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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Power Distribution Switches, Load Drivers

STMicroelectronics VN7140AJTR

Name: VN7140AJTR
Brand: STMicroelectronics
SKU: VN7140AJTR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: VN7140AJTR

Manufacturer:: STMicroelectronics

Category:: Power Distribution Switches, Load Drivers

Package:: 16-PowerLFSOP (0.154", 3.90mm Width)

Datasheet:: VN7140AJTR.pdf

Description:: IC PWR DRVR N-CHAN 1:1 PWRSSO16

Quantity:: RFQ Add To RFQ list

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Product details

Overview

VN7140AJTR 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 lamps and ADAS sensor power supplies.

For engineers reviewing the VN7140AJTR datasheet, VN7140AJTR pinout, VN7140AJTR application, or VN7140AJTR equivalent, this device supports precise fault detection (short-to-VCC, open-load in OFF-state, thermal shutdown), configurable latch-off/reset behavior, and multiplexed analog sensing-critical for functional safety-compliant lighting and radar power management designs.

Technical Context

The VN7140AJTR integrates VIPower M0-7 technology to combine high-side switching with multi-function analog diagnostics. Its internal architecture includes a precision proportional current mirror for load current sensing, dedicated thermal shutdown circuitry with 150–200 °C trip range, and a configurable FaultRST pin enabling either auto-restart or latched fault mode.

MultiSense functionality uses SEL0/SEL1 address lines to select between three diagnostic modes-load current (K-factor calibrated from 0.01 A to 2 A), chip temperature (−40 to +125 °C, −5.5 mV/K slope), and VCC supply voltage (VSENSE = VCC/4)-all delivered via a single analog output pin with <60 µs settling time per mode transition.

Key Specifications

Parameter	Value and Actual Design Meaning
Operating Voltage Range	4–28 V DC: Supports full automotive battery range including cold-crank (4 V) and load-dump transients (up to 40 V clamped).
On-State Resistance	140 mΩ typ @ 1 A, 25°C: Enables low conduction loss for 12 A peak loads with <1.7 W dissipation at rated current.
Current Limitation	12 A typ DC short-circuit limit: Self-limiting protection prevents destructive overcurrent during lamp inrush or wiring faults.
Standby Current	0.5 µA max @ 13 V, 25°C: Meets ultra-low-power requirements for always-on vehicle modules and ECU sleep modes.
Diagnostic Accuracy	±5% uncalibrated current sense @ 2 A; ±0.1 V temp-sense linearity: Enables robust open-load and thermal monitoring without external calibration.
Fault Response Time	3–20 µs fault reset latency (FaultRST active-low): Allows deterministic recovery timing for ASIL-B–aligned system-level fault handling.
Thermal Shutdown	150 °C trip, 135 °C reset (7 K hysteresis): Prevents cumulative thermal damage while avoiding nuisance shutdowns during transient overload.

Pinout & Package

Package: PowerSSO-16 (exposed tab connected to VCC). Compatible with high-power automotive PCB layouts requiring low thermal resistance (R_thj-board = 7.9 °C/W).

Pin/Terminal	Circuit Role	Design Meaning
VCC	Battery supply input	Primary power rail; exposed tab connection enables direct heatsinking and reverse-battery protection via external diode/resistor network.
OUTPUT	High-side switched output	Drives grounded loads (e.g., LED lamps, solenoids); features integrated clamp diode for inductive kickback suppression.
GND	Ground reference	Signal and power return; must be reverse-battery protected externally per datasheet guidance.
INPUT	CMOS-compatible control input	Hysteresis-enabled 3 V/5 V logic interface; controls channel ON/OFF state with no external pull-up required.
MultiSense	Multiplexed analog diagnostic output	Delivers current-proportional I_SENSE, V_CC/4, or T_CHIP-proportional voltage based on SEL0/SEL1; requires external 1 kΩ–2.7 kΩ sense resistor.
SEn	Sense enable control	Active-high pin disabling OFF-state diagnostics during low-power mode; enables sharing of sense resistor across multiple channels.
SEL0, SEL1	Multiplexer address inputs	Select MultiSense mode: current (LL), chip temperature (LH), or V_CC (HH); compatible with 3 V/5 V CMOS outputs.
FaultRST	Fault reset/latch control	Active-low pin unlatching output after thermal/overload fault; held low for auto-restart, pulsed for one-shot reset.

Key Features

Feature	Design Value
MultiSense Analog Feedback	Single-pin multiplexed reporting of load current (0.01–2 A), chip temperature (−40 to +125 °C), and V_CC (4–28 V) with <60 µs mode-switching delay.
Configurable Fault Latch	FaultRST pin selects between auto-restart (continuous cycling under overload) or latched-off (requires manual reset) behavior-critical for fail-safe lighting control.
OFF-State Open-Load Detection	Detects open-circuit condition with 2–4 V threshold and <700 µs response; eliminates need for external pull-up resistors in lamp monitoring circuits.
Reverse Battery Protection Support	Internal clamp and external diode/resistor network compatibility enables robust operation in vehicles with reversed jumper cable connections.
AEC-Q100 Grade 0 Qualification	Rated for −40 to +150 °C junction temperature; validated for automotive engine bay and headlamp module environments per stress test standards.

Applications

Automotive Signal Lamps

Radar & Sensor Power Supply

Use Scenario: Driving R10W filament bulbs and multi-LED rear combinations in tail/brake/turn modules.

