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

STMicroelectronics VN340SP

Name: VN340SP
Brand: STMicroelectronics
SKU: VN340SP
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: VN340SP

Manufacturer:: STMicroelectronics

Category:: Power Distribution Switches, Load Drivers

Package:: PowerSO-10 Exposed Bottom Pad

Datasheet:: VN340SP.pdf

Description:: IC PWR DRIVER N-CHAN 1:1 PWRSO10

Quantity:: RFQ Add To RFQ list

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Inventory:1,305

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Product details

Overview

VN340SP from STMicroelectronics is a quad high-side smart power solid-state relay fabricated in VIPower technology, designed to drive four independent resistive or inductive loads referenced to ground. It delivers 0.7A per channel, features 0.2Ω R_DS(on) at 25°C, integrated thermal shutdown at 150–170°C, open-drain diagnostic output per channel, and V_demag = V_CC−55V for fast inductive load demagnetization. Used in industrial PLC output modules and motor control interfaces.

For engineers reviewing the VN340SP datasheet, VN340SP pinout, VN340SP application, or VN340SP equivalent, key selection criteria include per-channel current limiting (0.7–2A), short-circuit protection delay (100µs), undervoltage lockout (5–8V), and PowerSO-10™ package thermal resistance (3°C/W junction-to-case).

Technical Context

The VN340SP integrates four independent high-side switches with active current limiting, thermal sensing, and fault reporting via open-drain DIAG pins. Each channel includes input clamping (≥32V), loss-of-ground detection, and fast turn-off (t_f = 8–20µs) optimized for inductive loads.

It operates across 10–36V supply range, supports logic-compatible inputs (V_IL ≤ 2V, V_IH ≥ 3.5V), and implements autonomous shutdown under overtemperature (T_TSD = 150–170°C) or undervoltage (V_USD = 5–8V), with reset hysteresis (T_R = 135–155°C).

Key Specifications

Parameter	Value and Actual Design Meaning
Output current	0.7A continuous per channel; internally limited to 2A during short-circuit events
R_DS(on)	0.2Ω typical at 25°C; ensures <100mW conduction loss at 0.7A
V_demag	V_CC−55V; enables rapid energy dissipation from 1mH inductive loads
Thermal shutdown	Triggers at 150–170°C; resets autonomously at 135–155°C
Undervoltage lockout	Activates below 5–8V; prevents erratic switching during brownout
Input clamp voltage	≥32V; allows direct connection to 24V logic with external current-limiting resistor
Diagnostic output	Open-drain per channel; pulls low during overtemperature or short-circuit fault

Pinout & Package

Package: PowerSO-10™ - thermally enhanced 10-pin surface-mount package with exposed die pad for low R_th(j-case) (3°C/W).

Pin/Terminal	Circuit Role	Design Meaning
V_CC	Power supply input	45V absolute max; powers internal circuitry and high-side drivers
GND	Ground reference	Common return for logic, diagnostics, and thermal sensing
I/O_n	Channel input	CMOS-compatible control signal per channel (n=1–4)
OUT_n	High-side output	Switched 0.7A load connection; supports inductive demagnetization
DIAG_n	Fault indicator	Open-drain output pulled low during overtemperature or overload on channel n
Ignd	Load ground sense	Detects loss-of-ground condition; disables channel if disconnected

Key Features

Feature	Design Value
Per-channel diagnostic feedback	Individual open-drain DIAG_n outputs enable precise fault localization in multi-load systems
Fast inductive demagnetization	V_demag = V_CC−55V ensures sub-50µs energy collapse for 1mH loads
Loss-of-ground protection	Ignd pin monitors load return path integrity; disables output if GND opens
Input voltage clamping	Internal ≥32V clamp allows safe interfacing with 24V industrial control signals
Thermal foldback	Current limit reduces gradually above 125°C to sustain operation near thermal limit

Applications

PLC Digital Output Module

Industrial Solenoid Driver

Use Scenario: Driving 24V DC solenoids and valves in programmable logic controller racks with field-wiring flexibility.

IC Role / Device Role / Timing Role: Quad high-side switch providing isolated load control, fault reporting, and short-circuit resilience.

Use Value: Eliminates need for discrete flyback diodes and external current-sense circuits while enabling per-channel diagnostics.

Use Scenario: Controlling pneumatic actuators in factory automation where load disconnection must be detected.

