STMicroelectronics VNI2140JTR

Overview

VNI2140JTR from STMicroelectronics is a dual-channel high-side smart power solid-state relay fabricated in VIPower M0-3 technology, designed for industrial I/O control of resistive or inductive loads with ground-referenced return paths. It delivers 0.75 A nominal current per channel, features integrated current limitation (1 A), junction and case overtemperature protection (TTSD = 170 °C, TCSD = 139 °C), and open-drain diagnostic outputs for real-time fault reporting in PLC output modules.

For engineers reviewing the VNI2140JTR datasheet, VNI2140JTR pinout, VNI2140JTR application, or VNI2140JTR equivalent, key selection criteria include channel thermal independence, 3.3 V CMOS/TTL-compatible inputs, fast demagnetization capability (VDEMAG ≥ VCC − 52 V), short-to-VCC detection, and undervoltage shutdown (VUSD = 8 V).

Technical Context

The VNI2140JTR integrates two independent high-side power switches with embedded protection logic: each channel autonomously manages thermal shutdown and restart (TCR = 110 °C) without affecting the other, enabling robust operation under partial overload. Its diagnostic architecture uses open-drain outputs to signal overtemperature, open-load (OFF-state), and short-to-VCC faults via voltage threshold detection (VOL = 3 V).

Switching performance includes turn-on delay < 8 µs and turn-off response < 40 µs at 24 V/48 Ω, with dV/dt(ON) ≥ 3 V/µs and dV/dt(OFF) ≥ 4 V/µs - optimized for reliable control of solenoids, valves, and contactors while suppressing inductive kickback via controlled demagnetization.

Key Specifications

Pinout & Package

Delivered in PowerSSO-12™ package (5.0 × 4.0 × 1.6 mm, exposed thermal pad), this 12-pin surface-mount device features dual high-side outputs with shared supply and ground terminals, plus dedicated diagnostic and input pins per channel.

Key Features

Applications

Equivalent & Alternatives

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

Compared with IPS2050H and VNI8200AJTR, the VNI2140JTR uniquely balances dual-channel autonomy, comprehensive diagnostics (open-load + short-to-VCC), and fast switching - making it optimal for mission-critical dual-actuator control where channel isolation and fault visibility are mandatory.

Availability

VNI2140JTR is available at Aetrix Electronics and suitable for industrial programmable logic controllers, CNC machine tool I/O subsystems, and factory automation terminal blocks requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for VNI2140JTR 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 solutions with vertical manufacturing capabilities.

The VNI2140JTR belongs to ST's VIPower® high-side driver product line, engineered specifically for ruggedized industrial digital output stages requiring integrated protection, diagnostics, and thermal resilience in harsh electromagnetic environments.

FAQ

What is the maximum supply voltage the VNI2140JTR can withstand?

The VNI2140JTR supports a continuous supply voltage range of 9 V to 45 V, with absolute maximum rating of +45 V on VCC and −0.3 V reverse supply tolerance. Exceeding 45 V risks permanent damage, and operation below 9 V triggers undervoltage shutdown at 8 V (typical) with 0.5 V hysteresis.

How does the VNI2140JTR detect open-load conditions in OFF-state?

It monitors output voltage against VOL = 3 V (typical) using an internal comparator. When the output rises above this threshold due to absence of load current - enabled by an external VCC-pullup resistor - the corresponding Diag pin pulls low after 500 µs (tDOL), signaling open-load fault without requiring external circuitry.

Can both channels operate simultaneously during thermal overload?

Yes - thermal case shutdown (TCSD) is per-channel and non-simultaneous. If Channel 1 reaches TCSD = 139 °C, it shuts down and restarts only when case cools to TCR = 110 °C, while Channel 2 continues normal operation if within its thermal limits, ensuring functional continuity.

Is external flyback diode required for inductive loads?

No - the VNI2140JTR provides intrinsic fast demagnetization with VDEMAG ≥ VCC − 52 V, enabling safe energy dissipation from inductive loads (≥1 mH) without external diodes or snubbers, reducing board area and component cost.