Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

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

STMicroelectronics VN03

Name: VN03
Brand: STMicroelectronics
SKU: VN03
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: VN03

Manufacturer:: STMicroelectronics

Category:: Power Distribution Switches, Load Drivers

Package:: Pentawatt-5 (Vertical, Bent and Staggered Leads)

Datasheet:: VN03.pdf

Description:: IC PWR DRVR N-CH 1:1 5PENTAWATT

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:3,772

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

VN03 from STMicroelectronics is a high-side smart power solid-state relay IC designed for automotive ISO-compliant load switching, featuring 4A continuous output current at Tc=85°C, 0.5Ω on-state resistance, and integrated open-drain diagnostic output for open-load and overtemperature detection in 12V battery systems.

For engineers reviewing the VN03 datasheet, VN03 pinout, VN03 application, or VN03 equivalent, this device serves as a thermally protected, logic-level-compatible high-side switch for inductive/resistive loads in engine control units, body electronics, and lighting modules-requiring precise fault reporting, fast demagnetization, and load-dump immunity per ISO 7637-2 Pulse 5.

Technical Context

The VN03 integrates a vertical Power MOSFET with embedded protection circuitry including thermal shutdown (140°C trip, 125°C reset), under-voltage lockout (5V), and open-load detection with 5ms filtering. Its diagnostic output reflects real-time status via voltage thresholds defined in ISO 16750-2.

It implements active inductive load demagnetization by clamping V_OUT to −18V during turn-off, reducing dissipation in solenoids and relays. The device complies with automotive-grade stress testing-including reverse battery (−26V with Schottky protection) and load dump (ISO 7637-2 Pulse 5 Level II without external components).

Key Specifications

Parameter	Value and Actual Design Meaning
Max Output Current	4 A continuous at Tc = 85°C - supports high-power solenoids and lamps without external heatsinking in ambient-constrained ECUs.
R_DS(on)	0.5 Ω at I_OUT = 0.7 A, Tj = 25°C - ensures <3.6V drop at full 4A load, minimizing thermal rise in 13V automotive systems.
V_DEMAG	−18 V typical clamp voltage - enables rapid energy dissipation from inductive loads, cutting demag time by >3× vs passive diode solutions.
Diagnostic Delay	tpol = 50–700 µs, tpovl = 5–10 µs - meets ISO-defined timing windows for open-load and overtemperature reporting in safety-critical nodes.
V_CC Range	5.5–26 V - accommodates cold-crank (5.5V) to load-dump (26V) transients without latch-up or functional interruption.
Input Logic Compatibility	VIH = 2 V min, VIL = 0.8 V max - directly interfaces with 5V microcontrollers and CAN/LIN transceivers without level-shifting.

Pinout & Package

PENTAWATT package: 5-pin through-hole, isolated metal tab for thermal conduction, ECOPACK® lead-free, R_thj-case = 4.5°C/W.

Pin/Terminal	Circuit Role	Design Meaning
1 (GND)	Power ground reference	Common return path for load current and internal bias; electrically isolated from case for floating load configurations.
2 (IN)	Logic input control	5V-tolerant digital input; hysteresis of 0.5V prevents noise-induced toggling in noisy vehicle harnesses.
3 (VCC)	Supply input	Battery rail connection; withstands ISO 7637-2 Pulse 5 up to 46.5V (Level II) without external protection.
4 (STATUS)	Open-drain diagnostic output	Active-low reporting of open load (off/on), short-to-VCC, and overtemperature; requires external pull-up resistor.
5 (OUT)	High-side switched output	Drives grounded loads; features −18V demag clamp and 60V V_(BR)DSS for transient robustness.

Key Features

Feature	Design Value
ISO 16750-2 compliant protection	Withstands Load Dump Pulse 5 Level II (46.5V) without external components-reduces BOM count and PCB area in ECU designs.
Integrated open-load diagnostics	5ms filtered STATUS output distinguishes brief disconnections (<5ms) from true faults-prevents false alarms in vibration-prone environments.
Fast inductive demagnetization	−18V clamp reduces demag time and peak voltage stress on downstream components, enabling smaller snubbers and higher reliability.
Thermal shutdown with hysteresis	140°C trip / 125°C reset provides self-recovering protection against sustained overload or poor heatsinking-no manual reset required.
Reverse battery tolerance	Supports −26V reverse polarity with single Schottky diode on GND pin-meets OEM requirements for jump-start resilience.

Applications

Engine Control Module (ECM)

Body Control Module (BCM)

Use Scenario: Driving fuel injector solenoids and ignition coil primaries in gasoline/diesel engines.

IC Role / Device Role / Timing Role: High-side switch with fast demagnetization and ISO-compliant diagnostics for real-time fault logging.

Use Value: −18V V_DEMAG cuts coil energy decay time by >60%, enabling tighter spark timing control and reduced EMI.

Use Scenario: Controlling door locks, window lift motors, and interior lighting in centralized body electronics.

IC Role / Device Role / Timing Role: Protected high-side driver with open-load detection for predictive maintenance and CAN-based error reporting.

Use Value: STATUS pin delivers unambiguous open-circuit indication within 700µs (tpol), meeting UNECE R100 diagnostic timing mandates.

Headlamp & Fog Lamp Control

Transmission Solenoid Driver

Use Scenario: Switching 35W–55W halogen/Xenon headlamps with PWM dimming and hot-plug detection.

IC Role / Device Role / Timing Role: Thermally stable high-side switch with under-voltage lockout preventing erratic operation during cranking.

