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

STMicroelectronics VNI4140KTR-32

Name: VNI4140KTR-32
Brand: STMicroelectronics
SKU: VNI4140KTR-32
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: VNI4140KTR-32

Manufacturer:: STMicroelectronics

Category:: Power Distribution Switches, Load Drivers

Package:: 24-BSOP (0.295", 7.50mm Width) Exposed Pad

Datasheet:: VNI4140KTR-32.pdf

Description:: IC PWR DRVR N-CHAN 1:1 PWRSSO24

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Product details

Overview

VNI4140KTR-32 from STMicroelectronics is a monolithic 4-channel high-side smart power solid-state relay realized in VIPower™ technology, designed to drive grounded loads (resistive, capacitive, or inductive) with up to 1.0 A DC output current per channel, R_DS(on) of 0.14 Ω at 0.5 A and 25 °C, integrated per-channel overtemperature and short-circuit protection, and 3.3 V/5 V-compatible logic inputs - used in programmable logic controllers for industrial I/O expansion.

For engineers reviewing the VNI4140KTR-32 datasheet, VNI4140KTR-32 pinout, VNI4140KTR-32 application, or VNI4140KTR-32 equivalent, key selection criteria include per-channel thermal fault reporting via open-drain STATUS pins, EN 60947-5-1 DC-13 load compliance, junction shutdown temperature of 150–190 °C, and PowerSSO-24 package thermal resistance of 2 °C/W (junction-to-case).

Technical Context

This device implements independent per-channel active current limiting and dual-stage thermal protection: junction-level shutdown (T_TSD = 150–190 °C) with hysteresis (7–15 °C), and case-level shutdown (T_CSD = 125–135 °C) with non-simultaneous restart to limit supply peak current during multi-channel overload.

The integrated charge pump enables high-side switching without external bootstrap components; it operates at 1.45 MHz and supports fast demagnetization (V_DEMAG = V_CC − 41 to V_CC − 52 V), undervoltage lockout (7–10.5 V with 0.4–0.5 V hysteresis), and loss-of-GND detection (0.5 mA leakage current at 24 V).

Key Specifications

Parameter	Value and Actual Design Meaning
R_DS(on)	0.14 Ω max @ 0.5 A, 25 °C - ensures ≤70 mW conduction loss per channel at rated load.
Output current	1.0 A DC per channel - supports EN 60947-5-1 DC-13 load class for industrial solenoids and valves.
Turn-on delay	16–35 µs - enables deterministic timing control in PLC scan cycles up to 10 kHz input switching.
STATUS pin logic	Open-drain, active-low - directly interfaces with 3.3 V microcontrollers for real-time per-channel fault reporting.
V_CC clamp	41–52 V - protects against transients per IEC 61000-4-4/5 without external TVS diodes.
Thermal shutdown	Junction T_TSD = 150–190 °C, case T_CSD = 125–135 °C - prevents permanent damage under sustained overload.
Input compatibility	3.3 V CMOS/TTL logic - eliminates level-shifter requirement in modern industrial MCU-based I/O modules.

Pinout & Package

Delivered in PowerSSO-24 package (10.1 × 7.4 mm body, 2.47 mm height), featuring exposed thermal pad (TAB connected to VCC) and optimized copper layout for 2 °C/W junction-to-case thermal resistance.

Pin/Terminal	Circuit Role	Design Meaning
1, TAB	VCC	Main supply input (10.5–36 V); TAB is electrically connected to VCC and serves as primary thermal path to PCB.
2, 4, 8, 10	IN1–IN4	CMOS/TTL-compatible logic inputs - enable individual channel control with 0.8 V low / 2.2 V high thresholds and 0.15 V hysteresis.
3, 5, 7, 9	STAT1–STAT4	Open-drain fault indicators - pulled low during per-channel overtemperature; require external pull-up for MCU interrupt sensing.
6	GND	Reference ground for internal circuitry; loss-of-GND detection triggers 0.5 mA current sink to flag wiring faults.
13–15, 16–18, 19–21, 22–24	OUT4–OUT1	High-side power outputs - each drives one side of load (other side grounded); internally protected against short-circuit and avalanche energy (5 J).
11, 12	NC	No-connect terminals - must remain unconnected per datasheet; no internal connection or function.

