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

STMicroelectronics VNQ6040S-E

Name: VNQ6040S-E
Brand: STMicroelectronics
SKU: VNQ6040S-E
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: VNQ6040S-E

Manufacturer:: STMicroelectronics

Category:: Power Distribution Switches, Load Drivers

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

Datasheet:: VNQ6040S-E.pdf

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

Quantity:: RFQ Add To RFQ list

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Product details

Overview

VNQ6040S-E from STMicroelectronics is a quad-channel high-side driver IC built on VIPower® technology, designed for driving resistive or inductive loads (e.g., automotive lamps, solenoids, valves) directly connected to ground. It delivers 4 A continuous output current per channel, supports 16-bit ST-SPI interface with real-time diagnostics, and features programmable BULB/LED modes with integrated PWM and phase-shift generation.

For engineers reviewing the VNQ6040S-E datasheet, VNQ6040S-E pinout, VNQ6040S-E application, or VNQ6040S-E equivalent, key selection considerations include its 4-channel independent control, multiplexed analog current sense per channel, fail-safe limp-home mode during digital supply loss, and robust protection against overtemperature, open-load (ON/OFF-state), short-to-VCC/GND, load dump, and reverse battery - all without external components.

Technical Context

The device operates in five distinct modes - Normal, Standby, Sleep 1/2, Fail-Safe (limp-home), and Battery Undervoltage - each governed by internal state machine logic and configurable via SPI registers. Its diagnostic architecture enables synchronous sampling of load current via CS_SYNC and multiplexed CURRENT-SENSE pin, with real-time reporting of open-load (both states), overtemperature, overload, and communication errors through dedicated status registers (e.g., OLFLTR, OTFLTR, OVLFLTR).

Protection is implemented at silicon level: power limitation dynamically caps dissipation before thermal shutdown; overtemperature response is user-selectable (latched-off or auto-restart); reverse-battery immunity is achieved via self-turn-on of power outputs; and undervoltage shutdown activates below 4.5 V on VDD while maintaining VCC operation down to 5.5 V.

Key Specifications

Parameter	Value and Actual Design Meaning
Channels	4 independent high-side outputs with individual SPI-controlled enable and diagnostics
Continuous Output Current	4 A per channel (T_A ≤ 85 °C, R_θJA = 25 °C/W)
Supply Voltage Range (VCC)	5.5 V to 28 V - supports automotive battery transients including load dump (ISO 7637-2 Pulse 5a)
SPI Interface	16-bit ST-SPI (mode 0, CPOL=0, CPHA=0) with 10 MHz max clock, supporting read/write/status-clear operations
Current Sense Accuracy	±10% full-scale error across 8–18 V VCC range, multiplexed to single CURRENT-SENSE pin
Thermal Shutdown	Configurable latched-off or auto-restart at T_J ≥ 175 °C ± 10 °C
Standby Current	≤ 10 µA typical - enables low-power vehicle-off monitoring

Pinout & Package

Package: PowerSSO-36 (exposed die pad, thermally enhanced SO-36 variant, RoHS-compliant ECOPACK®).

Pin/Terminal	Circuit Role	Design Meaning
VCC	Main power supply input	Accepts 5.5–28 V; protected against load dump (up to 60 V/100 ms) and reverse battery
VDD	Digital supply input	3.3 V or 5 V logic supply; undervoltage lockout at ~4.5 V triggers fail-safe mode
OUT0–OUT3	High-side power outputs	Each drives grounded loads; rated 4 A continuous, 10 A peak (100 ms)
IN0–IN3	Limp-home direct control inputs	Hardware override pins active only in fail-safe mode; TTL/CMOS compatible
CSN	SPI chip select	Active-low; initiates SPI frame; timeout monitoring enables automatic fail-safe entry
SDI/SDO/SCK	SPI data in/out and clock	Full-duplex 16-bit interface; SDO supports daisy-chain configuration
CURRENT-SENSE	Analog current feedback output	Multiplexed channel current sense (0.5 V/A nominal); synchronized by CS_SYNC
CS_SYNC	Current sense synchronization	Open-drain signal indicating when current sense is valid for sampling
GND	Power and analog ground	Single ground plane; exposed pad must be soldered for thermal performance

Key Features

Feature	Design Value
Programmable BULB/LED mode	Optimized switching profiles and current regulation for incandescent lamp inrush suppression or constant-current LED drive
Integrated PWM & phase shift	On-chip 160 Hz fallback PWM generator with per-channel duty cycle (0–100%) and phase offset (0–360°) control via SPI registers
Advanced limp-home functionality	Automatic transition to hardware-controlled INx pins upon VDD loss, memory reset, or CSN timeout - ensures critical actuation continuity
Multiplexed proportional current sense	Single analog pin delivers scaled load current (0.5 V/A) for all 4 channels with <1 µs propagation delay and synchronous sampling window
Reverse-battery protection	No external diodes required; power outputs self-turn-on to clamp negative VCC transients down to –18 V

Applications

Automotive Front Lighting Control

Industrial Solenoid Sequencing

Use Scenario: Driving halogen headlamp filaments with inrush current limiting and filament break detection.

IC Role / Device Role / Timing Role: High-side switch with BULB-mode PWM ramp-up, open-load ON-state detection, and real-time current monitoring via SPI.

Use Value: Eliminates need for external current-sense shunts and discrete protection ICs while enabling diagnostics compliant with UNECE R128.

Use Scenario: Controlling pneumatic valve banks in factory automation with precise timing and fault logging.

IC Role / Device Role / Timing Role: Quad-channel high-side driver with programmable phase-shifted PWM for staggered actuation and thermal load balancing.

Use Value: Reduces peak system current by >30% versus simultaneous switching, avoiding PSU oversizing and thermal derating.