Use Value: 5.5–26V V_CC range maintains lamp regulation across cold-crank (5.5V) to alternator surge (16V+), eliminating flicker.

Use Scenario: Actuating hydraulic pressure control solenoids in automatic transmissions requiring precise current profiling.

IC Role / Device Role / Timing Role: Robust high-side driver with fast turn-off (tf = 4µs) and accurate current limiting for closed-loop PWM control.

Use Value: 4A continuous rating and 0.5Ω R_DS(on) support 1.2A nominal solenoid currents with <0.6W conduction loss at 13V.

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-side automotive switch applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
INFINEON BTS4140N	Lower R_DS(on) (0.35Ω), higher I_OUT (7.5A), but no integrated demag clamp; requires external flyback diode.	Lacks −18V active demag-unsuitable for high-frequency solenoid PWM where voltage overshoot must be minimized.	Select when maximum current capacity and minimal conduction loss outweigh need for integrated demagnetization.
NXP MC33883	Higher V_CC max (40V), includes SPI interface and enhanced diagnostics, but larger SOIC-16 package and higher quiescent current (2mA vs 15µA).	Designed for networked, multi-channel driver ICs-not optimized for discrete high-side replacement in legacy analog ECU designs.	Select when CAN/SPI-controlled diagnostics and multi-output coordination are required over standalone simplicity.

Compared with VN03, BTS4140N offers superior current handling but lacks autonomous demagnetization, while MC33883 adds digital control at the cost of board space and standby power-making VN03 optimal for cost-sensitive, single-channel ISO-compliant analog switching.

Availability

VN03 is available at Aetrix Electronics and suitable for engine control modules, body electronics, headlamp drivers, and transmission solenoid circuits requiring stable component supply and long-term automotive lifecycle support.

Supply support for VN03 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 broad AEC-Q100 qualification coverage.

VN03 belongs to ST's "VIPower" high-side intelligent power switch family, engineered specifically for ISO 16750-2/ISO 7637-2-compliant automotive load driving with integrated diagnostics and protection.

FAQ

What is the maximum safe operating temperature for VN03?

The VN03 junction operates safely from −40°C to +150°C, with thermal shutdown activating at 140°C and automatic recovery at 125°C. Its R_thj-case of 4.5°C/W allows direct mounting to a heatsink; at 4A load and 25°C ambient, case temperature remains below 85°C with ≥10 cm² copper pour.

Does VN03 require an external flyback diode for inductive loads?

No-VN03 integrates active demagnetization with a −18V clamp on the OUT pin, eliminating the need for an external flyback diode in most automotive solenoid and relay applications. This reduces component count, PCB area, and voltage overshoot risk during turn-off.

How does the STATUS pin indicate open-load conditions?

The STATUS pin goes low (≤0.4V) when an open load is detected in either ON or OFF state, with 5ms filtering to reject transient disconnections. In OFF state, it reports open load if I_OL < 35mA; in ON state, it reports open load if V_OUT > 2.5V (indicating no current flow despite command).

Can VN03 drive loads directly from a 24V truck battery system?

Yes-VN03 supports V_CC up to 26V and withstands ISO 7637-2 Pulse 5 Level III (with 150Ω + 1000µF external filter) in 24V systems. Its 60V V_(BR)DSS rating ensures safe operation during load dump transients common in heavy-duty vehicle electrical architectures.

VN03 Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Package/Case:: Pentawatt-5 (Vertical, Bent and Staggered Leads)

Series:: -

Packaging:: Tube

Product Status:: Obsolete

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:: 5.5V ~ 26V

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

Current - Output (Max):: 4A

Rds On (Typ):: 500mOhm (Max)

Input Type:: Non-Inverting

Features:: Status Flag

Fault Protection:: Open Load Detect, Over Temperature

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

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: 5-PENTAWATT

VN03 FAQ

1.How can I place an order for VN03 through Aetrix?

Please submit a Request for Quotation (RFQ) for VN03 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 VN03 reliable?

The price and inventory of VN03 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for VN03 is usually 5 days.

3.What payment methods are accepted for VN03?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VN03 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for VN03?

VN03 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your VN03 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 VN03?

For technical support, including VN03 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VN03 requirements.

6.How does Aetrix verify that VN03 is sourced from the original manufacturer or authorized distributors?

All VN03 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 VN03 meets industry standards.

7.What is the process for return or replacement of VN03?

All VN03 units undergo pre-shipment inspection (PSI). If there is an issue with VN03, 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 VN03 part is unused and in its original packaging.

Return procedure for VN03:

1.Submit a request within 90 days.

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

Tech Hub

2026-09-03 Logic Level Shifter: How to Connect 3.3V and 5V Logic Safely

A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.

2026-09-03 74HC595 vs TPIC6B595: Output Drive, Pinout, Current, and Load Selection

The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…

2026-09-01 74HC595 Pinout, Timing, Output Current, and Applications

The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…

2026-09-01 Latch vs Flip-Flop: Timing, Differences and Design Choices

A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…

2026-08-30 D Latch Circuit: Truth Table, Timing, ICs and Applications

A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …

2026-08-28 SR Latch Explained: NOR and NAND Circuits, Truth Tables, and Applications

An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…

2026-08-27 Latch Circuit: SR and D Latches, Truth Tables, Timing, and Applications

Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…

2026-08-21 What Is an LED Driver? Types, Circuits, Dimming, and Selection

An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…

2026-08-18 Operational Amplifier (Op Amp): Basics, Configurations, Feedback and Applications

Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…

2026-08-14 Jumper Cables: How to Use, Connect and Choose Them Safely

Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…