capability, latch-off configurability via FaultRST, LED Mode timing behavior, and ISO 7637-2 transient immunity compliance for 12 V automotive systems.

Technical Context

The device implements four independent VIPower® high-side switches with integrated current-sense mirror, thermal shutdown, and power limitation protection. Each channel accepts 3 V/5 V CMOS-compatible logic inputs and delivers precise proportional analog feedback through a single multiplexed MultiSense pin using SEL0–SEL2 address lines.

MultiSense operation supports three diagnostic modes - load current sense (IOUT/ISENSE ratio = 1:2000), VCC monitoring (0.5 V/V), and TCHIP sensing (1.5 mV/°C) - all selectable via digital address and enabled by SEn. LED Mode modifies switching slew rates and current-limit thresholds specifically for low-inertia LED loads on channels 0 and 1.

Key Specifications

Parameter	Value and Actual Design Meaning
Channels	4 independent high-side outputs with individual CMOS-compatible INPUT pins
R_ON (typ)	40 mΩ per channel - enables <1 W conduction loss at 5 A load current
I_LIMH (typ)	34 A - self-limiting peak current during short-circuit events without external components
V_CC range	4 to 28 V - supports cold-crank (4 V) and jump-start (28 V) conditions in 12 V automotive systems
Standby current	≤0.5 µA - ensures negligible battery drain in vehicle off-state
MultiSense accuracy	±3% full-scale for load current - enables closed-loop current regulation in lamp diagnostics
Transient immunity	ISO 7637-2 Pulse 5b Level IV (40 V clamp) - survives load-dump transients without latch-up

Pinout & Package

Package: PowerSSO-36 - thermally enhanced exposed-pad surface-mount package with 36 terminals, optimized for high-current automotive PCB layouts and thermal dissipation (R_thj-board = 4.9 °C/W).

Pin/Terminal	Circuit Role	Design Meaning
VCC	Battery supply input	Primary 12 V rail connection; clamped to 40 V during transients
GND	Power ground reference	Common return path for load current and internal bias; reverse-battery tolerant
OUTPUT0–3	High-side switched outputs	Drive grounded resistive/inductive/capacitive loads; each internally limited to 34 A
INPUT0–3	CMOS-compatible control inputs	Accept 3 V/5 V logic; hysteresis prevents noise-induced switching
MultiSense	Multiplexed analog diagnostic output	Delivers proportional current for IOUT, VCC, or TCHIP - requires external ADC sampling
SEn	MultiSense enable	Active-high signal enabling analog feedback; disables sense current when low
SEL0–2	Multiplexer address lines	Select diagnostic source: 000=IOUT, 001=VCC, 010=TCHIP, others reserved
FaultRST	Fault reset / auto-restart control	Active-low pin: latched fault clears on rising edge; held low enables auto-restart mode
LED0, LED1	LED Mode enable (channels 0 & 1)	Activates modified slew rate and current-limit profile optimized for LED loads

Key Features

Feature	Design Value
MultiSense analog feedback	Single-pin multiplexed sensing of load current (±3%), VCC (0.5 V/V), and chip temperature (1.5 mV/°C)
Configurable latch-off	FaultRST pin allows either manual unlatch or continuous auto-restart after overtemperature/power limit fault
LED Mode (CH0–CH1)	Dedicated fast-switching profile with reduced dV/dt and adjusted ILIMH for reliable LED turn-on without inrush stress
Reverse battery protection	Self-turn-on prevention via internal circuitry - no external diode required for -16 V reverse polarity survival
OFF-state open-load detection	Validated at ≤10 µA leakage - identifies disconnected bulbs before ignition cycle begins

Applications

Automotive Turn Indicators

LED Rear Combination Lamps

Use Scenario: Driving P27W incandescent bulbs or paralleled SAE1156/R5W filaments in front/rear turn signals.

IC Role / Device Role / Timing Role: High-side switch with bulb-mode current profiling and thermal foldback during flasher cycling.

Use Value: Enables precise open-load detection before bulb burn-out and maintains stable 34 A surge handling during cold filament inrush.

Use Scenario: Controlling multi-color LED arrays (brake + turn + position) in compact rear lamp modules.

IC Role / Device Role / Timing Role: LED Mode activated on CH0–CH1 for controlled dV/dt and adaptive current limiting during PWM dimming.

Use Value: Eliminates LED pop-on artifacts and prevents false overcurrent trips during rapid LED turn-on transitions.

Body Control Modules (BCM)

Automotive HVAC Blower Control

Use Scenario: Managing auxiliary loads such as door lock actuators, interior lighting, and mirror heaters.

IC Role / Device Role / Timing Role: Quad-channel consolidation replacing discrete relays and fuses with diagnostic visibility.

Use Value: Reduces BOM count by 4× while providing real-time current/voltage/temperature telemetry via MultiSense.

