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STMicroelectronics VN7050ASTR
- Part No.:
- VN7050ASTR
- Manufacturer:
- STMicroelectronics
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
VN7050ASTR.pdf
- Description:
- IC PWR DRIVER N-CHANNEL 1:1 8SO
- Quantity:
- Payment:
- Shipping:
Inventory:15,276
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Product details
Overview
VN7050ASTR 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. It interfaces directly with 3 V/5 V CMOS logic and delivers diagnostic functions including load current, chip temperature, and supply voltage sensing - deployed in turn indicators and ADAS sensor power supplies.
For engineers reviewing the VN7050ASTR datasheet, VN7050ASTR pinout, VN7050ASTR application, or VN7050ASTR equivalent, key selection criteria include its integrated fault reset (FaultRST), multiplexed analog sense output (MultiSense), latch-off configurability, thermal shutdown behavior at 150 °C, and compatibility with reverse battery protection circuits using external components.
Technical Context
This device uses ST's VIPower M0-7 technology to integrate gate driving, current limiting, thermal management, and analog diagnostics into a single high-side switch. Its control architecture supports both auto-restart and configurable latch-off modes via the active-low FaultRST pin, while SEL0/SEL1 select among current, VCC, and chip temperature sensing on the MultiSense pin.
The MultiSense function operates as a time-multiplexed proportional current mirror: ISENSE = IOUT / K, where K varies from 440 to 1290 depending on load current level (0.01–4.5 A), enabling high-precision closed-loop monitoring without external shunt resistors. Diagnostics include OFF-state open-load detection (2–4 V threshold), short-to-VCC indication, and dynamic thermal transient suppression.
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) conditions. |
| On-state resistance | 50 mΩ typ @ 2 A, 25 °C: Enables <100 mV drop at 2 A, minimizing power loss and self-heating in high-current loads. |
| Current limit | 30 A typ: Limits peak short-circuit current to protect wiring and upstream fuses during ground faults. |
| Standby current | 0.5 µA max @ 13 V, 25 °C: Allows module-level low-power sleep without compromising system wake-up responsiveness. |
| Thermal shutdown | 150 °C typ: Triggers latch-off or auto-restart based on FaultRST state, preventing silicon damage under sustained overload. |
| MultiSense accuracy | ±5% uncalibrated current sense up to 4.5 A: Enables reliable open-load and overcurrent detection without calibration hardware. |
| ESD rating | 4000 V HBM on INPUT/MultiSense/SEn/SEL/FaultRST: Ensures robustness against assembly and in-vehicle electrostatic events. |
Pinout & Package
Available in PowerSSO-16 and SO-8 packages; VN7050ASTR corresponds to the SO-8 variant per ST's official part numbering and packaging documentation (DS10826 Rev 5, p.3).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Battery supply input | Primary power rail connection; clamped to 46 V max during transients; requires external reverse-battery protection network. |
| OUTPUT | High-side switched output | Drives grounded automotive loads (e.g., lamps, solenoids); features internal clamp diode and fast demag capability (VCC − 41 V). |
| GND | Ground reference | Power and signal return; must be reverse-battery protected externally per datasheet recommendation. |
| INPUT | CMOS-compatible enable input | Hysteresis-enabled 3 V/5 V logic interface; controls channel ON/OFF state with 0.2 V hysteresis for noise immunity. |
| MultiSense | Multiplexed analog diagnostic output | Delivers proportional current (IOUT/K) or voltage (VCC/4, TCHIP) depending on SEL0/SEL1; requires external 1 kΩ–2.7 kΩ load resistor. |
| SEn | Sense enable control | Active-high 3 V/5 V input enabling MultiSense function; allows disabling diagnostics during low-power mode to reduce leakage. |
| SEL0, SEL1 | Multiplexer address inputs | Select diagnostic channel: current (L,L), VCC (H,H), or chip temperature (L,H); only functional in PowerSSO-16 and VN7050AJ variants. |
| FaultRST | Fault reset/latch control | Active-low input that unlatches output after fault; held low enables auto-restart mode instead of persistent latch-off. |
Key Features
| Feature | Design Value |
|---|---|
| MultiSense analog feedback | Single-pin multiplexed reporting of load current (±5% uncalibrated), VCC supply (VCC/4), and chip temperature (−5.5 mV/K) - eliminates need for separate ADC channels or external sensors. |
| Configurable fault response | FaultRST pin selects between auto-restart (low) or latch-off (high) behavior during overtemperature or power limitation - enables fail-safe or fail-operational system design. |
| OFF-state diagnostics | Detects open-load (2–4 V threshold), short-to-VCC, and negative inductive kickback without additional circuitry - critical for lamp-out detection in turn signals. |
| Reverse battery protection support | With external diode/resistor network on GND, withstands −14 V reverse polarity - meets ISO 16750-2 requirements for automotive environments. |
| Ultra-low standby consumption | 0.5 µA max supply current enables always-on modules (e.g., body controllers) to meet OEM quiescent current budgets (<100 µA total). |
Applications
| Automotive Turn Indicators | ADAS Sensor Power Supply |
|---|---|
|
Use Scenario: Driving P27W incandescent bulbs or SAE1156 LED rear combinations in vehicle lighting modules. IC Role / Device Role / Timing Role: High-side switch providing controlled 12 V power with real-time current monitoring and open-load detection for bulb-out alerts. Use Value: Eliminates discrete current-sense resistors and comparator circuits while meeting ECE R37 thermal cycling requirements for indicator flash rate stability. |
