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STMicroelectronics VN7040ASTR
- Part No.:
- VN7040ASTR
- Manufacturer:
- STMicroelectronics
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
VN7040ASTR.pdf
- Description:
- IC PWR DRIVER N-CHANNEL 1:1 8SO
- Quantity:
- Payment:
- Shipping:
Inventory:4,891
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Product details
Overview
VN7040ASTR from STMicroelectronics is a single-channel automotive smart high-side driver with integrated MultiSense analog feedback, designed for 12 V grounded loads in AEC-Q100 qualified systems. It features 40 mΩ typical on-state resistance, 34 A current limitation, <0.5 µA standby current, and operates across 4–28 V supply range-enabling robust control of turn indicators (P27W/SAE1156/R5W/LED rear combinations) and protected ADAS sensor supplies.
For engineers reviewing the VN7040ASTR datasheet, VN7040ASTR pinout, VN7040ASTR application, or VN7040ASTR equivalent, key selection criteria include its multiplexed analog sense capability (load current, VCC, chip temperature), configurable latch-off fault recovery via FaultRST, and compatibility with 3 V/5 V CMOS logic interfaces in harsh automotive environments.
Technical Context
This device implements VIPower M0-7 technology to integrate power switching, protection logic, and diagnostic multiplexing in one die. Its core architecture includes a self-limiting thermal transient response, undervoltage/overvoltage clamping, and active power limitation during overload-enabling safe operation without external current-sense resistors or discrete protection components.
The MultiSense subsystem uses a single analog output pin (MultiSense) with three addressable channels (via SEL0/SEL1) to deliver proportional current mirror output (K-factor calibrated from 530 to 2650 A/A), chip temperature voltage (−5.5 mV/K), and VCC/4 voltage feedback-all enabled by SEn and synchronized to input transitions with sub-100 µs settling times.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 4–28 V DC operating supply; supports cold-crank (4 V) and load-dump (40 V transient) per ISO 16750-2. |
| RON | 40 mΩ typ. at 2.5 A/25°C; ensures <100 mV drop at 2.5 A, minimizing power loss and thermal rise. |
| ILIMH | 34 A typ. short-circuit current limit; provides deterministic overload handling without external fusing. |
| ISTBY | 0.5 µA max. standby current; enables always-on modules with negligible battery drain over weeks. |
| TTSD | 150–200°C thermal shutdown threshold; combined with 7 K hysteresis (TR) for stable cycling under sustained overload. |
| MultiSense Accuracy | ±5% uncalibrated current sense error up to 4.5 A; ±0.5% after single-point calibration at 30 mA. |
| Switching Energy | 0.32–0.4 mJ turn-on / 0.33–0.4 mJ turn-off (RL = 5.2 Ω); limits MOSFET self-heating during PWM dimming. |
Pinout & Package
Available in SO-8 and PowerSSO-16 packages; VN7040ASTR uses the PowerSSO-16 package with exposed thermal pad (TAB = VCC). Pin functions are validated per DS10829 Rev 5 Figure 2 and Table 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Battery supply input | Primary power rail; connects to 12 V battery; internal clamp limits transients to 40 V. |
| OUTPUT | High-side switched output | Drives grounded loads; integrates reverse-battery diode protection (VF = 0.7 V @ −2.5 A). |
| GND | Ground reference | Must be reverse-battery protected externally; serves as return path for all internal logic and sense circuits. |
| INPUT | CMOS-compatible control input | Hysteresis-enabled (0.2 V), accepts 3 V/5 V logic; controls OUTPUT state directly. |
| MultiSense | Multiplexed analog diagnostic output | Delivers IOUT/K, VCC/4, or TCHIP voltage depending on SEL0/SEL1; requires external 1 kΩ pull-up. |
| SEn | Sense enable control | Active-high; disables MultiSense during low-power mode and enables shared external sense resistor use. |
| SEL0, SEL1 | Multiplexer address inputs | Select diagnostic channel: 00 = current, 01 = chip temp (VN7040AJ only), 11 = VCC; both high for latch-off mode. |
| FaultRST | Fault reset / auto-restart control | Active-low; unlatches output after thermal/power fault; held low for auto-restart behavior. |
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) with <100 µs channel settling. |
| Configurable fault recovery | FaultRST pin selects between latch-off (default) and auto-restart modes-critical for safety-critical lighting vs. infotainment loads. |
| OFF-state diagnostics | Detects open-load (2–4 V threshold), short-to-VCC, and negative inductive kick via dedicated sensing paths-no external components required. |
| AEC-Q100 Grade 1 qualification | Rated for −40°C to +150°C junction temperature; validated for automotive engine bay and headlamp module placement. |
| Integrated protection suite | Combines undervoltage lockout (4 V), overvoltage clamp (41–52 V), current limiting (34 A), and dynamic thermal management without external circuitry. |
Applications
| Automotive Turn Indicators | ADAS Sensor Power Supply |
|---|---|
|
Use Scenario: Driving P27W incandescent bulbs or SAE1156/R5W parallel LED arrays in rear combination lamps. IC Role / Device Role / Timing Role: High-side switch with precise current mirroring for real-time filament/LED health monitoring and open-circuit detection. Use Value: Eliminates need for separate current-sense shunts and comparators; enables predictive failure alerts via MultiSense current readback. |
Use Scenario: Providing protected 12 V supply to radar modules and camera sensors requiring fault-tolerant power routing. IC Role / Device Role / Timing Role: Smart power switch with VCC/4 feedback and thermal shutdown-ensuring clean power delivery during ECU wake/sleep cycles. Use Value: Prevents system-level resets due to undervoltage or thermal faults; allows host MCU to log root cause via MultiSense voltage/temperature data. |
