STMicroelectronics VNQ500NTR-E

Overview

VNQ500NTR-E from STMicroelectronics is a quad-channel high-side driver IC in PowerSSO-12 package, designed for ground-referenced resistive/inductive loads in automotive and industrial power distribution. It features 500 mΩ typical on-state resistance, 0.4 A current limitation, junction overtemperature latching at 150–200 °C, and undervoltage shutdown at 4 V (typ), enabling robust load control in 12 V/24 V systems.

For engineers reviewing the VNQ500NTR-E datasheet, VNQ500NTR-E pinout, VNQ500NTR-E application, or VNQ500NTR-E equivalent, key selection criteria include channel independence, diagnostic feedback via I/O pins, loss-of-ground protection, short-circuit resilience, and ISO 7637-2 transient immunity up to ±100 V.

Technical Context

The VNQ500NTR-E integrates four independent VIPower M0-3 high-side switches with CMOS-compatible inputs, chip enable (CE), and per-channel diagnostic feedback via open-drain I/O pins. Each channel implements active current limiting and thermal shutdown with latch behavior-pulling its I/O pin low during overtemperature or overload.

It provides system-level protections including undervoltage lockout (VUSD = 4 V typ), overvoltage shutdown (VOV = 36 V), reverse-battery tolerance via external GND network, and demagnetization energy clamping (VCC − 41 V typ). The device operates across 5.5–36 V supply range and supports load dump transients compliant with ISO 7637-2 Pulse 1, 2a, 3a/b, and 5a.

Key Specifications

Pinout & Package

Package: PowerSSO-12 - surface-mount, exposed thermal pad, 12-pin leadless package optimized for high-current automotive PCB layouts with integrated thermal path to copper pour.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar quad-channel high-side driver applications.

Compared with VNQ500NTR-E, STSPIN250TR offers higher precision per channel but increases BOM count and lacks integrated thermal latching, while TPS4H160-Q1 delivers lower conduction loss and digital configurability at the cost of requiring SPI infrastructure and losing immediate hardware-level fault indication.

Availability

VNQ500NTR-E is available at Aetrix Electronics and suitable for automotive body control units, industrial PLC output stages, truck lighting systems, and off-highway equipment power distribution requiring stable component supply, long lifecycle support, and AEC-Q100-compliant sourcing.

Supply support for VNQ500NTR-E 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 qualification expertise.

VNQ500NTR-E belongs to ST's VIPower family of intelligent power switches, engineered specifically for high-reliability 12 V/24 V automotive load driving with integrated protection and diagnostic capability.

FAQ

What protection features does VNQ500NTR-E provide against short circuits?

VNQ500NTR-E implements active current limitation (0.4 A typ) combined with latched thermal shutdown. During a short, output current is clamped, and if junction temperature exceeds 150–200 °C, the affected channel's I/O pin is pulled low and remains latched until CE is cycled. This prevents destructive power dissipation and enables fault isolation without external circuitry.

Can VNQ500NTR-E drive inductive loads like solenoids or relays?

Yes - VNQ500NTR-E is qualified for inductive loads with built-in demagnetization energy clamping (VCC − 41 V typ) and turn-off voltage slope control (0.3 V/µs). When driving such loads, ST recommends adding a flyback diode across the load and using external Rprot resistors on I/O lines to prevent MCU latch-up during negative transients.

How does the loss-of-ground protection work?

VNQ500NTR-E monitors GND pin integrity continuously. If the GND connection is lost, internal circuitry detects the resulting voltage shift and forces all outputs OFF within microseconds. This prevents uncontrolled high-side switching and potential damage to downstream loads or PCB traces during wiring faults.

Is VNQ500NTR-E compatible with 3.3 V microcontrollers?

Yes - its I/O pins are CMOS-compatible with VIH = 3.25 V (min) and VIL = 1.25 V (max), and input hysteresis of 0.5 V ensures noise immunity. The 10 µA max high-level input current allows direct interfacing with standard 3.3 V GPIOs without level-shifting or pull-up resistors.