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STMicroelectronics VN9012AJTR
- Part No.:
- VN9012AJTR
- Manufacturer:
- STMicroelectronics
- Package:
- 16-PowerLFSOP (0.154", 3.90mm Width)
- Datasheet:
-
VN9012AJTR.pdf
- Description:
- AUTOMOTIVE ANALOG AND POWER
- Quantity:
- Payment:
- Shipping:
Inventory:2,495
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Product details
Overview
VN9012AJTR from STMicroelectronics is a single-channel automotive smart high-side driver in PowerSSO-16 package, designed for 12 V grounded loads with 3 V/5 V CMOS-compatible control. It delivers 12 mΩ on-state resistance, 63 A typical current limit, <0.5 µA standby current, and integrated analog current-sense feedback. Used in ADAS radar/sensor power distribution with deep cold-cranking support per LV124 Rev 2013.
For engineers reviewing the VN9012AJTR datasheet, VN9012AJTR pinout, VN9012AJTR application, or VN9012AJTR equivalent, key selection criteria include AEC-Q100 qualification, multiplexed diagnostic CS pin functionality, configurable latch-off vs auto-restart fault behavior via FaultRST, and reverse-battery protection capability through self-turn-on.
Technical Context
The device implements VIPower M0-9 technology to integrate power MOSFET, gate driver, protection logic, and analog current-sense mirror in one die. Its thermal protection uses spatial temperature gradient sensing (ΔTJ_SD = 80 K at VCC = 16 V) rather than absolute junction temperature measurement, enabling fast response to transient overloads.
Diagnostic functions are time-multiplexed on the CS pin: proportional load current (K = 10400 ±7% at IOUT = 4.75 A), chip temperature sense, supply voltage feedback, open-load detection (VOL = 2–4 V threshold), short-to-VCC, and short-to-ground indication-all enabled/disabled via SEn pin.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Operating Voltage | 4–28 V DC - supports deep cold cranking down to 4 V while maintaining full functionality. |
| On-State Resistance | 12 mΩ typ. at 25 °C - enables low conduction loss for high-current loads up to 63 A. |
| Current Limit | 63 A typ. at VCC = 16 V, TJ = −40 °C - provides robust short-circuit protection with ±15% tolerance. |
| Standby Current | 0.5 µA max. at 13 V, 25 °C - minimizes battery drain in vehicle sleep modes. |
| Thermal Shutdown | 150–210 °C shutdown range with 7 °C hysteresis - ensures safe operation under sustained overload. |
| Diagnostic Accuracy | ±7% current sense ratio (K) at 4.75 A - enables precise real-time load monitoring for functional safety compliance. |
| ESD Rating | 4000 V HBM on OUTPUT0 - withstands harsh automotive ESD environments without external clamping. |
Pinout & Package
Package: PowerSSO-16 (exposed thermal pad connected to VCC). Surface-mount, thermally enhanced, AEC-Q100 qualified package with 0.5 mm pitch and 10.3 × 6.5 mm footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Battery supply input | Primary power rail; connects to exposed thermal pad; supports reverse-battery protection via internal diode path. |
| OUTPUT0 | High-side power output | Drives grounded loads; integrates clamp diode (VF = 0.7 V at −4.75 A, 150 °C) for inductive kickback. |
| GND | Ground reference | Must be externally reverse-battery protected; serves as return path for control logic and sense circuitry. |
| INPUT0 | CMOS-compatible enable input | Hysteresis-enabled (0.2 V), compatible with 3 V/5 V logic; controls channel ON/OFF state directly. |
| CS | Multiplexed analog sense output | Delivers proportional current (IOUT/K) or fault voltage levels; requires external resistor (e.g., 0.7 kΩ) for open-load detection. |
| SEn | Sense enable control | Active-high CMOS input; enables CS diagnostics; floating not allowed - must be pulled to GND or VCC via 15 kΩ. |
| FaultRST | Fault reset/latch control | Active-low input; sets auto-restart (low) or latch-off (high) behavior after thermal or overload fault. |
Key Features
| Feature | Design Value |
|---|---|
| Deep cold-cranking operation | Functional down to 4 V VCC - meets LV124 Rev 2013 requirements for engine start scenarios. |
| Configurable fault recovery | FaultRST pin selects between auto-restart (transient faults) or latch-off (persistent faults) - simplifies system-level fault handling. |
| Multiplexed analog diagnostics | Single CS pin reports load current, chip temperature, supply voltage, and four fault types - reduces BOM and PCB routing complexity. |
| Reverse-battery protection | Self-turn-on mechanism prevents damage during reverse connection - eliminates need for external series diode. |
| Ultra-low standby consumption | 0.5 µA max. quiescent current - extends vehicle battery life in parked/standby states. |
Applications
| Radar Module Power Supply | ADAS Camera Sensor Protection |
|---|---|
Use Scenario: Powers 77 GHz radar transceivers requiring stable 12 V supply with fast fault response during EMI-rich RF switching. IC Role / Device Role / Timing Role: High-side switch with current-sense feedback and thermal foldback - ensures radar remains powered unless catastrophic overload occurs. Use Value: Prevents system-wide shutdown during transient radar current spikes by limiting peak power instead of latching off immediately. | Use Scenario: Supplies image sensor and ISP in forward-facing camera systems exposed to wide ambient temperature swings (−40 °C to +105 °C). IC Role / Device Role / Timing Role: Protected power rail with OFF-state open-load detection - verifies sensor cable integrity before boot. Use Value: Detects broken sensor harnesses during startup using external pull-up and VOL threshold (2–4 V), eliminating false diagnostics. |
| Electric Power Steering (EPS) Auxiliary Load | Body Control Module (BCM) Lighting Driver |