Use Scenario: Regulating 12 V DC blower motor speed in climate control systems using PWM-driven high-side switching.

IC Role / Device Role / Timing Role: High-current (up to 34 A) switching with active thermal management during stall conditions.

Use Value: Prevents thermal runaway during motor jam by combining power limitation and configurable latch-off with FaultRST.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
TPS4H160-Q1	Single-chip quad driver with integrated watchdog timer and SPI diagnostics; no analog MultiSense output	Lacks multiplexed analog feedback - requires external ADC and signal conditioning for current/voltage sensing	Preferred where functional safety (ASIL-B) and programmable diagnostics outweigh analog telemetry needs
BD37101GUL	Quad high-side driver with digital I²C interface; ±5% current sense accuracy; no LED Mode specialization	Requires host MCU for diagnostic polling; no dedicated LED timing configuration	Selected when system-level software control and firmware-upgradable protection thresholds are prioritized

Compared with TPS4H160-Q1 and BD37101GUL, the VNQ7040AY-E uniquely delivers high-precision analog MultiSense feedback with hardware-configurable LED Mode - reducing MCU processing load and enabling deterministic real-time diagnostics without communication overhead.

Availability

VNQ7040AY-E is available at Aetrix Electronics and suitable for automotive body control modules, LED lighting subsystems, and HVAC blower drivers requiring stable component supply across extended temperature ranges (-40 °C to +150 °C).

Supply support for VNQ7040AY-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-grade power ICs, microcontrollers, and sensors with AEC-Q100 qualification expertise.

The VNQ7040AY-E belongs to ST's VIPower® M0-7 family of smart power ICs, engineered specifically for automotive load driving with integrated protection, diagnostics, and energy-efficient high-side switching.

FAQ

What is the purpose of the FaultRST pin?

The FaultRST pin is an active-low input that controls fault recovery behavior. When pulsed high, it unlatches outputs after overtemperature or power-limit faults. If held low continuously, it enables auto-restart mode - automatically re-enabling outputs after fault clearance without MCU intervention. This dual-mode operation supports both fail-safe and self-healing system architectures.

How does LED Mode differ from Bulb Mode?

LED Mode (enabled via LED0/LED1 pins) modifies switching characteristics on channels 0 and 1: it reduces turn-on/turn-off dV/dt to prevent EMI and adjusts current-limit threshold to accommodate low-inductance LED loads. Bulb Mode uses higher dV/dt and standard 34 A ILIMH for incandescent filaments with high cold-resistance inrush. Both modes share identical diagnostic and protection functions.

Can MultiSense be used simultaneously for current, voltage, and temperature sensing?

No - MultiSense is a time-multiplexed analog output. Only one parameter (load current, VCC, or chip temperature) is presented per sampling window, selected by SEL0–SEL2 address bits and enabled by SEn. The host system must sequence address changes and synchronize ADC sampling to extract all three diagnostics within a defined cycle time.

What PCB layout considerations apply to PowerSSO-36?

PowerSSO-36 requires a minimum 2 cm² copper pour under the exposed thermal pad, connected to GND plane via ≥6 thermal vias (0.3 mm diameter). Trace width for OUTPUT pins must support ≥5 A continuous current (≥0.5 mm² cross-section). VCC and GND planes should be solid and symmetrical to minimize loop inductance for transient immunity per ISO 7637-2.

VNQ7040AY-E Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Package/Case:: 36-PowerBFSOP (0.295", 7.50mm Width)

Series:: -

Packaging:: Tube

Product Status:: Discontinued at Digi-Key

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):: 24A

Rds On (Typ):: 40mOhm

Input Type:: Non-Inverting

Features:: 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-36 EPD

VNQ7040AY-E FAQ

1.How can I place an order for VNQ7040AY-E through Aetrix?

Please submit a Request for Quotation (RFQ) for VNQ7040AY-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 VNQ7040AY-E reliable?

The price and inventory of VNQ7040AY-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for VNQ7040AY-E is usually 5 days.

3.What payment methods are accepted for VNQ7040AY-E?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VNQ7040AY-E transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for VNQ7040AY-E?

VNQ7040AY-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your VNQ7040AY-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 VNQ7040AY-E?

For technical support, including VNQ7040AY-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VNQ7040AY-E requirements.

6.How does Aetrix verify that VNQ7040AY-E is sourced from the original manufacturer or authorized distributors?

All VNQ7040AY-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 VNQ7040AY-E meets industry standards.

7.What is the process for return or replacement of VNQ7040AY-E?

All VNQ7040AY-E units undergo pre-shipment inspection (PSI). If there is an issue with VNQ7040AY-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 VNQ7040AY-E part is unused and in its original packaging.

Return procedure for VNQ7040AY-E:

1.Submit a request within 90 days.

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

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