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STMicroelectronics VN7050AJTR
- Part No.:
- VN7050AJTR
- Manufacturer:
- STMicroelectronics
- Package:
- 16-PowerLFSOP (0.154", 3.90mm Width)
- Datasheet:
-
VN7050AJTR.pdf
- Description:
- IC PWR DRVR N-CHAN 1:1 PWRSSO16
- Quantity:
- Payment:
- Shipping:
Inventory:16,839
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Product details
Overview
VN7050AJTR from STMicroelectronics is a single-channel AEC-Q100 qualified smart high-side driver for 12 V automotive grounded loads, featuring MultiSense analog feedback, 50 mΩ typical on-state resistance, 30 A current limitation, and operation across 4–28 V supply range-designed specifically for turn indicators (P27W/SAE1156/LED rear combinations) and protected ADAS sensor/radar supplies.
For engineers reviewing the VN7050AJTR datasheet, VN7050AJTR pinout, VN7050AJTR application, or VN7050AJTR equivalent, this device delivers multiplexed diagnostic feedback (load current, VCC, chip temperature), configurable latch-off on overtemperature/power limitation, reverse battery protection support, and CMOS-compatible 3 V/5 V control interface with hysteresis.
Technical Context
The VN7050AJTR integrates ST's VIPower M0-7 technology to combine power switching, real-time thermal management, and analog diagnostics in one die. Its MultiSense architecture uses a single analog output pin (MultiSense) to deliver proportional current sense (K-factor calibrated from 0.01 A to 4.5 A), VCC/4 voltage feedback, and −5.5 mV/K chip temperature sensing-all selectable via SEL0/SEL1 logic inputs.
Protection logic includes undervoltage shutdown (4 V trip, 0.3 V hysteresis), clamped overvoltage (40 V transient), self-limiting fast thermal transients, and fault detection for short-to-VCC, OFF-state open-load, and short-to-ground-with dedicated FaultRST pin enabling either auto-restart or latched fault recovery.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Operating Voltage | 4–28 V DC: supports full automotive battery range including cold-crank (4 V) and load-dump (28 V). |
| On-State Resistance | 50 mΩ typ @ 2 A, 25°C: enables <100 mV drop at 2 A, minimizing conduction loss and heat generation. |
| Current Limitation | 30 A typ DC short-circuit limit: sustains brief high-current faults without destructive failure. |
| Standby Current | 0.5 µA max @ 13 V, 25°C: ensures ultra-low quiescent draw for always-on vehicle modules. |
| MultiSense Accuracy | ±5% uncalibrated current sense up to 4.5 A: provides reliable real-time load monitoring without external shunt calibration. |
| Thermal Shutdown | 150–200°C trip range with 7 K hysteresis: prevents thermal runaway while allowing safe recovery after cooling. |
| Fault Reset Time | 3–20 µs response to FaultRST low pulse: enables rapid system-level fault recovery in safety-critical timing loops. |
Pinout & Package
Package: PowerSSO-16 (exposed tab connected to VCC); thermally optimized for automotive under-hood environments with Rthj-board = 6.8 °C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Battery supply input | Primary power rail; exposed tab connection enables low-inductance, high-current path and thermal dissipation. |
| OUTPUT | High-side switched output | Drives grounded automotive loads; integrates reverse-battery diode protection and clamp circuitry. |
| GND | Ground reference | Must be externally reverse-battery protected; serves as return path for control logic and sense circuits. |
| INPUT | CMOS-compatible enable input | Hysteresis (0.2 V) prevents noise-induced switching; compatible with 3 V/5 V microcontrollers. |
| MultiSense | Multiplexed analog diagnostic output | Delivers proportional current (IOUT/K), VCC/4, or chip temperature (−5.5 mV/K) based on SEL0/SEL1 state. |
| SEn | Sense enable control | Active-high signal enabling MultiSense function; allows OFF-state diagnosis disable during low-power modes. |
| SEL0, SEL1 | Multiplexer address inputs | Select diagnostic channel: current (LL), chip temp (LH), VCC (HH); unused pins pulled to GND via 15 kΩ resistors. |
| FaultRST | Fault reset/latch control | Active-low pin: pulsed low unlatches output; held low enables auto-restart mode after fault clearance. |