Commercial Vehicle Brake Light Management

Off-Highway Equipment Lamp Monitoring

Use Scenario: Managing stop/tail/turn lamps in heavy-duty trucks subject to severe voltage transients and EMI.

IC Role / Device Role / Timing Role: Fault-tolerant high-side driver with load-dump protection, reverse-battery immunity, and synchronous open-load OFF-state detection.

Use Value: Maintains lamp status visibility during battery disconnection events and eliminates false open-circuit alarms during vibration-induced intermittent faults.

Use Scenario: Monitoring LED work lights on construction machinery where ambient temperature exceeds 105 °C.

IC Role / Device Role / Timing Role: Thermally robust high-side driver with auto-restart thermal shutdown and case overtemperature warning via SPI status register (OTFLTR).

Use Value: Enables predictive maintenance alerts before thermal shutdown occurs, reducing unplanned downtime in harsh environments.

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	4-channel, 2.8 A/channel, 40 V abs max, SPI+PWM, no BULB-mode optimization	Lacks dedicated lamp inrush management; requires external current sense for diagnostics	Preferred for lower-current 12 V systems needing AEC-Q100 Grade 0 qualification and smaller footprint
BD3903FV-M	Quad high-side, 3 A/channel, I²C interface, no integrated PWM generator or phase shift	Supports only basic ON/OFF control; no synchronous current sense or limp-home mode	Suitable for cost-sensitive non-automotive industrial use where SPI diagnostics and fail-safe continuity are not required

Compared with TPS4H160-Q1 and BD3903FV-M, the VNQ6040S-E uniquely integrates lamp-specific BULB-mode timing, per-channel phase-shifted PWM, and hardware-based limp-home override - making it the only option supporting full diagnostic continuity and thermal resilience in demanding automotive lighting ECU designs.

Availability

VNQ6040S-E is available at Aetrix Electronics and suitable for automotive lighting control, industrial solenoid sequencing, commercial vehicle brake light management, and off-highway equipment lamp monitoring requiring stable component supply across extended temperature and transient-voltage conditions.

Supply support for VNQ6040S-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 and AEC-Q100-qualified product lines.

The VNQ6040S-E belongs to ST's VIPower® M0-7 family of intelligent power switches, engineered specifically for automotive body electronics applications demanding high reliability, integrated diagnostics, and fail-operational behavior under electrical stress.

FAQ

What is the maximum safe operating junction temperature for VNQ6040S-E?

The VNQ6040S-E has a thermal shutdown threshold of 175 °C ± 10 °C, with automatic restart enabled by default unless configured otherwise via the Automatic Shutdown Control Register (ASDTCR). The device remains fully functional up to 150 °C junction temperature under continuous operation, validated per its thermal resistance (R_θJA = 25 °C/W on 2-layer PCB with 200 mm² copper pour).

Does VNQ6040S-E require external components for reverse-battery protection?

No. Reverse-battery protection is implemented internally: when VCC goes negative, the power outputs self-turn-on to clamp the voltage, limiting reverse current without external diodes or MOSFETs. This capability is verified per ISO 16750-2 Annex D (–18 V, 60 s) and requires no additional circuitry beyond proper PCB layout of the exposed thermal pad.

How does the open-load detection work in OFF-state?

OFF-state open-load detection applies a low-current test pulse (<1 mA) between OUTx and GND while the channel is disabled. If no return current is sensed, the device flags an open-circuit condition in the STKFLTR register. Detection sensitivity is programmable (thresholds from 10 kΩ to 1 MΩ) and functions across the full 8–18 V VCC range, enabling reliable broken-wire detection even with long harnesses.

Can VNQ6040S-E drive inductive loads like fuel injectors without external flyback diodes?

Yes. The VNQ6040S-E integrates active demagnetization circuitry that safely clamps inductive kickback energy during turn-off. Maximum demagnetization energy is specified at 100 mJ per channel (VCC = 13.5 V), sufficient for typical 12 V automotive solenoids and injectors. External diodes are unnecessary unless energy exceeds this rating or faster decay is required.

VNQ6040S-E Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

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

Series:: VIPower™

Packaging:: Tube

Product Status:: Obsolete

Switch Type:: General Purpose

Number of Outputs:: 4

Ratio - Input:Output:: 1:1

Output Configuration:: High Side

Output Type:: N-Channel

Interface:: SPI

Voltage - Load:: 5V ~ 28V

Voltage - Supply (Vcc/Vdd):: -

Current - Output (Max):: 25A

Rds On (Typ):: 35mOhm

Input Type:: -

Features:: Auto Restart

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

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: PowerSSO-36 EPD

VNQ6040S-E FAQ

1.How can I place an order for VNQ6040S-E through Aetrix?

Please submit a Request for Quotation (RFQ) for VNQ6040S-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 VNQ6040S-E reliable?

The price and inventory of VNQ6040S-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for VNQ6040S-E is usually 5 days.

3.What payment methods are accepted for VNQ6040S-E?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VNQ6040S-E transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for VNQ6040S-E?

VNQ6040S-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your VNQ6040S-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 VNQ6040S-E?

For technical support, including VNQ6040S-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VNQ6040S-E requirements.

6.How does Aetrix verify that VNQ6040S-E is sourced from the original manufacturer or authorized distributors?

All VNQ6040S-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 VNQ6040S-E meets industry standards.

7.What is the process for return or replacement of VNQ6040S-E?

All VNQ6040S-E units undergo pre-shipment inspection (PSI). If there is an issue with VNQ6040S-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 VNQ6040S-E part is unused and in its original packaging.

Return procedure for VNQ6040S-E:

1.Submit a request within 90 days.

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

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