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STMicroelectronics VN7140ASTR
- Part No.:
- VN7140ASTR
- Manufacturer:
- STMicroelectronics
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
VN7140ASTR.pdf
- Description:
- IC PWR DRIVER N-CHANNEL 1:1 8SO
- Quantity:
- Payment:
- Shipping:
Inventory:43,056
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Product details
Overview
VN7140ASTR from STMicroelectronics is a single-channel AEC-Q100 qualified smart high-side driver for 12 V automotive grounded loads, featuring MultiSense analog feedback, 140 mΩ typical on-state resistance, 12 A current limitation, and operation across 4–28 V supply range. It interfaces directly with 3 V/5 V CMOS logic and delivers real-time diagnostics for load current, chip temperature, and supply voltage in automotive signal lamp and ADAS sensor power applications.
For engineers reviewing the VN7140ASTR datasheet, VN7140ASTR pinout, VN7140ASTR application, or VN7140ASTR equivalent, this page provides verified technical context, validated pin functions, confirmed diagnostic multiplexing behavior, and application-specific design meaning for automotive high-side switching and fault-aware power control.
Technical Context
The VN7140ASTR integrates VIPower M0-7 technology to combine high-side power switching with multi-function analog sensing via a single MultiSense pin. Its internal architecture includes a precision proportional current mirror (K-factor calibrated from 0.01 A to 2 A), configurable thermal shutdown with latch-off/reset via FaultRST, and dynamic overload management through power limitation rather than hard current cutoff.
It supports three diagnostic modes-load current, VCC supply voltage, and chip temperature-selected by SEL0/SEL1 under SEn enable control. The device implements undervoltage lockout (4 V threshold), overvoltage clamping (41–52 V), reverse battery protection (with external components), and OFF-state open-load detection using a 2–4 V VOL threshold with 100–700 µs delay timing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Operating Voltage | 4–28 V DC: Enables direct connection to automotive battery rail with cold-crank tolerance down to 4 V. |
| On-State Resistance | 140 mΩ typ. @ 1 A, 25°C: Limits conduction loss to ≤140 mW at 1 A, supporting thermally constrained PCB layouts. |
| Current Limitation | 12 A typ. DC short-circuit limit: Provides robust overload handling without external fusing for resistive/inductive lamp loads. |
| Standby Current | 0.5 µA max. @ 13 V, 25°C: Enables always-on modules (e.g., body control units) with negligible battery drain. |
| MultiSense Accuracy | ±5% uncalibrated current sense (0.01–2 A): Delivers sufficient fidelity for open-load, overload, and thermal trend monitoring without calibration hardware. |
| Thermal Shutdown | 150–200°C junction shutdown with 7 K hysteresis: Prevents destructive thermal runaway while allowing safe recovery after transient overloads. |
| Fault Reset Pin | FaultRST active-low: Enables either auto-restart (pulled low) or latched fault state (pulled high) per system safety requirements. |
Pinout & Package
Available in PowerSSO-16 (exposed thermal pad = VCC) and SO-8 packages. VN7140ASTR uses the PowerSSO-16 variant per ST's official ordering information and package marking convention for A-grade automotive parts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Battery supply input | Primary power rail connection; exposed thermal pad tied to VCC for enhanced heat dissipation in PowerSSO-16. |
| OUTPUT | High-side switched output | Drives grounded automotive loads (lamps, solenoids); features integrated clamp diode and reverse-battery protection support. |
| GND | Ground reference | Must be externally reverse-battery protected via diode/resistor network per datasheet requirement. |
| INPUT | CMOS-compatible control input | Hysteresis-enabled 3 V/5 V logic interface; controls OUTPUT state with no external pull-up needed. |
| MultiSense | Multiplexed analog diagnostic output | Delivers proportional current (IOUT/K), VCC/4, or chip temperature (−5.5 mV/K) based on SEL0/SEL1 address under SEn enable. |
| SEn | Sense enable control | Active-high CMOS input enabling MultiSense function; allows OFF-state diagnosis disable during low-power mode. |
| SEL0, SEL1 | Multiplexer address inputs | Select diagnostic channel: current (LL), chip temp (LH), VCC (HH); LH/HH only functional in PowerSSO-16 variant. |
| FaultRST | Fault reset/latch control | Active-low input that unlatches output after thermal/power fault or configures auto-restart when held low. |
Key Features
| Feature | Design Value |
|---|---|
| MultiSense Analog Feedback | Single-pin multiplexed reporting of load current (0.01–2 A), VCC/4, and chip temperature (−5.5 mV/K), reducing BOM count and PCB routing complexity. |
| Configurable Fault Latching | FaultRST pin enables system-level choice between auto-restart (transient overload recovery) or latched-off (fail-safe shutdown) behavior. |
| OFF-State Open-Load Detection | Validated 2–4 V VOL threshold with 5–30 µs response time enables reliable bulb-out detection in rear lamp modules without added comparators. |
| Reverse Battery Protection Support | Internal circuitry tolerates −0.3 V on VCC when combined with external diode/resistor network, meeting ISO 16750-2 reverse polarity test requirements. |
| AEC-Q100 Grade 1 Qualification | Rated for −40°C to +125°C ambient operation with 150°C junction limit, ensuring reliability in engine bay and exterior lighting environments. |
Applications
| Automotive Signal Lamps | ADAS Sensor Power Supply |
|---|---|
Use Scenario: Driving R10W filament bulbs and LED rear combinations in tail/brake lamp modules. IC Role / Device Role / Timing Role: High-side switch with integrated diagnostics replaces discrete MOSFET + sense resistor + comparator solution. Use Value: Eliminates need for external current-sense amplifiers and thermal sensors while providing real-time open-load and short-to-VCC detection. |
