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STMicroelectronics VN7040AJTR
- Part No.:
- VN7040AJTR
- Manufacturer:
- STMicroelectronics
- Package:
- 16-PowerLFSOP (0.154", 3.90mm Width)
- Datasheet:
-
VN7040AJTR.pdf
- Description:
- IC PWR DRVR N-CHAN 1:1 PWRSSO16
- Quantity:
- Payment:
- Shipping:
Inventory:3,233
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Product details
Overview
VN7040AJTR from STMicroelectronics is a single-channel AEC-Q100 qualified smart high-side driver for 12 V automotive grounded loads, featuring MultiSense analog feedback, 40 mΩ typical on-state resistance, 34 A current limitation, and operation across 4–28 V supply range. It delivers precise load current sensing, chip temperature monitoring, and supply voltage feedback via a multiplexed analog output pin, and is specifically designed for automotive turn indicators (P27W/SAE1156/R5W-parallel/LED rear combinations) and protected ADAS sensor/radar supplies.
For engineers reviewing the VN7040AJTR datasheet, VN7040AJTR pinout, VN7040AJTR application, or VN7040AJTR equivalent, key selection considerations include its PowerSSO-16 package thermal performance (Rthj-board = 6.2 °C/W), fault reset functionality via active-low FaultRST, configurable latch-off behavior, and multi-mode diagnostic multiplexing (load current, VCC, TCHIP) with ±5% current sense ratio drift at 4.5 A.
Technical Context
This device integrates VIPower M0-7 technology to combine power switching, protection logic, and analog diagnostics in one monolithic high-side driver. Its architecture includes an internal gate driver with dynamic thermal transient limiting, undervoltage/overvoltage clamping, and a dedicated FaultRST pin that supports both auto-restart and latch-off modes depending on logic state.
The MultiSense subsystem uses three CMOS-compatible control pins (SEn, SEL0, SEL1) to select among four diagnostic channels - proportional load current (K-factor calibrated from 530 to 2650 A/A), VCC/4 voltage feedback, chip temperature (−5.5 mV/K coefficient), and fault-state indication - all delivered through a single analog output pin with defined settling times (e.g., tDSENSE1H = 60 µs).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Operating Voltage | 4–28 V DC: Enables direct integration into 12 V automotive battery systems with robustness against cold-crank (4 V) and load-dump (28 V) transients. |
| On-State Resistance | 40 mΩ typ. @ 2.5 A, 25°C: Limits conduction loss to ≤250 mW at 2.5 A, supporting thermally constrained PCB layouts. |
| Current Limitation | 34 A typ. DC short-circuit current: Provides deterministic overload handling without external fusing for resistive/inductive loads. |
| Standby Current | 0.5 µA max. @ 13 V, 25°C: Enables always-on module designs with negligible battery drain during vehicle sleep mode. |
| Thermal Shutdown | 150–200°C shutdown threshold with 7 K hysteresis: Prevents destructive thermal runaway while allowing safe recovery after fault clearance. |
| MultiSense Accuracy | ±5% current sense ratio drift @ 4.5 A: Enables reliable open-load detection and closed-loop current monitoring without calibration per unit. |
| Switching Energy | 0.32–0.4 mJ turn-on / 0.33–0.4 mJ turn-off: Minimizes EMI and heat generation during PWM-driven LED or solenoid control. |
Pinout & Package
Package: PowerSSO-16 (exposed thermal pad connected to VCC), RoHS-compliant, AEC-Q100 qualified for automotive under-hood use.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Battery supply input | Primary power rail connection; exposed thermal pad tied internally to VCC for enhanced heat dissipation (Rthj-board = 6.2 °C/W). |
| OUTPUT | High-side power output | Drives grounded loads; features integrated reverse-battery diode protection and −0.7 V clamp during inductive flyback. |
| GND | Ground reference | Must be externally reverse-battery protected using diode/resistor network per datasheet recommendation. |
| INPUT | CMOS-compatible control input | Hysteresis-enabled 3 V/5 V logic interface; 0.9 V low / 2.1 V high thresholds ensure noise immunity in automotive environments. |
| MultiSense | Multiplexed analog diagnostic output | Delivers current-proportional IOUT/K, VCC/4, or −5.5 mV/K temperature signal; clamped to −12 V / +7 V for safety. |
| SEn | Sense enable control | Active-high pin enabling MultiSense function; allows OFF-state diagnosis disable during low-power module sleep. |