Key Features

Feature	Design Value
Per-channel diagnostic	Four independent open-drain STAT pins report real-time overtemperature status - enables precise fault localization in multi-load systems.
Non-simultaneous restart	Overloaded channels restart at staggered intervals after case-cooling - avoids supply rail collapse during recovery in 4-channel operation.
DC-13 load compliance	Validated per EN 60947-5-1 for resistive, inductive, and capacitive loads up to 1.0 A - certified for industrial solenoid, relay, and valve drivers.
Fast demagnetization	V_DEMAG = V_CC − 41 V minimum - suppresses back-EMF spikes during inductive turn-off, reducing snubber requirements.
Reverse polarity immunity	Detects GND disconnection and sinks 0.5 mA - allows implementation of on-board reverse-polarity protection using resistor or diode solutions.

Applications

Programmable Logic Controller (PLC) Output Module

Industrial PC Peripheral I/O Card

Use Scenario: Driving 24 V DC solenoid valves and indicator lamps in modular PLC racks with hot-swap capability.

IC Role / Device Role / Timing Role: High-side switch with integrated current limiting and thermal monitoring - replaces discrete MOSFET + driver + protection IC combinations.

Use Value: Eliminates need for external current-sense resistors and thermal sensors while maintaining EN 60947-5-1 DC-13 compliance and <35 µs channel response.

Use Scenario: Adding isolated digital output capability to industrial PC motherboards for CNC machine tool control signals.

IC Role / Device Role / Timing Role: Four-channel buffered high-side driver with 3.3 V logic interface - bridges legacy ISA/PCI bus voltage domains to 24 V field-side loads.

Use Value: Reduces BOM count by 60% vs. discrete solutions and supports 10 kHz update rate required for motion control loop synchronization.

Numerical Control Machine Axis I/O

Factory Automation Safety Interlock

Use Scenario: Controlling hydraulic directional valves and brake actuators in multi-axis CNC machines with strict EMI immunity.

IC Role / Device Role / Timing Role: ESD-hardened (±25 kV per IEC 61000-4-2) high-side driver with IEC 61000-4-4/5 transient protection - operates reliably in noisy factory environments.

Use Value: Achieves >80 V/µs dV/dt immunity without external filters, reducing PCB area by 35% and eliminating field-failure root causes.

Use Scenario: Enabling safety-critical emergency stop circuits that require guaranteed fault detection and automatic channel disable.

IC Role / Device Role / Timing Role: Smart power switch with loss-of-GND detection and per-channel thermal fault signaling - meets SIL-2 functional safety prerequisites.

Use Value: Provides hardware-enforced fail-safe behavior (e.g., immediate channel shutdown on GND disconnect) without software polling overhead.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
IPS2050H	Single-channel, 0.8 A rated, 0.18 Ω R_DS(on), no STATUS pin - requires external fault monitoring.	Lacks per-channel diagnostics and multi-channel integration - suitable only for low-channel-count designs.	Select when board space permits discrete channel replication and diagnostic simplicity is acceptable.
VNQ5E160KTR-E	Quad-channel, 1.4 A rated, 0.12 Ω R_DS(on), includes SPI diagnostic interface - higher integration but requires serial bus overhead.	Supports advanced diagnostics (current readback, fault logging) but increases firmware complexity.	Select when centralized fault analysis and predictive maintenance are required over simple GPIO-based STAT reporting.

Compared with VNI4140KTR-32, IPS2050H trades channel density and diagnostic granularity for lower unit cost and simpler layout, while VNQ5E160KTR-E adds SPI-based intelligence at the expense of real-time GPIO responsiveness and higher system-level software burden.

