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

STMicroelectronics VN7003ALHTR

Name: VN7003ALHTR
Brand: STMicroelectronics
SKU: VN7003ALHTR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: VN7003ALHTR

Manufacturer:: STMicroelectronics

Category:: Power Distribution Switches, Load Drivers

Package:: OctaPAK (7 leads + Tab)

Datasheet:: VN7003ALHTR.pdf

Description:: IC PWR SWITCH N-CHAN 1:1 OCTAPAK

Quantity:: RFQ Add To RFQ list

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Inventory:1,191

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Product details

Overview

VN7003ALHTR from STMicroelectronics is a single-channel automotive-grade smart high-side driver in Octapak package, featuring analog CurrentSense feedback, 3.5 mΩ typical on-state resistance at 15 A/25°C, 135 A current limitation, and operation down to 3 V for cold-cranking. It drives grounded 12 V inductive/resistive loads (e.g., glow plugs, heating elements) via 3 V/5 V CMOS-compatible INPUT control.

For engineers reviewing the VN7003ALHTR datasheet, VN7003ALHTR pinout, VN7003ALHTR application, or VN7003ALHTR equivalent, key selection criteria include cranking voltage margin (3 V), diagnostic capability via CS and FR_DIAG pins, latch-off configurability, and AEC-Q100 qualification for under-hood deployment.

Technical Context

This device implements VIPower® M0-7 technology to integrate power MOSFET, protection logic, analog current sensing, and fault diagnostics in one die. Its architecture enables simultaneous real-time load current monitoring (via proportional CS current), open-load detection in OFF state, and short-to-VCC identification - all without external components.

The FR_DIAG pin controls diagnostic latching behavior: pulled low disables auto-restart and enables OFF-state diagnostics; pulled high configures latch-off on overtemperature or power limitation. Input hysteresis (0.2 V) and undervoltage reset (5 V) ensure robust noise immunity during battery transients per ISO 7637-2 Pulse 5b.

Key Specifications

Parameter	Value and Actual Design Meaning
VCC operating range	4–28 V DC; supports full automotive battery range including deep cold cranking down to 3 V (VUSD_Cranking)
R_ON (typ)	3.5 mΩ at 15 A, 25°C; enables <1 W conduction loss at 15 A, critical for thermal management in confined spaces
I_LIMH (typ)	135 A DC short-circuit current limit; self-regulates power dissipation during overload without external current-sense resistor
I_STBY (max)	0.5 µA at 13 V, 25°C; minimizes parasitic drain on vehicle battery during sleep mode
CS output	Analog current-proportional output (1:2000 ratio); delivers precise real-time load current feedback for ECU closed-loop control
AEC-Q100 grade	Qualified to Grade 0 (−40°C to +150°C junction); validated for under-hood placement in engine control modules
Thermal shutdown	Triggers at 150–175°C junction temperature with 7°C hysteresis; prevents irreversible silicon damage during sustained overload

Pinout & Package

Package: Octapak - thermally enhanced surface-mount package with exposed drain pad for direct PCB copper heatsinking; compatible with JEDEC JESD 51-7 (4-layer board) thermal models.

Pin/Terminal	Circuit Role	Design Meaning
VCC	Battery supply input	Accepts 4–28 V nominal; clamped to 40 V transient; reverse-battery protected to −16 V
OUTPUT	High-side power output	Single switched node connecting to load anode; all OUTPUT pins internally bonded together
GND	Power ground reference	Return path for load current and internal circuitry; loss-of-ground detection enabled
INPUT	Digital control input	CMOS-compatible (3 V/5 V); 0.9 V low / 2.1 V high thresholds with 0.2 V hysteresis
CS	Analog current sense output	Delivers I_OUT/2000 current signal; used for real-time load monitoring and open-load/short-to-VCC diagnosis
FR_DIAG	Diagnostic configuration & fault reporting	Configures latch-off behavior; pulls low to enable OFF-state diagnostics; outputs fault status when high

Key Features

Feature	Design Value
CurrentSense analog feedback	Integrated 1:2000 proportional current mirror enables ECU-based load current measurement without shunt resistor or op-amp
Deep cold cranking support	Operates down to 3 V supply (VUSD_Cranking), meeting LV124 Rev 2013 requirements for start-stop systems
Comprehensive fault diagnostics	Detects short-to-ground, short-to-VCC, OFF-state open-load, thermal shutdown, and undervoltage - all reported via FR_DIAG and CS
Configurable latch-off	FR_DIAG pin selects between auto-restart and latched fault state after overtemperature or power limitation event
VIPower® integrated protection	Self-limiting fast thermal transients, reverse-battery tolerance (−16 V), and loss-of-VCC/loss-of-GND detection reduce system-level protection components

Applications

Glow Plug Control

Engine Heater Management

Use Scenario: Precise timing-controlled activation of diesel engine glow plugs during cold starts.

IC Role / Device Role / Timing Role: High-side switch delivering up to 135 A peak current with real-time current feedback for ECU closed-loop dwell time adjustment.

Use Value: Enables compliance with Euro 6 emission limits by ensuring optimal pre-heating temperature, verified via CS analog output.

Use Scenario: Duty-cycled powering of cabin/engine block heaters in hybrid and EV auxiliary systems.

IC Role / Device Role / Timing Role: Smart power switch with thermal foldback and undervoltage lockout, preventing heater burnout during low-battery conditions.

Use Value: Eliminates need for external thermal cutoffs and voltage supervisors, reducing BOM count by two discrete components.