| SEL0, SEL1 | Multiplexer address inputs | Select diagnostic channel: current (L,L), chip temp (L,H), VCC (H,H), or fault (H,L); compatible with 3 V/5 V CMOS. |
| FaultRST | Fault reset / latch control | Active-low pin; latched faults are cleared by pulse; held low enables auto-restart mode after thermal/current fault recovery. |
Key Features
| Feature | Design Value |
|---|---|
| MultiSense Analog Feedback | Single-pin multiplexed reporting of load current (530–2650 A/A K-factor), VCC/4, and chip temperature (−5.5 mV/K), eliminating need for external ADC channels. |
| Configurable Fault Response | FaultRST pin selects between auto-restart (FaultRST = low) or latch-off (FaultRST = high) after overtemperature or power limitation events. |
| Low-Power Standby | 0.5 µA max. supply current enables permanent connection to battery without compromising vehicle sleep current budgets. |
| Integrated Protection Suite | Combines undervoltage lockout (4 V), overvoltage clamp (41–52 V), fast thermal transient limiting, and reverse-battery readiness with external components. |
| OFF-State Diagnostics | Detects open-load (2–4 V threshold), short-to-VCC, and negative output voltage during inductive turn-off - all without load current flow. |
Applications
| Automotive Turn Indicators | ADAS Radar Power Supply |
|---|---|
|
Use Scenario: Driving P27W incandescent bulbs or parallel SAE1156 + R5W filaments, or high-brightness LED rear combination lamps. IC Role / Device Role / Timing Role: High-side switch with real-time current monitoring to validate bulb/LED status and detect filament breakage or LED string failure. Use Value: Eliminates need for separate current-sense shunts and comparators; enables CAN-based lamp-out reporting via MultiSense analog readback. |
Use Scenario: Providing protected, monitored 12 V supply to millimeter-wave radar modules and camera sensors in ADAS ECUs. IC Role / Device Role / Timing Role: Smart power switch with VCC and TCHIP feedback to detect supply brownouts or thermal derating before radar malfunction occurs. Use Value: Prevents false object detection due to undervoltage-induced radar clock instability; enables predictive thermal throttling via analog temperature slope. |
| Engine Bay Solenoid Control | Body Control Module Load Management |
|
Use Scenario: Switching fuel injector solenoids, turbocharger actuators, or HVAC blend door motors in high-temperature engine compartments. IC Role / Device Role / Timing Role: High-current (34 A peak) high-side driver with dynamic thermal management to sustain duty cycles under 150°C junction conditions. Use Value: Self-limiting thermal response avoids external thermal shutdown circuitry; latch-off mode prevents uncontrolled actuator motion during fault. |
Use Scenario: Managing interior lighting, seat/mirror actuators, and window lift motors in centralized body controllers. IC Role / Device Role / Timing Role: Low-quiescent-current (0.5 µA) switch enabling always-on BMS communication while maintaining <100 µA total module sleep current. Use Value: Supports ISO 16750-2 compliance for long-term battery disconnect; MultiSense open-load detection confirms motor wiring integrity pre-activation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar smart high-side driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| INFINEON BTS7040-1EPP | Higher RON (50 mΩ typ.), no integrated VCC/TCHIP sensing, uses SPI for diagnostics instead of analog multiplexing. | Lacks analog VCC and temperature feedback; requires microcontroller with SPI interface and ADC for current sense scaling. | Prefer when digital bus integration is prioritized over analog simplicity and minimal MCU resource usage. |
| NXP MC33883 | Lower current limit (10 A), SO-8 only, no FaultRST latch control, uses dedicated pins for current/VCC/temp instead of multiplexed analog output. | Not suitable for >20 A loads like turn indicators; lacks configurable latch-off, limiting fault containment in safety-critical modules. | Choose only for low-power body electronics where thermal margin is ample and diagnostic bandwidth is secondary. |
Compared with VN7040AJTR, BTS7040-1EPP trades analog diagnostic simplicity for digital configurability and MC33883 sacrifices current capability and fault control flexibility to reduce package size and cost - making VN7040AJTR optimal for thermally demanding, analog-integrated automotive lighting and ADAS power stages.