Use Scenario: Drives EPS cooling fan or auxiliary solenoid where intermittent mechanical jams cause repeated short-circuits. IC Role / Device Role / Timing Role: Smart high-side driver with ΔTJ-based power limitation - cycles output during jam without thermal runaway. Use Value: Enables safe auto-restart mode (FaultRST = low) to restore function after mechanical obstruction clears. | Use Scenario: Controls LED headlamp modules with PWM dimming and open-circuit detection for DRL and turn signals. IC Role / Device Role / Timing Role: Current-regulated high-side driver with analog sense feedback - provides real-time LED current monitoring for closed-loop brightness control. Use Value: Delivers ±7% current sense accuracy across 0.25–14 A range, supporting ASIL-B functional safety requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-side driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| INFINEON BTS7008-1EPP | Higher RON (18 mΩ), no multiplexed CS pin - separate pins for current sense and fault flags. | Lacks integrated open-load and short-to-VCC diagnostics; requires external comparators for full fault coverage. | Choose when board space allows discrete sense components and lower cost outweighs diagnostic integration. |
| NXP MC33883A | Lower current limit (45 A), no reverse-battery self-protection - requires external series diode. | Supports SPI interface but lacks analog CS multiplexing; limited cold-cranking down to 5.5 V only. | Prefer for SPI-controlled systems needing programmable slew rate and watchdog timeout, not extreme low-voltage operation. |
Compared with VN9012AJTR, BTS7008-1EPP trades diagnostic integration for cost and BTS7008-1EPP trades diagnostic integration for cost and MC33883A sacrifices cold-cranking margin and reverse-battery robustness for digital configurability - making VN9012AJTR optimal for AEC-Q100-compliant, space-constrained, low-voltage automotive power nodes.
Availability
VN9012AJTR is available at Aetrix Electronics and suitable for automotive radar modules, ADAS camera sensors, electric power steering auxiliary loads, and body control module lighting drivers requiring stable component supply across extended temperature and voltage ranges.
Supply support for VN9012AJTR 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, industrial, and power management ICs with strong AEC-Q100 design heritage.
VN9012AJTR belongs to ST's VIPower family of intelligent power switches, engineered specifically for automotive high-side load driving with integrated protection, diagnostics, and ultra-low quiescent current.
FAQ
What is the purpose of the FaultRST pin?
The FaultRST pin configures fault recovery behavior: held low enables auto-restart mode for transient overloads, while held high forces latch-off until manually reset. It also serves as an active-low fault indicator - pulled low internally during thermal or current-limit events. This dual function eliminates need for external fault status decoding logic.
How does the CS pin deliver multiple diagnostic functions?
The CS pin outputs time-multiplexed signals: load current (IOUT/K), chip temperature, supply voltage, and fault states (open-load, short-to-GND/VCC). Selection is controlled by SEn and INPUT0 timing - e.g., open-load detection requires SEn high and INPUT0 low, while current sense requires both high. External RC filtering and ADC sampling synchronize with these windows.
Can VN9012AJTR operate below 4 V?
No - the device shuts down below VUSD = 2.1–2.7 V and will not resume until VCC exceeds VUSDReset = 4.5 V. Operation below 4 V is outside specification; however, it maintains full functionality down to exactly 4 V, satisfying LV124 Rev 2013 deep cold-cranking requirements for 12 V systems.
Is external reverse-battery protection required on GND?
Yes - the datasheet explicitly states GND "must be reverse battery protected by an external diode/resistor network." While the device has reverse-battery protection on VCC via self-turn-on, GND lacks internal protection and remains vulnerable to reverse current injection during battery misconnection.
VN9012AJTR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 16-PowerLFSOP (0.154", 3.90mm Width)
- Series:
- -
- 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:
- Logic
- Voltage - Load:
- -
- Voltage - Supply (Vcc/Vdd):
- 4V ~ 28V
- Current - Output (Max):
- 63A
- Rds On (Typ):
- 12mOhm
- Input Type:
- Non-Inverting
- Features:
- Latch Function, Status Flag
- Fault Protection:
- Current Limiting (Adjustable), Open Load Detect, Over Load, Over Temperature, Over Voltage, Reverse Battery, Short Circuit, UVLO
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PowerSSO-16
VN9012AJTR FAQ
1.How can I place an order for VN9012AJTR through Aetrix?
Please submit a Request for Quotation (RFQ) for VN9012AJTR 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 VN9012AJTR reliable?
The price and inventory of VN9012AJTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for VN9012AJTR is usually 5 days.
3.What payment methods are accepted for VN9012AJTR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VN9012AJTR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VN9012AJTR?
VN9012AJTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VN9012AJTR 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 VN9012AJTR?
For technical support, including VN9012AJTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VN9012AJTR requirements.
6.How does Aetrix verify that VN9012AJTR is sourced from the original manufacturer or authorized distributors?
All VN9012AJTR 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 VN9012AJTR meets industry standards.
7.What is the process for return or replacement of VN9012AJTR?
All VN9012AJTR units undergo pre-shipment inspection (PSI). If there is an issue with VN9012AJTR, 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 VN9012AJTR part is unused and in its original packaging.
Return procedure for VN9012AJTR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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