Use Scenario: Powering radar modules and camera sensors requiring clean, protected 12 V supply with fault visibility. IC Role / Device Role / Timing Role: Smart power switch delivering regulated output with overcurrent and thermal shutdown, plus analog feedback for system-level health monitoring. Use Value: Enables predictive maintenance by correlating chip temperature drift with radar performance degradation, reducing field failure root-cause analysis time. |
| Body Control Module Outputs | Electric Power Steering (EPS) Auxiliary Loads |
|
Use Scenario: Controlling door locks, seat heaters, or HVAC actuators in centralized body electronics units. IC Role / Device Role / Timing Role: High-side driver with latch-off protection and diagnostic reporting to MCU via MultiSense, supporting ASIL-B functional safety goals. Use Value: Reduces BOM count by integrating protection (undervoltage, overvoltage, ESD) and diagnostics previously implemented with discrete FETs and comparators. |
Use Scenario: Managing auxiliary solenoids or cooling fans in EPS systems subject to high vibration and thermal stress. IC Role / Device Role / Timing Role: Robust high-side switch with 30 A short-circuit capability and dynamic thermal transient suppression during rapid load switching. Use Value: Prevents false shutdowns during EPS motor commutation spikes by self-limiting fast thermal transients without sacrificing response time. |
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 BTS7008-1EPP | Higher RON (80 mΩ), no analog MultiSense; digital SPI diagnostics only. | Lacks analog VCC/temperature feedback; requires external ADC for full parameter visibility. | Choose when SPI-based diagnostics and lower cost outweigh need for analog current sensing precision. |
| NXP MC33883 | Lower current limit (14 A), standalone gate driver (no integrated MOSFET), requires external FET. | Needs external high-side FET and sense resistor; less compact for space-constrained modules. | Prefer when design requires custom MOSFET selection or higher voltage tolerance (>40 V transient). |
Compared with VN7050ASTR, BTS7008-1EPP trades analog diagnostic fidelity for digital communication simplicity, while MC33883 shifts integration burden to external components - making VN7050ASTR optimal for compact, analog-diagnostic–driven automotive modules needing minimal external parts.
Availability
VN7050ASTR is available at Aetrix Electronics and suitable for automotive lighting control, ADAS sensor power distribution, and body control module outputs requiring stable component supply, AEC-Q100 compliance, and long-term production continuity.
Supply support for VN7050ASTR 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 capabilities and broad automotive qualification coverage.
VN7050ASTR belongs to ST's VIPower family of intelligent power switches, designed specifically for automotive high-side load driving with integrated protection, diagnostics, and ultra-low quiescent current - targeting body electronics and ADAS subsystems.
FAQ
What package type does VN7050ASTR use?
VN7050ASTR is supplied in the SO-8 surface-mount package, as confirmed by STMicroelectronics' official datasheet DS10826 Rev 5 (page 3) and part number suffix "STR" denoting tape-and-reel SO-8. It shares electrical functionality with the PowerSSO-16 variant but differs in pin count and thermal resistance (Rthj-amb = 67.5 °C/W).
How does the MultiSense pin deliver multiple diagnostics?
The MultiSense pin outputs time-multiplexed analog signals selected by SEL0/SEL1: load current (IOUT/K), VCC/4, or chip temperature (−5.5 mV/K). In VN7050ASTR (SO-8), SEL0/SEL1 are N.C., so only current sense and fault states are available - unlike the PowerSSO-16 version which supports all three modes.
Can VN7050ASTR drive inductive loads like solenoids safely?
Yes - it integrates active demagnetization with VOUT clamping down to VCC − 41 V (typ) during inductive turn-off, limiting voltage spikes. Combined with 30 A current limiting and thermal shutdown, it safely handles solenoid back-EMF without external flyback diodes in most automotive cases.
Is reverse battery protection built-in?
No - reverse battery protection requires external components: a series diode or resistor network on the GND pin, as specified in the datasheet (page 4, Table 2). The device itself withstands −0.3 V on VCC and −14 V on GND only when properly protected externally per ISO 16750-2.
VN7050ASTR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 8-SOIC (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:
- 8-SOIC
VN7050ASTR FAQ
1.How can I place an order for VN7050ASTR through Aetrix?
Please submit a Request for Quotation (RFQ) for VN7050ASTR 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 VN7050ASTR reliable?
The price and inventory of VN7050ASTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for VN7050ASTR is usually 5 days.
3.What payment methods are accepted for VN7050ASTR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VN7050ASTR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VN7050ASTR?
VN7050ASTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VN7050ASTR 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 VN7050ASTR?
For technical support, including VN7050ASTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VN7050ASTR requirements.
6.How does Aetrix verify that VN7050ASTR is sourced from the original manufacturer or authorized distributors?
All VN7050ASTR 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 VN7050ASTR meets industry standards.
7.What is the process for return or replacement of VN7050ASTR?
All VN7050ASTR units undergo pre-shipment inspection (PSI). If there is an issue with VN7050ASTR, 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 VN7050ASTR part is unused and in its original packaging.
Return procedure for VN7050ASTR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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