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HomeProductsIntegrated Circuits (ICs)PMIC - Power Distribution Switches, Load DriversVN7040AJTR
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VN7040AJTR - STMicroelectronics

Manufacturer Part Number
VN7040AJTR
Manufacturer
STMicroelectronics
Allelco Part Number
32D-VN7040AJTR
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
45,473 pcs available, New & Original
Parts Description
IC PWR DRVR N-CHAN 1:1 PWRSSO16
Package
PowerSSO-16
Data sheet
VN7040AJTR.pdf

PCN Assembly/Origin

2.73KHz.pdf
RoHs Status
ROHS3 Compliant
Compare
Our certification
In stock: 45473
  • Unit Price: $1.20
  • Subtotal: $0.00

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Quantity Unit Price Ext. Price
1+ $1.20 $1.20
10+ $1.037 $10.37
30+ $0.934 $28.02
100+ $0.83 $83.00
500+ $0.782 $391.00
1000+ $0.763 $763.00
The above prices does not include taxes and freight rates, which will be calculated on the order pages.

Specifications

VN7040AJTR Tech Specifications
STMicroelectronics - VN7040AJTR technical specifications, attributes, parameters and parts with similar specifications to STMicroelectronics - VN7040AJTR

Product Attribute Attribute Value
Manufacturer STMicroelectronics
Voltage - Supply (Vcc/Vdd) Not Required
Voltage - Load 4V ~ 28V
Switch Type General Purpose
Supplier Device Package PowerSSO-16
Series VIPower™
Rds On (Typ) 40mOhm
Ratio - Input:Output 1:1
Package / Case 16-PowerLFSOP (0.154', 3.90mm Width)
Package Tape & Reel (TR)
Output Type N-Channel
Product Attribute Attribute Value
Output Configuration High Side
Operating Temperature -40°C ~ 150°C (TJ)
Number of Outputs 1
Mounting Type Surface Mount
Interface On/Off
Input Type Non-Inverting
Features Auto Restart, Status Flag
Fault Protection Current Limiting (Fixed), Open Load Detect, Over Temperature, Over Voltage, UVLO
Current - Output (Max) 24A
Base Product Number VN7040

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status ROHS3 Compliant
Moisture Sensitivity Level (MSL) 3 (168 Hours)
REACH Status REACH Unaffected
ECCN EAR99
HTSUS 8542.39.0001

Parts Introduction

VN7040AJTR Image
VN7040AJTR (1)

Manufacturer Part Number

VN7040AJTR

Manufacturer

STMicroelectronics

Introduction

VN7040AJTR is a power distribution switch designed for Power Management applications.

Product Features and Performance

General Purpose Switch

Single Output

High-Side Configuration

N-Channel Output Type

On/Off Interface

Auto Restart and Status Flag Features

Product Advantages

High current output capacity of 24A

Low On-resistance of 40mOhm

Integrated Fault Protection

Key Technical Parameters

4V to 28V Voltage Load Range

Current - Output (Max): 24A

Rds On (Typ): 40mOhm

-40°C to 150°C Operating Temperature Range

Quality and Safety Features

Current Limiting (Fixed)

Open Load Detect

Over Temperature Protection

Over Voltage Protection

Under Voltage Lock Out (UVLO)

Compatibility

Compatible with a wide range of load voltages

Application Areas

Power Management for automotive and industrial

Product Lifecycle

Active status

Not nearing discontinuation

Several Key Reasons to Choose This Product

Advanced Power Management Capabilities

Versatile and can work with various voltage loads

Surface Mount Technology for easy assembly

Robust Operating Temperature Range suitable for harsh environments

Protection Features to ensure long-term reliability

Frequently Asked Questions(FAQ)