DC Motor Actuator Drive

Relay Replacement in Power Distribution

Use Scenario: Bidirectional control of HVAC blend door actuators using H-bridge topology with high-side drivers per leg.

IC Role / Device Role / Timing Role: High-current (≥15 A continuous), low-R_ON channel enabling fast motor commutation with minimal heat generation.

Use Value: Reduces conduction losses by >40% vs. mechanical relay equivalents, extending actuator lifetime in vibration-prone environments.

Use Scenario: Solid-state replacement of 40 A automotive relays in body control modules for lighting and accessory circuits.

IC Role / Device Role / Timing Role: Single-channel high-side driver with built-in diagnostics replacing electromechanical relay + fuse + status LED.

Use Value: Provides real-time load current telemetry and fault logging via CS/FR_DIAG, enabling predictive maintenance in fleet telematics systems.

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 BTS7004-1EPP	Higher R_ON (5.5 mΩ typ), no analog CS output, only digital diagnostic flag	Lacks real-time current feedback; requires external shunt for current monitoring	Select when cost sensitivity outweighs need for analog current telemetry
NXP MC33883	Lower current limit (80 A typ), standalone gate driver (requires external MOSFET), no integrated protection	Requires external MOSFET, gate resistor, and protection ICs - higher design complexity	Select when custom power stage tuning or higher voltage rating (>40 V transient) is required

Compared with BTS7004-1EPP and MC33883, VN7003ALHTR offers superior integration (on-die current sense, thermal shutdown, clamp), lower conduction loss, and direct AEC-Q100 Grade 0 qualification - making it optimal for space-constrained, diagnostic-rich automotive power distribution nodes.

Availability

VN7003ALHTR is available at Aetrix Electronics and suitable for automotive power distribution, glow plug control, engine heating systems, and DC motor actuation requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for VN7003ALHTR 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, designing and manufacturing microcontrollers, power ICs, sensors, and automotive-grade analog devices.

VN7003ALHTR belongs to ST's VIPower® high-side driver product line, engineered specifically for intelligent, protected, and diagnosable 12 V automotive power switching - targeting engine management, body electronics, and electrified chassis subsystems.

FAQ

What is the purpose of the FR_DIAG pin?

The FR_DIAG pin configures fault response behavior and reports diagnostic status. When pulled low, it disables latch-off and enables OFF-state open-load detection. When pulled high, it activates latch-off on overtemperature or power limitation events and outputs fault status. Its hysteresis and clamp protection ensure reliable operation during noisy automotive transients.

How does the CurrentSense (CS) pin function in OFF-state diagnostics?

In OFF state (INPUT = low), the CS pin detects open-load and short-to-VCC conditions by measuring leakage current. An open-load yields ~0 µA CS output; a short-to-VCC produces ~100 µA. This allows ECU to distinguish between disconnected loads and wiring faults without activating the output, supporting ISO 26262 ASIL-B diagnostic coverage.

Can VN7003ALHTR operate with a 3 V microcontroller I/O?

Yes. The INPUT pin accepts 3 V CMOS logic levels with guaranteed recognition at V_IL ≤ 0.9 V and V_IH ≥ 2.1 V, plus 0.2 V hysteresis. This ensures compatibility with low-voltage MCUs common in modern automotive domain controllers, even during cranking-induced supply dips.

What thermal derating applies when using VN7003ALHTR on a 2-layer PCB?

On a 2-layer PCB with 2 cm² heatsink copper (JEDEC JESD 51-5), R_thj-amb is 58.1 °C/W. At 15 A and 3.5 mΩ R_ON, conduction loss is ~0.8 W; junction rise is ~47°C above ambient. For 150°C max T_j, max ambient is ~103°C - requiring forced air or larger copper if ambient exceeds this threshold.

VN7003ALHTR Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Package/Case:: OctaPAK (7 leads + Tab)

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:: On/Off

Voltage - Load:: 4V ~ 28V

Voltage - Supply (Vcc/Vdd):: Not Required

Current - Output (Max):: 80A

Rds On (Typ):: 3.5mOhm

Input Type:: Non-Inverting

Features:: Auto Restart

Fault Protection:: Current Limiting (Fixed), Open Load Detect, Over Temperature, Over Voltage, UVLO

Operating Temperature:: -40°C ~ 150°C (TJ)

Grade:: Automotive

Qualification:: AEC-Q100

Mounting Type:: Surface Mount

Supplier Device Package:: OctaPAK 7+1

VN7003ALHTR FAQ

1.How can I place an order for VN7003ALHTR through Aetrix?

Please submit a Request for Quotation (RFQ) for VN7003ALHTR 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 VN7003ALHTR reliable?

The price and inventory of VN7003ALHTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for VN7003ALHTR is usually 5 days.

3.What payment methods are accepted for VN7003ALHTR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VN7003ALHTR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for VN7003ALHTR?

VN7003ALHTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your VN7003ALHTR 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 VN7003ALHTR?

For technical support, including VN7003ALHTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VN7003ALHTR requirements.

6.How does Aetrix verify that VN7003ALHTR is sourced from the original manufacturer or authorized distributors?

All VN7003ALHTR 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 VN7003ALHTR meets industry standards.

7.What is the process for return or replacement of VN7003ALHTR?

All VN7003ALHTR units undergo pre-shipment inspection (PSI). If there is an issue with VN7003ALHTR, 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 VN7003ALHTR part is unused and in its original packaging.

Return procedure for VN7003ALHTR:

1.Submit a request within 90 days.

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

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