Availability

VNI4140KTR-32 is available at Aetrix Electronics and suitable for programmable logic controllers, industrial PC peripheral I/O, and numerical control machines requiring stable component supply, long-term lifecycle support, and automotive-grade reliability in harsh environments.

Supply support for VNI4140KTR-32 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 specializing in power management, analog, and embedded processing solutions for industrial, automotive, and consumer markets.

The VNI4140KTR-32 belongs to ST's VIPower™ high-side driver product line, engineered specifically for robust, high-density industrial I/O where integrated protection, diagnostic visibility, and EN 60947-5-1 compliance are mandatory.

FAQ

What is the maximum continuous output current per channel for VNI4140KTR-32?

The VNI4140KTR-32 supports 1.0 A DC output current per channel under recommended operating conditions (10.5–36 V V_CC, −40 to +125 °C). Its current-limiting threshold is 1.1–2.6 A for short-circuit events, and thermal shutdown activates if junction temperature exceeds 150–190 °C.

How does the non-simultaneous channel restart work during thermal overload?

When multiple channels exceed case temperature T_CSD (125–135 °C), they do not restart concurrently. Instead, each channel waits for case temperature to fall to T_CR (110 °C) independently, introducing staggered delays to prevent cumulative inrush current from collapsing the 24 V supply rail during recovery.

Can VNI4140KTR-32 drive inductive loads without external flyback diodes?

Yes - its integrated fast demagnetization circuit clamps output voltage to V_CC − 41 V minimum during turn-off, safely dissipating inductive energy. This eliminates need for external flyback diodes in most DC-13 compliant applications, though external suppression may still be advised for ultra-high-energy loads (>5 J).

What is the role of the NC pins (11 and 12) in the PowerSSO-24 package?

Pins 11 and 12 are no-connect terminals with no internal connection. They must remain unconnected in PCB layout and routing; soldering or tying them to any net violates the device's thermal and electrical specifications and risks malfunction or premature failure.

VNI4140KTR-32 Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Package/Case:: 24-BSOP (0.295", 7.50mm Width) Exposed Pad

Series:: VIPower™

Packaging:: Tape & Reel (TR)

Product Status:: Active

Switch Type:: General Purpose

Number of Outputs:: 4

Ratio - Input:Output:: 1:1

Output Configuration:: High Side

Output Type:: N-Channel

Interface:: On/Off

Voltage - Load:: 10.5V ~ 36V

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

Current - Output (Max):: 1A

Rds On (Typ):: 80mOhm (Max)

Input Type:: Non-Inverting

Features:: Status Flag

Fault Protection:: Current Limiting (Fixed), Over Temperature

Operating Temperature:: -40°C ~ 125°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: PowerSSO-24 Exposed Bottom Pad

VNI4140KTR-32 FAQ

1.How can I place an order for VNI4140KTR-32 through Aetrix?

Please submit a Request for Quotation (RFQ) for VNI4140KTR-32 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 VNI4140KTR-32 reliable?

The price and inventory of VNI4140KTR-32 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for VNI4140KTR-32 is usually 5 days.

3.What payment methods are accepted for VNI4140KTR-32?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VNI4140KTR-32 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for VNI4140KTR-32?

VNI4140KTR-32 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your VNI4140KTR-32 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 VNI4140KTR-32?

For technical support, including VNI4140KTR-32 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VNI4140KTR-32 requirements.

6.How does Aetrix verify that VNI4140KTR-32 is sourced from the original manufacturer or authorized distributors?

All VNI4140KTR-32 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 VNI4140KTR-32 meets industry standards.

7.What is the process for return or replacement of VNI4140KTR-32?

All VNI4140KTR-32 units undergo pre-shipment inspection (PSI). If there is an issue with VNI4140KTR-32, 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 VNI4140KTR-32 part is unused and in its original packaging.

Return procedure for VNI4140KTR-32:

1.Submit a request within 90 days.

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

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