What are the key thermal and electrical performance characteristics of the VN7040AJTR that influence its suitability in high-current automotive applications?
The VN7040AJTR features a typical Rds(on) of 40mΩ at 10V gate drive, enabling efficient power dissipation under continuous load. With a maximum output current of 24A and an operating junction temperature range from -40°C to +150°C (TJ), it is engineered for robust performance in harsh environments such as those encountered in automotive systems. The device’s PowerSSO-16 package offers improved thermal conductivity compared to standard SOIC variants, facilitating heat dissipation in space-constrained designs. Its integrated over-temperature protection ensures safe operation without external thermal management under fault conditions.
How does the VN7040AJTR compare to alternative VIPOWER™ devices like the VN7050AJ in terms of fault detection and system reliability?
While both the VN7040AJTR and VN7050AJ belong to STMicroelectronics' VIPOWER™ family, the VN7040AJTR provides a balanced set of protections including fixed current limiting, open-load detection, overvoltage, undervoltage lockout (UVLO), and overtemperature shutdown. In contrast, the VN7050AJ typically offers higher current ratings but may lack certain diagnostic features such as precise status flag reporting. The VN7040AJTR’s combination of comprehensive protection mechanisms and deterministic response during faults enhances system-level reliability, particularly in applications where real-time monitoring and automatic restart functionality are critical, such as in motor control or lighting systems.
What design considerations should be made when integrating the VN7040AJTR into a high-side switching circuit with inductive loads?
When using the VN7040AJTR to drive inductive loads such as motors or solenoids, attention must be paid to flyback diode placement and gate drive stability. Although the device includes internal clamp diodes for freewheeling currents, external Schottky diodes can further reduce recovery losses. The 40mΩ Rds(on) minimizes conduction losses, but switching transients must be managed via proper PCB layout—keeping source connections short and using adequate ground planes. Additionally, the on/off interface requires a clean digital signal; noise on the input may trigger unintended state changes, especially given the absence of hysteresis in basic implementations. Layout parasitics can significantly affect switching speed and efficiency, so minimizing trace inductance around the drain-source path is essential.
Can the VN7040AJTR operate reliably in environments with significant voltage transients, and what protective features mitigate risk?
Yes, the VN7040AJTR is designed to withstand voltage transients common in automotive and industrial settings. It supports a load voltage range of 4V to 28V, accommodating systems such as 12V or 24V rails subject to load dump events. The device incorporates overvoltage protection (OVP) that disables the output if the drain-source voltage exceeds safe limits, preventing damage. Combined with UVLO and overcurrent limiting, these safeguards ensure graceful degradation rather than catastrophic failure during abnormal conditions. However, transient suppression components like TVS diodes should still be used at the load terminals for added robustness beyond what the IC alone can provide.
What is the significance of the non-inverting input type in the VN7040AJTR, and how does it affect control logic design?
The VN7040AJTR uses a non-inverting input configuration, meaning a logic-high signal at the control pin turns the MOSFET fully on, while a low signal turns it off. This simplifies interfacing with microcontrollers or logic gates that output active-high signals without requiring inversion circuitry. For negative logic systems or fail-safe architectures, an external inverter may be needed. The simplicity reduces component count and potential points of failure, contributing to overall system reliability. However, designers must ensure the control signal meets the minimum threshold for guaranteed turn-on across process variations and temperature extremes.
How does the packaging choice—PowerSSO-16 versus alternatives like TSSOP or SOIC—impact the VN7040AJTR’s thermal and electrical performance?
The PowerSSO-16 package used in the VN7040AJTR features exposed thermal pads and optimized leadframe geometry, providing lower thermal resistance than standard SOIC or TSSOP packages of similar pin count. This allows the VN7040AJTR to sustain higher continuous current levels without excessive junction heating. Electrically, the shorter leads reduce parasitic inductance, improving switching performance and reducing ringing in fast-switching applications. While the footprint is larger than some compact alternatives, the enhanced thermal and electrical characteristics justify its use in medium-power applications where reliability and efficiency outweigh size constraints.
What role does the status flag feature play in system diagnostics when using the VN7040AJTR?
The status flag in the VN7040AJTR provides real-time feedback on internal fault conditions such as overtemperature, overcurrent, or open-load states. By monitoring this open-drain output, a microcontroller can detect anomalies before they escalate into system failures. This enables predictive maintenance, fault logging, and user notification in embedded systems. Unlike simple thermal shutdown without indication, the status flag allows distinction between temporary overloads and persistent faults, improving troubleshooting accuracy. Integration requires pull-up resistor selection based on supply voltage and desired assertion level, typically done in firmware-controlled monitoring loops.
Is the VN7040AJTR suitable for use in battery-powered devices where quiescent current matters?
No, the VN7040AJTR is not optimized for ultra-low-power applications due to its high-current driver architecture and integrated protection circuits. Since it operates without an explicit Vcc supply and relies on load voltage for biasing, there is no traditional quiescent current specification in the conventional sense. Instead, the device draws current proportional to gate charge and switching frequency, which can become significant at high duty cycles or frequencies. Therefore, it is better suited for fixed-voltage systems like automotive, industrial automation, or telecom power distribution rather than energy-sensitive portable electronics.
What precautions should be taken regarding moisture sensitivity when handling VN7040AJTR components in mass production?
The VN7040AJTR has an MSL rating of 3, indicating it can withstand up to 168 hours of exposure to ambient humidity before reflow soldering is required. In manufacturing environments, this means components should be stored in dry cabinets and retrieved just prior to placement. If storage exceeds 168 hours post-opening, a baking step may be necessary to prevent popcorning during reflow. Proper handling protocols include using anti-static trays and maintaining controlled atmosphere during assembly to preserve solder joint integrity and prevent delamination.