Availability
VN7040AJTR is available at Aetrix Electronics and suitable for automotive turn indicator systems, ADAS radar power supplies, and engine bay solenoid control requiring stable component supply, AEC-Q100 qualification, and production-ready thermal performance.
Supply support for VN7040AJTR 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 broad manufacturing scale and automotive qualification expertise.
VN7040AJTR belongs to ST's VIPower family of smart power switches, engineered specifically for automotive high-side load control with integrated protection, diagnostics, and low-power operation in harsh environments.
FAQ
What is the maximum transient voltage the VN7040AJTR can withstand?
The VN7040AJTR supports up to 40 V maximum transient supply voltage per ISO 16750-2 Test B (clamped), with a 28 V maximum jump-start voltage rating. Its internal clamp circuit activates above 41 V (typ.) to protect downstream circuitry during load-dump events without external TVS diodes.
How does the MultiSense pin distinguish between current, voltage, and temperature measurements?
The MultiSense pin outputs different analog signals based on SEL0/SEL1 states: L/L for load current (IOUT/K), L/H for chip temperature (−5.5 mV/K), H/H for VCC/4, and H/L for fault indication. SEn must be high to enable any channel, and settling times range from 20–60 µs depending on mode transition.
Can VN7040AJTR drive inductive loads without external flyback protection?
Yes - the device integrates an internal clamp diode between OUTPUT and VCC, enabling safe energy recirculation during inductive turn-off. Measured VDEMAG is VCC − 41 V (typ.) at 25°C, ensuring controlled voltage rise without external components for typical automotive solenoids and relays.
What is the role of the FaultRST pin in latch-off versus auto-restart configurations?
When FaultRST is held high, the device latches off after overtemperature or overload and remains disabled until a low pulse resets it. When FaultRST is held low, the device automatically restarts after fault clearance - enabling fail-safe behavior in critical lighting systems or controlled recovery in ADAS power rails.
VN7040AJTR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 16-PowerLFSOP (0.154", 3.90mm Width)
- Series:
- VIPower™
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Switch Type:
- General Purpose
- Number of Outputs:
- 1
- Ratio - Input:Output:
- 1:1
- Output Configuration:
- High Side
- Output Type:
- N-Channel
- Interface:
- On/Off
- Voltage - Load:
- 4V ~ 28V
- Voltage - Supply (Vcc/Vdd):
- Not Required
- Current - Output (Max):
- 24A
- Rds On (Typ):
- 40mOhm
- 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
VN7040AJTR FAQ
1.How can I place an order for VN7040AJTR through Aetrix?
Please submit a Request for Quotation (RFQ) for VN7040AJTR 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 VN7040AJTR reliable?
The price and inventory of VN7040AJTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for VN7040AJTR is usually 5 days.
3.What payment methods are accepted for VN7040AJTR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VN7040AJTR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VN7040AJTR?
VN7040AJTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VN7040AJTR 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 VN7040AJTR?
For technical support, including VN7040AJTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VN7040AJTR requirements.
6.How does Aetrix verify that VN7040AJTR is sourced from the original manufacturer or authorized distributors?
All VN7040AJTR 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 VN7040AJTR meets industry standards.
7.What is the process for return or replacement of VN7040AJTR?
All VN7040AJTR units undergo pre-shipment inspection (PSI). If there is an issue with VN7040AJTR, 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 VN7040AJTR part is unused and in its original packaging.
Return procedure for VN7040AJTR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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