Use Scenario: Providing protected, monitored 12 V supply to radar modules and camera ECUs in ADAS domain controllers. IC Role / Device Role / Timing Role: Smart power switch with VCC and TCHIP feedback enables supply health monitoring and thermal derating coordination. Use Value: Enables predictive thermal management and supply brownout alerts before sensor malfunction occurs, improving ASIL-B system robustness. |
| Body Control Module Outputs | Electric Power Steering Auxiliary Loads |
Use Scenario: Controlling interior lighting, HVAC actuators, and door lock solenoids in centralized BCMs. IC Role / Device Role / Timing Role: Low-quiescent-current (0.5 µA) high-side driver enabling always-on functionality without battery depletion. Use Value: Reduces standby current by >95% versus legacy mechanical relays, extending key-off battery life in modern vehicle architectures. |
Use Scenario: Switching auxiliary pumps, heaters, or cooling fans in EPS sub-systems requiring fault logging and thermal awareness. IC Role / Device Role / Timing Role: Power limiter with configurable latch-off prevents cascading failure during motor stall or wiring faults. Use Value: Supports ISO 26262 diagnostic coverage by providing traceable fault events (overtemp, short-to-ground, open-load) via MultiSense pin. |
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 |
|---|---|---|---|
| VN7050AJTR | Lower current limit (5 A), no VCC/temperature sensing, SO-8 only | Suitable for smaller loads (e.g., indicator LEDs) but lacks MultiSense diagnostics for thermal or supply monitoring | Select when cost and footprint are prioritized over diagnostic depth and higher current capability |
| TPS4H160BQPWPRQ1 | TI device with 160 V abs max rating, 100 mΩ RON, SPI interface instead of analog MultiSense | Requires microcontroller firmware for diagnostics; better for high-voltage truck/marine systems, not optimized for lamp load profiles | Select when digital bus integration and extended voltage range outweigh analog simplicity and automotive lamp-specific tuning |
Compared with VN7140ASTR, VN7050AJTR offers lower cost and smaller size but sacrifices diagnostic richness and current capacity, while TPS4H160BQPWPRQ1 provides higher voltage resilience and digital configurability at the expense of analog diagnostic immediacy and lamp-optimized protection thresholds.
Availability
VN7140ASTR is available at Aetrix Electronics and suitable for automotive signal lamps, ADAS sensor power supplies, and body control module outputs requiring stable component supply, AEC-Q100 compliance, and long-term production continuity.
Supply support for VN7140ASTR 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.
VN7140ASTR belongs to ST's VIPower family of intelligent power switches, designed specifically for automotive high-side load driving with integrated protection and analog diagnostics to replace relay-based and discrete MOSFET solutions.
FAQ
What is the purpose of the FaultRST pin?
The FaultRST pin is an active-low input that controls fault recovery behavior: when pulled low, it enables auto-restart mode after thermal or overload faults; when pulled high, it latches the output off until manually reset. This dual-mode operation supports both fail-operational and fail-safe system architectures per ISO 26262 requirements.
How does MultiSense distinguish between current, VCC, and temperature sensing?
MultiSense output mode is selected by the logic states of SEL0 and SEL1 under SEn = high: SEL0=LOW/SEL1=LOW selects load current (IOUT/K), SEL0=LOW/SEL1=HIGH selects chip temperature (−5.5 mV/K), and SEL0=HIGH/SEL1=HIGH selects VCC/4. Each mode delivers a distinct analog voltage or current output with defined settling times (60–250 µs).
Can VN7140ASTR drive inductive loads like fuel injectors or solenoids?
Yes - VN7140ASTR includes integrated clamp diodes and dynamic energy handling (10 mJ max switching energy), enabling safe turn-off of inductive loads up to 6 mH. Its demagnetization voltage clamp (VCC − 41 V) and fast thermal transient limiting prevent destructive voltage spikes during coil de-energization.
Is external reverse battery protection required?
Yes - the GND pin must be protected against reverse battery conditions using an external diode/resistor network as specified in ST's application guidance. While the device tolerates −0.3 V on VCC, the GND path lacks internal reverse polarity protection and requires external implementation to meet ISO 16750-2 test requirements.
VN7140ASTR 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):
- 8A
- Rds On (Typ):
- 140mOhm
- 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
VN7140ASTR FAQ
1.How can I place an order for VN7140ASTR through Aetrix?
Please submit a Request for Quotation (RFQ) for VN7140ASTR 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 VN7140ASTR reliable?
The price and inventory of VN7140ASTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for VN7140ASTR is usually 5 days.
3.What payment methods are accepted for VN7140ASTR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VN7140ASTR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VN7140ASTR?
VN7140ASTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VN7140ASTR 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 VN7140ASTR?
For technical support, including VN7140ASTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VN7140ASTR requirements.
6.How does Aetrix verify that VN7140ASTR is sourced from the original manufacturer or authorized distributors?
All VN7140ASTR 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 VN7140ASTR meets industry standards.
7.What is the process for return or replacement of VN7140ASTR?
All VN7140ASTR units undergo pre-shipment inspection (PSI). If there is an issue with VN7140ASTR, 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 VN7140ASTR part is unused and in its original packaging.
Return procedure for VN7140ASTR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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