Key Features
| Feature | Design Value |
|---|---|
| MultiSense Analog Feedback | Single-pin multiplexed reporting of load current (±5% uncalibrated), VCC/4, and chip temperature (−5.5 mV/K) reduces BOM count and PCB area vs discrete sensing. |
| Configurable Fault Recovery | FaultRST pin supports both auto-restart (for transient faults) and latched-off (for persistent faults), enabling flexible system-level safety strategies. |
| Ultra-Low Standby Consumption | 0.5 µA max standby current extends battery life in always-on modules such as body controllers and ADAS domain ECUs. |
| Reverse Battery Protection Ready | GND pin designed for external diode/resistor network-enables robust operation in vehicles with reversed jumper cable scenarios. |
| AEC-Q100 Grade 0 Qualification | Rated for −40°C to +150°C junction temperature: validated for under-hood placement in engine control, lighting, and radar power domains. |
Applications
| Automotive Turn Indicators | ADAS Radar Power Supply |
|---|---|
|
Use Scenario: Driving P27W incandescent or SAE1156 LED rear combination lamps with PWM dimming and thermal derating. IC Role / Device Role / Timing Role: High-side switch with integrated current limiting and open-load detection to prevent lamp-out false alarms and thermal runaway. Use Value: Eliminates need for external current-sense resistor and comparator; enables real-time filament/LED health monitoring via MultiSense current feedback. |
Use Scenario: Providing protected, diagnostics-enabled 12 V supply to 77 GHz automotive radar modules requiring stable power and fault logging. IC Role / Device Role / Timing Role: Smart power switch with VCC/4 feedback and chip temperature sensing to detect supply sag or thermal throttling before radar malfunction. Use Value: Enables predictive maintenance by correlating VCC droop and junction temperature rise during radar transmit bursts-no additional sensors required. |
| Body Control Module Outputs | Electric Power Steering (EPS) Auxiliary Loads |
|
Use Scenario: Controlling resistive (heated mirrors), inductive (door lock solenoids), and capacitive (LED interior lighting) loads in centralized body controllers. IC Role / Device Role / Timing Role: Single-channel protected driver with short-to-VCC and OFF-state open-load detection to distinguish wiring faults from load failures. Use Value: Reduces diagnostic ambiguity: MultiSense voltage level identifies whether open-circuit occurs at connector (VOUT ≈ VCC) or load (VOUT ≈ 0 V) during OFF state. |
Use Scenario: Powering EPS motor auxiliary circuits (e.g., torque sensor bias, CAN transceiver, position encoder) with fail-safe shutdown capability. IC Role / Device Role / Timing Role: Safety-relevant high-side driver with configurable latch-off and fast fault reset (<20 µs) to meet ASIL-B timing constraints. Use Value: FaultRST pin allows coordinated reset with main EPS MCU-ensuring synchronized recovery after overtemperature events without watchdog timeout. |
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 |
|---|---|---|---|
| VN7050ASPTR | Same silicon, SO-8 package (vs PowerSSO-16); higher Rthj-amb (67.5 °C/W); no SEL0/SEL1 or chip temperature sensing. | Limited to basic current/VCC feedback only; unsuitable for thermal-aware ADAS or EPS applications requiring junction temperature monitoring. | Select when space-constrained PCB layout prioritizes SO-8 footprint and thermal requirements are less stringent (e.g., cabin modules). |
| TLE7231EM | Infineon device; 60 mΩ RON; no analog MultiSense-uses digital SPI for diagnostics; 40 V max transient rating. | Requires external MCU SPI interface and firmware overhead for diagnostics; lacks analog VCC/temperature feedback for passive monitoring. | Choose when system already uses SPI-based diagnostics infrastructure and analog multiplexing adds complexity to signal chain. |
Compared with VN7050ASPTR, the VN7050AJTR adds chip temperature sensing and VCC feedback via SEL0/SEL1 addressing-critical for thermal derating in radar/EPS. Versus TLE7231EM, it eliminates SPI dependency and enables direct analog monitoring, reducing MCU resource load and latency in safety-critical paths.