IC Role / Device Role / Timing Role: High-side switch with real-time current monitoring to detect bulb burnout and LED string failure before CAN bus timeout.

Use Value: Eliminates discrete current-sense amplifiers and comparators; reduces BOM count by 3–5 components per channel while meeting UNECE R128 compliance.

Use Scenario: Providing protected 12 V supply to 77 GHz radar transceivers and camera image sensors in ADAS ECUs.

IC Role / Device Role / Timing Role: Smart power switch with thermal derating and short-circuit limiting to prevent system-wide shutdown during EMI-induced transients.

Use Value: Maintains radar uptime during load dump events (40 V/500 ms) and enables firmware-triggered fault logging via MultiSense V_CC and T_CHIP telemetry.

Body Control Module Outputs

Electric Power Steering Auxiliary Loads

Use Scenario: Controlling door lock actuators, seat heaters, and HVAC blower motors in centralized body controllers.

IC Role / Device Role / Timing Role: Single-channel high-side driver with programmable latch-off to isolate failed loads without disabling adjacent functions.

Use Value: Reduces diagnostic false positives by distinguishing between open-load (OFF-state) and short-to-VCC faults-improving OBD-II DTC accuracy.

Use Scenario: Powering torque sensor bias supplies and motor phase monitoring circuits in EPS systems.

IC Role / Device Role / Timing Role: Precision current-limited switch with <100 µs overload response, preventing fault propagation into steering assist algorithms.

Use Value: Enables ISO 26262 ASIL-B decomposition by providing independent hardware-level current limiting separate from MCU software control loops.

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 BTS716G	Higher R_ON (200 mΩ), no analog temperature/V_CC feedback, only current sense and basic fault flag.	Lacks multiplexed diagnostics; requires external ADC for thermal monitoring and supply telemetry.	Choose when cost sensitivity outweighs diagnostic depth and system-level telemetry requirements.
NXP MC33883	Lower current limit (8 A), SOIC-8 package only, no FaultRST latch configuration-fixed auto-restart behavior.	Not suitable for applications requiring configurable fault recovery (e.g., brake lamp latching on failure).	Prefer for space-constrained modules where latch-off is unnecessary and thermal margin is sufficient.

Compared with VN7140AJTR, BTS716G trades diagnostic richness for lower unit cost and wider availability, while MC33883 sacrifices configurability and current capability for compactness-making VN7140AJTR optimal for ASIL-B–aligned systems needing integrated, multiplexed telemetry and deterministic fault recovery.

Availability

VN7140AJTR is available at Aetrix Electronics and suitable for automotive lighting control, ADAS sensor power distribution, and body electronics requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for VN7140AJTR 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-grade power ICs, microcontrollers, and sensors with vertical manufacturing capabilities.

VN7140AJTR belongs to the VIPower family of smart power switches, designed specifically for functional safety–compliant automotive power distribution with integrated diagnostics and protection-targeting ASIL-B system integration in lighting, chassis, and ADAS domains.

FAQ

What is the maximum transient voltage the VN7140AJTR can withstand?

The VN7140AJTR supports up to 40 V transient supply voltage per ISO 16750-2 Test B (clamped), with internal overvoltage clamp activating at 41–52 V depending on junction temperature. This protects against load-dump events without requiring external TVS diodes in most 12 V automotive applications.

How does the MultiSense pin distinguish between current, temperature, and VCC measurements?

MultiSense output mode is selected by SEL0 and SEL1 logic levels: LL for load current (I_OUT/K factor), LH for chip temperature (−5.5 mV/K slope), and HH for V_CC/4 scaling. Each mode settles within 60 µs after SEn activation, and the analog output requires an external 1 kΩ–2.7 kΩ pull-down resistor for proper voltage translation.

Can VN7140AJTR drive inductive loads like fuel injectors or solenoids?

Yes-the device integrates an internal clamp diode and supports dynamic voltage slopes up to 0.7 V/µs during turn-off. For inductive loads, the V_DEMAG clamp limits turn-off voltage to V_CC − 38 V (at −40°C) to suppress back-EMF, and its 12 A current limit prevents coil saturation damage during short-circuit conditions.

Is the FaultRST pin mandatory for normal operation?

No-FaultRST is optional. When left unconnected or pulled high, the device defaults to auto-restart mode after thermal or overload faults. Pulling it low enables latched-off behavior, requiring an active reset pulse to restore output. This flexibility supports both fail-operational (auto-restart) and fail-safe (latch) system architectures.

VN7140AJTR 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):: 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:: PowerSSO-16

VN7140AJTR FAQ

1.How can I place an order for VN7140AJTR through Aetrix?

Please submit a Request for Quotation (RFQ) for VN7140AJTR 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 VN7140AJTR reliable?

The price and inventory of VN7140AJTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for VN7140AJTR is usually 5 days.

3.What payment methods are accepted for VN7140AJTR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VN7140AJTR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for VN7140AJTR?

VN7140AJTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your VN7140AJTR 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 VN7140AJTR?

For technical support, including VN7140AJTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VN7140AJTR requirements.

6.How does Aetrix verify that VN7140AJTR is sourced from the original manufacturer or authorized distributors?

All VN7140AJTR 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 VN7140AJTR meets industry standards.

7.What is the process for return or replacement of VN7140AJTR?

All VN7140AJTR units undergo pre-shipment inspection (PSI). If there is an issue with VN7140AJTR, 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 VN7140AJTR part is unused and in its original packaging.

Return procedure for VN7140AJTR:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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