| Body Control Module Outputs | Engine Bay Auxiliary Loads |
|
Use Scenario: Controlling HVAC actuators, door locks, and interior lighting in centralized body controllers. IC Role / Device Role / Timing Role: Single-channel high-side driver with latch-off fault handling and low quiescent current for always-on domains. Use Value: Reduces BOM count by integrating protection, diagnostics, and logic-level interface-cutting PCB area and validation effort. |
Use Scenario: Switching fuel pump relays, cooling fans, or turbocharger actuators exposed to high ambient temperatures. IC Role / Device Role / Timing Role: Thermally robust high-side switch with 150°C shutdown and dynamic thermal transient limiting for under-hood placement. Use Value: Withstands 125°C ambient with 23.5°C/W Rthj-amb (PowerSSO-16), enabling direct mounting on metal chassis without heatsinks. |
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 BTS7004-1EPP | Higher RON (60 mΩ), no analog VCC/temp feedback, only current sense; lacks SEL0/SEL1 multiplexing. | Supports basic current monitoring but cannot replace MultiSense diagnostics in ADAS or predictive maintenance systems. | Choose when cost-sensitive designs require only overload protection and simple current feedback-no VCC/temp telemetry needed. |
| NXP MC33883 | Lower current limit (15 A), no integrated VCC clamp, requires external sense resistor; offers SPI interface instead of analog multiplexing. | Suited for lower-power body electronics but unsuitable for P27W turn signals or radar supplies demanding >30 A peak capability. | Prefer for SPI-based BMS or gateway modules where digital diagnostics and daisy-chaining outweigh analog simplicity. |
Compared with VN7040ASTR, BTS7004-1EPP trades diagnostic richness for lower unit cost, while MC33883 shifts complexity to software-driven digital communication-making VN7040ASTR optimal for analog-centric, high-current automotive safety and lighting systems requiring minimal external components.
Availability
VN7040ASTR is available at Aetrix Electronics and suitable for automotive lighting control, ADAS power distribution, and body control module design requiring stable component supply, AEC-Q100 compliance, and long-term production continuity.
Supply support for VN7040ASTR 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 and AEC-Q100 process validation.
VN7040ASTR belongs to ST's VIPower family of intelligent power switches, engineered specifically for automotive high-side load control with integrated diagnostics, protection, and low-quiescent-power operation in harsh environments.
FAQ
What is the maximum transient voltage rating for VN7040ASTR?
VN7040ASTR supports up to 40 V transient supply voltage per ISO 16750-2 Test B (clamped), verified in DS10829 Rev 5 Table 3. This rating applies to single-pulse events with RL = 4 Ω and ensures survival during load-dump conditions without external TVS diodes.
How does the MultiSense pin distinguish between current, VCC, and temperature readings?
MultiSense output is selected by SEL0 and SEL1 logic levels: 00 = load current (IOUT/K), 01 = chip temperature (−5.5 mV/K), 11 = VCC/4. SEn must be high to enable any channel. Each mode has distinct settling times (60–250 µs) and voltage ranges (e.g., 1.435–2.495 V for temperature).
Can VN7040ASTR drive inductive loads like fuel pumps without external flyback protection?
Yes-VN7040ASTR integrates active demagnetization clamping (VDEMAG = VCC − 41 V typical) and fast thermal transient limiting. For a 6 mH inductive load at 2 A, it suppresses negative voltage spikes to safe levels without external diodes, per DS10829 Table 8.
Is the FaultRST pin required for normal operation?
No-FaultRST is optional. When left floating or pulled high, the device defaults to latch-off fault behavior. Pulling it low enables auto-restart mode after thermal or overload faults. Its 3–20 µs unlatch timing (Table 8) ensures rapid recovery in non-safety-critical applications.
VN7040ASTR 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):
- 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:
- 8-SOIC
VN7040ASTR FAQ
1.How can I place an order for VN7040ASTR through Aetrix?
Please submit a Request for Quotation (RFQ) for VN7040ASTR 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 VN7040ASTR reliable?
The price and inventory of VN7040ASTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for VN7040ASTR is usually 5 days.
3.What payment methods are accepted for VN7040ASTR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VN7040ASTR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VN7040ASTR?
VN7040ASTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VN7040ASTR 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 VN7040ASTR?
For technical support, including VN7040ASTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VN7040ASTR requirements.
6.How does Aetrix verify that VN7040ASTR is sourced from the original manufacturer or authorized distributors?
All VN7040ASTR 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 VN7040ASTR meets industry standards.
7.What is the process for return or replacement of VN7040ASTR?
All VN7040ASTR units undergo pre-shipment inspection (PSI). If there is an issue with VN7040ASTR, 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 VN7040ASTR part is unused and in its original packaging.
Return procedure for VN7040ASTR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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