IC Role / Device Role / Timing Role: High-side driver with Ignd monitoring and fast turn-off (t_f ≤ 20µs) for reliable valve sequencing.

Use Value: Prevents unintended actuation during ground faults and supports rapid cycle times via V_demag-assisted demagnetization.

Motor Start/Stop Interface

Heater Control Unit

Use Scenario: Enabling/disabling small DC brush motors in HVAC dampers or conveyor subsystems.

IC Role / Device Role / Timing Role: Current-limited high-side switch with thermal shutdown to prevent coil burnout during stall conditions.

Use Value: Sustains 0.7A continuous drive while limiting peak fault current to 2A and auto-recovering after cooling.

Use Scenario: Switching resistive heating elements in industrial ovens with temperature-dependent duty cycling.

IC Role / Device Role / Timing Role: Robust high-side driver with undervoltage lockout (5–8V) to avoid partial turn-on during power ramp-up.

Use Value: Ensures clean on/off transitions and eliminates thermal runaway risk via integrated TSD and current foldback.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STVN340SPTR	Tape-and-reel variant of same die; identical electrical specs and pinout	No functional difference; intended for automated SMT assembly	Select for volume production requiring reel packaging
IPS2050H	Single-channel 0.7A high-side switch; higher R_DS(on) (0.35Ω); no Ignd pin	Lacks loss-of-ground detection and quad integration; requires four units for same functionality	Choose only when board space permits discrete channel layout and Ignd monitoring is unnecessary

Compared with STVN340SPTR, the VN340SP offers identical performance in tube packaging for prototyping; versus IPS2050H, it delivers integrated quad control, per-channel diagnostics, and critical Ignd fault detection-reducing BOM count and improving system-level safety.

Availability

VN340SP is available at Aetrix Electronics and suitable for industrial PLC output modules, solenoid driver systems, and motor interface designs requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for VN340SP 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 capabilities.

The VN340SP belongs to ST's VIPower® smart power family, engineered specifically for robust industrial I/O conditioning-combining high-voltage tolerance, thermal resilience, and integrated protection in compact packages.

FAQ

What is the maximum safe operating voltage for VN340SP's V_CC pin?

The absolute maximum V_CC rating is 45V, but recommended operating range is 10–36V per datasheet specifications. Operation above 36V risks triggering undervoltage lockout recovery instability and exceeds guaranteed R_DS(on) and thermal performance limits.

Does VN340SP require external flyback diodes when driving inductive loads?

No external flyback diodes are required. The device provides internal fast demagnetization via V_demag = V_CC−55V, which safely clamps inductive kickback without external components-verified for 1mH loads in standard test configurations.

How does the Ignd pin function during normal and fault conditions?

The Ignd pin continuously monitors the load return path. If disconnected while V_CC ≤ 36V, the corresponding channel shuts off immediately. During normal operation, Ignd sinks ≤2mA and must be tied to system ground-no pull-up or series resistor is needed.

Can VN340SP be used in parallel to increase current capacity?

No. The VN340SP is not designed for paralleling. Mismatched R_DS(on), thermal gradients, and unbalanced current sharing can cause premature failure. For >0.7A per load, use a single-channel part rated for higher current, such as the VN5E050AJ.

VN340SP Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Package/Case:: PowerSO-10 Exposed Bottom Pad

Series:: -

Packaging:: Tube

Product Status:: Obsolete

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:: 10V ~ 36V

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

Current - Output (Max):: 700mA

Rds On (Typ):: 200mOhm (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:: 10-PowerSO

VN340SP FAQ

1.How can I place an order for VN340SP through Aetrix?

Please submit a Request for Quotation (RFQ) for VN340SP 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 VN340SP reliable?

The price and inventory of VN340SP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for VN340SP is usually 5 days.

3.What payment methods are accepted for VN340SP?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VN340SP transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for VN340SP?

VN340SP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your VN340SP 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 VN340SP?

For technical support, including VN340SP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VN340SP requirements.

6.How does Aetrix verify that VN340SP is sourced from the original manufacturer or authorized distributors?

All VN340SP 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 VN340SP meets industry standards.

7.What is the process for return or replacement of VN340SP?

All VN340SP units undergo pre-shipment inspection (PSI). If there is an issue with VN340SP, 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 VN340SP part is unused and in its original packaging.

Return procedure for VN340SP:

1.Submit a request within 90 days.

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

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