How does the auto-restart function in the VN7040AJTR improve system resilience compared to latch-off drivers?
Unlike latch-off drivers that require manual intervention after a fault condition, the VN7040AJTR implements auto-restart logic that automatically attempts to re-enable the output once the fault clears—such as after cooling down from an over-temperature event or resolving a short-circuit. This behavior enhances system availability in unattended environments by reducing downtime. However, repeated cycling under sustained fault conditions may still stress the device; thus, it should be paired with external timers or software logic to implement retry limits. This makes the VN7040AJTR ideal for applications where continuous operation is prioritized over immediate fault isolation.
What are the implications of the 1:1 input-to-output ratio in the VN7040AJTR for digital control interface design?
The 1:1 ratio means the input directly controls the output state without amplification or buffering, simplifying signal conditioning requirements. A single digital line from a GPIO or logic IC suffices to enable or disable the switch. There is no need for level shifting or additional gain stages, reducing BOM cost and complexity. However, since the input is sensitive to noise and ESD, careful routing and possibly series damping resistors may be required near long traces or noisy environments. The direct coupling also implies that any voltage spikes on the control line could couple into the load side, necessitating isolation techniques if needed.
How does the VN7040AJTR handle reverse polarity events at the load terminal, and what protection does it offer?
The VN7040AJTR does not inherently protect against reverse polarity at the load terminal. If the load voltage is reversed beyond typical thresholds, internal parasitic diodes or substrate paths may conduct, potentially leading to latch-up or device destruction. To mitigate this, external reverse polarity protection such as series P-channel MOSFETs or diodes should be implemented upstream of the load. The device’s internal protections do not cover input-side overvoltage in all configurations, so additional circuitry remains necessary for complete system robustness in applications where reverse connection risk exists.
What are the trade-offs between using the VN7040AJTR with external gate resistors versus relying on its default switching characteristics?
Omitting external gate resistors results in faster switching transitions, which improves efficiency in high-frequency applications by reducing dead time and cross-conduction risks. However, it increases electromagnetic interference (EMI) and ringing due to sharper dv/dt and di/dt rates. Adding small gate resistors (e.g., 5–22Ω) dampens oscillations and softens edges, lowering EMI but slightly increasing switching losses. For the VN7040AJTR, which lacks built-in gate resistance control, this trade-off must be evaluated based on target switching frequency, load inductance, and regulatory EMI requirements. Most industrial designs opt for moderate gate resistance to balance performance and compliance.
How does the VN7040AJTR perform under partial load conditions, and what impact does this have on system efficiency?
Under light loads, the VN7040AJTR maintains high efficiency due to its low Rds(on) of 40mΩ, resulting in minimal conduction losses even when delivering small currents. However, switching losses become proportionally more significant at lower duty cycles, especially if operating above tens of kHz. For very light loads, discontinuous conduction mode or burst-mode alternatives might yield better efficiency, but the VN7040AJTR lacks such modulation features. Thus, it is best deployed in applications with moderate to full load utilization where conduction dominates total loss budget. Efficiency curves show optimal performance above ~2A continuous load.
What considerations apply to PCB land pattern design for the VN7040AJTR’s PowerSSO-16 package?
The PowerSSO-16 package requires careful attention to thermal pad soldering to ensure reliable heat transfer from the die to the board. The exposed pad must be connected to a large copper area with multiple vias to inner or bottom layers for effective thermal dissipation. Solder paste volume should be sufficient to fill gaps without causing bridging on adjacent pins. Mechanical stability is enhanced by adhering the thermal pad firmly, but over-tightening during reflow may cause cracking. Standard IPC-7351 guidelines adapted for PowerSSO footprints are recommended, along with visual inspection post-assembly to verify void-free attachment.
Can the VN7040AJTR be paralleled to increase current handling, and what challenges arise?
Paralleling the VN7040AJTR is generally discouraged due to mismatched Rds(on) and thermal coefficients among devices. Even slight variations in threshold voltage or package resistance lead to unequal current sharing, causing one device to carry disproportionately higher current and potentially failing first. Without sophisticated current balancing or feedback loops, parallel operation introduces reliability risks. Instead, designers should select higher-rated VIPOWER™ parts (e.g., VN7050AJ) or dedicated multi-phase drivers for increased current capability. The VN7040AJTR’s internal protections do not coordinate across channels, making shared fault responses unpredictable in multi-device configurations.
How does the RoHS3 compliance of the VN7040AJTR affect material compatibility in lead-free assembly processes?
The VN7040AJTR complies with RoHS3 standards, meaning it contains no restricted substances including lead, mercury, cadmium, hexavalent chromium, PBB, PBDE, and four phthalates. This ensures compatibility with lead-free soldering profiles such as SAC305 (Sn96.5Ag3Cu0.5). During reflow, the device can withstand peak temperatures up to 260°C for short durations, aligning with industry-standard thermal profiles. However, prolonged exposure to elevated temperatures may degrade bond wires or encapsulation materials; hence, process engineers should validate their reflow profile against the manufacturer’s recommendations to avoid hidden reliability issues.
What are the implications of the EAR99 classification for the export of VN7040AJTR-based designs?
The VN7040AJTR carries an ECCN of EAR99, indicating it is not subject to strict U.S. export controls under the Export Administration Regulations. This simplifies global distribution and integration into international products without requiring complex licensing procedures. However, end-use restrictions may still apply depending on final application—particularly in military, aerospace, or nuclear sectors—even though the component itself is broadly available. Designers should verify compliance with local regulations in target markets, especially when incorporating the VN7040AJTR into systems destined for sensitive environments.