Availability
VN7050AJTR is available at Aetrix Electronics and suitable for automotive lighting control, ADAS power distribution, and electric power steering auxiliary loads requiring stable component supply, AEC-Q100 compliance, and long-term automotive lifecycle support.
Supply support for VN7050AJTR 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 automotive qualification expertise.
VN7050AJTR belongs to ST's VIPower family of smart power ICs-engineered specifically for automotive high-side driving with integrated protection, diagnostics, and energy efficiency in harsh environments.
FAQ
What is the purpose of the FaultRST pin, and how does it affect fault recovery behavior?
The FaultRST pin is an active-low input that controls fault recovery mode. When pulsed low, it unlatches a latched-off output. If held continuously low, it configures the device for auto-restart operation-re-enabling the output after fault clearance without requiring a full power cycle. This dual-mode behavior supports both safety-critical latch-off (e.g., EPS) and transient-fault-tolerant (e.g., lighting) applications.
How does the MultiSense pin deliver three different diagnostic signals using a single output?
The MultiSense pin outputs analog signals selected by SEL0 and SEL1 logic levels: current sense (SEL0=L, SEL1=L), chip temperature (SEL0=L, SEL1=H), or VCC voltage (SEL0=H, SEL1=H). Each mode produces a distinct current or voltage-e.g., ISENSE = IOUT/K for current, or VSENSE = VCC/4 for supply monitoring-enabling full diagnostics with one pin and external resistor.
Can VN7050AJTR drive inductive loads like solenoids or motors, and what protection features apply?
Yes, VN7050AJTR is qualified for inductive loads. It includes integrated demagnetization clamping (VDEMAG = VCC − 41 V typical), fast thermal transient limiting, and short-to-ground detection. During turn-off, the output voltage is clamped to prevent destructive flyback spikes, and overload detection triggers power limitation before thermal shutdown-preserving reliability in door lock or HVAC actuator applications.
What external components are required for reverse battery protection, and why is GND pin treatment critical?
A series diode or resistor network must be placed between the PCB GND plane and the VN7050AJTR GND pin to block reverse current flow during jumper cable misconnection. This is critical because the internal protection circuitry assumes GND remains at lowest potential; without external blocking, reverse battery can damage the control stage and compromise all diagnostic functions-even if VCC is clamped.
VN7050AJTR 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):
- 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
VN7050AJTR FAQ
1.How can I place an order for VN7050AJTR through Aetrix?
Please submit a Request for Quotation (RFQ) for VN7050AJTR 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 VN7050AJTR reliable?
The price and inventory of VN7050AJTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for VN7050AJTR is usually 5 days.
3.What payment methods are accepted for VN7050AJTR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VN7050AJTR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VN7050AJTR?
VN7050AJTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VN7050AJTR 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 VN7050AJTR?
For technical support, including VN7050AJTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VN7050AJTR requirements.
6.How does Aetrix verify that VN7050AJTR is sourced from the original manufacturer or authorized distributors?
All VN7050AJTR 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 VN7050AJTR meets industry standards.
7.What is the process for return or replacement of VN7050AJTR?
All VN7050AJTR units undergo pre-shipment inspection (PSI). If there is an issue with VN7050AJTR, 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 VN7050AJTR part is unused and in its original packaging.
Return procedure for VN7050AJTR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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