Parts with Similar Specifications

The three parts on the right have similar specifications to STMicroelectronics VN7040AJTR

Product Attribute VN7040AJTR-E VN7040ASTR-E VN7020AJTR VN7020AJTR-E
Part Number VN7040AJTR-E VN7040ASTR-E VN7020AJTR VN7020AJTR-E
Manufacturer STMicroelectronics STMicroelectronics STMicroelectronics STMicroelectronics
Base Product Number - DAC34H84 MAX500 ADS62P42
Ratio - Input:Output - - - -
Rds On (Typ) - - - -
Mounting Type - Surface Mount Through Hole Surface Mount
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C
Voltage - Supply (Vcc/Vdd) - - - -
Supplier Device Package - 196-NFBGA (12x12) 16-PDIP 64-VQFN (9x9)
Features - - - Simultaneous Sampling
Input Type - - - Differential
Series - - - -
Output Type - Current - Unbuffered Voltage - Buffered -
Current - Output (Max) - - - -
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Interface - - - -
Voltage - Load - - - -
Output Configuration - - - -
Fault Protection - - - -
Number of Outputs - - - -
Switch Type - - - -

VN7040AJTR Datasheet PDF

Download VN7040AJTR pdf datasheets and STMicroelectronics documentation for VN7040AJTR - STMicroelectronics.

PCN Packaging
Material Barrier Bag 17/Dec/2020.pdf Mult Dev Label Chgs 29/Oct/2020.pdf
PCN Assembly/Origin
2.73KHz.pdf

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Customer Reviews

Evaluation: 10 Articles

  • Emil***rperTech
    Jun 23, 2026

    Works exactly as described. I used it as a USB-to-SPI bridge in a small MCU development project and communication was stable from the first setup.

  • Liam***terTech
    Jun 15, 2026

    Used this CPLD in a logic control project. Programming was straightforward and signal timing matched the design requirements.

  • Nath***rooks
    Jun 11, 2026

    Installed this power component in a converter board. Output remained stable under different load conditions and thermal performance was better than expected.

  • Dani***alkerTech
    Jun 1, 2026

    Product works, but setup took more effort than expected. Once configured the MCU ran reliably, although documentation support felt older compared with newer platforms. Fine for maintenance projects.

  • Yuki***aka88
    May 26, 2026

    信号通信プロジェクトでこのRS-485トランシーバーを使用しました。設置は簡単で、長距離ケーブルでも通信は安定していました。消費電力も、以前使用していたものより低くなっています。

  • Stev***aker
    May 20, 2026

    Solid diode for power rectification. Works well in switching circuits.

  • Bran***Lewis
    May 11, 2026

    Compact FPGA with good performance. Suitable for basic signal processing tasks.

  • Oliv***arris
    May 7, 2026

    Reliable I/O expander. Works well in embedded control applications.

  • Jess***Jones
    Apr 17, 2026

    It offers good value for the price, and the specifications match the description. I’ve been using it for two days with no issues, and I’ll definitely buy it again if I need it in the future.

  • Mich***Smith
    Apr 17, 2026

    Shipping was on time, the component pins are neatly aligned, and I tested 10 of them with a multimeter—all readings were within the specified range. Highly recommended.

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VN7040AJTR Image

VN7040AJTR

STMicroelectronics
32D-VN7040AJTR

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