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

STMicroelectronics VN540SP-E

Name: VN540SP-E
Brand: STMicroelectronics
SKU: VN540SP-E
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: VN540SP-E

Manufacturer:: STMicroelectronics

Category:: Power Distribution Switches, Load Drivers

Package:: PowerSO-10 Exposed Bottom Pad

Datasheet:: VN540SP-E.pdf

Description:: IC PWR DRIVER 1:1 PWRSO10

Quantity:: RFQ Add To RFQ list

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Inventory:1,773

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Product details

Overview

VN540SP-E from STMicroelectronics is a single high-side smart power solid-state relay in PowerSO-10 package, designed for driving resistive or inductive loads with one side grounded. It delivers up to 2.8 A DC load current, features 50 mΩ R_DS(on), built-in current limiting, thermal shutdown, and open-drain diagnostic output - enabling robust control of automotive lighting, solenoids, and HVAC actuators.

For engineers reviewing the VN540SP-E datasheet, VN540SP-E pinout, VN540SP-E application, or VN540SP-E equivalent, key selection criteria include its 10–36 V supply range, V_demag = V_CC − 55 V fast demagnetization capability, digital input clamped at 32 V, undervoltage shutdown at 5.0–8.0 V, and fault reporting via open-drain STATUS pin.

Technical Context

The VN540SP-E integrates VIPower M0-3 technology to combine power MOSFET switching with protection logic in a monolithic high-side driver. Its active current limiter responds within 100 µs to shorted loads, maintaining system supply stability without external circuitry.

Thermal protection triggers at 150–170 °C junction temperature with automatic reset at 135–155 °C, while the open-drain STATUS pin asserts low during overtemperature, undervoltage, or short-circuit events - per truth table behavior confirmed across operating conditions.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CC Range	10 V to 36 V - supports wide automotive battery voltage range including cold-crank and load-dump transients.
I_OUT Max	2.8 A continuous - sufficient for driving 24 W incandescent lamps or 12 V solenoids at ambient ≤85 °C.
R_DS(on)	50 mΩ (typ.) at I_OUT = 2.8 A, T_J = 25 °C - limits conduction loss to ≤392 mW under full load.
V_demag	V_CC − 55 V - enables fast energy dissipation from inductive loads ≥1 mH without external freewheeling diodes.
STATUS Output	Open-drain, clamped at 32 V - directly interfaces with 3.3 V/5 V microcontrollers for fault detection with pull-up.
Undervoltage Lockout	5.0–8.0 V threshold - prevents erratic switching during battery brownout or ignition-on ramp-up.
Thermal Shutdown	150–170 °C trip, 135–155 °C reset - ensures safe recovery after overload without latch-up or manual reset.

Pinout & Package

Package: PowerSO-10 - thermally enhanced surface-mount package with exposed drain pad for efficient heat transfer to PCB copper plane.

Pin/Terminal	Circuit Role	Design Meaning
V_IN	Digital input control	CMOS-compatible logic input (V_IL ≤ 2.0 V, V_IH ≥ 3.5 V), internally clamped at 32 V.
V_CC	Power supply input	10–36 V main supply rail; reverse polarity protected to −4.0 V.
OUT	High-side power output	Drives load between OUT and ground; handles up to 2.8 A with 50 mΩ on-resistance.
STATUS	Fault diagnostic output	Open-drain output pulled low during overtemperature, undervoltage, or short-circuit events.
GND	Ground reference	Common return path for logic, power, and diagnostic circuits; loss-of-ground detection enabled.

Key Features

Feature	Design Value
Active current limitation	Clamps DC short-circuit current to 2.8–8.0 A (typ./max) within 100 µs - avoids bus voltage collapse during faults.
Fast demagnetization	V_demag = V_CC − 55 V enables <1 µs turn-off dI/dt up to 4 A/µs - suppresses inductive kickback without snubbers.
Integrated diagnostics	Single open-drain STATUS pin reports three fault types (overtemp, UVLO, short) with >100 ms debounce - simplifies MCU polling.
Loss-of-ground protection	Detects open GND connection and disables output - prevents uncontrolled load activation in wiring fault scenarios.

Applications

Automotive Lighting Control

Industrial Solenoid Actuation

Use Scenario: Driving 12 V halogen headlamps or LED modules in body control modules.

IC Role / Device Role / Timing Role: High-side switch with integrated current sensing and thermal foldback.

Use Value: Eliminates need for external current-sense resistor and discrete protection ICs, reducing BOM count by ≥3 components.

Use Scenario: Controlling pneumatic valves or hydraulic solenoids in factory automation PLC outputs.

IC Role / Device Role / Timing Role: Robust high-side driver with fast demagnetization for inductive load turn-off.

Use Value: Reduces coil flyback voltage stress on downstream logic by 55 V below V_CC, enabling use of lower-voltage controllers.

HVAC Blower Motor Staging

Truck Trailer Brake Control

Use Scenario: Sequenced activation of multi-speed blower motors in commercial vehicle climate systems.

IC Role / Device Role / Timing Role: Current-limited high-side switch with status feedback for closed-loop speed staging.

Use Value: Prevents inrush current tripping of upstream fuses during motor startup, supporting staggered enable timing.

Use Scenario: PWM-controlled trailer brake actuation in heavy-duty towing applications.

IC Role / Device Role / Timing Role: Fault-tolerant high-side driver with short-circuit and open-load detection.

Use Value: STATUS pin alerts ECU to open-circuit brake coils before safety-critical braking cycles begin.

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
IPS1025H	Higher R_DS(on) (80 mΩ), lower I_OUT (1.5 A), no V_demag specification	Limited to low-power solenoids; lacks fast demagnetization for inductive loads >500 µH	Select when cost sensitivity outweighs inductive load performance; verify thermal margin at 1.5 A.
TPS27082L	Lower voltage range (4.5–36 V), no open-drain STATUS, only thermal/short protection	No undervoltage or loss-of-ground detection; requires external fault decoding logic	Choose for simpler systems where only overtemperature and short-circuit reporting is needed.

Compared with IPS1025H and TPS27082L, the VN540SP-E uniquely combines fast demagnetization (V_demag = V_CC − 55 V), comprehensive fault reporting on one pin, and 2.8 A drive in PowerSO-10 - making it optimal for automotive and industrial inductive load control where reliability and diagnostic depth are critical.

Availability

VN540SP-E is available at Aetrix Electronics and suitable for automotive lighting control, industrial solenoid actuation, and HVAC blower motor staging requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for VN540SP-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 solutions with vertical manufacturing capabilities.

The VN540SP-E belongs to ST's VIPower high-side driver family, engineered specifically for robust, self-protected switching of inductive and resistive loads in harsh automotive and industrial environments.

FAQ

What is the maximum inductive load energy the VN540SP-E can safely demagnetize?

The VN540SP-E supports single-pulse avalanche energy (E_AS) of 17 J at V_CC = 24 V and I_load = 2.5 A, validated per Figure 8 test circuit. This corresponds to safe turn-off of inductive loads with L ≥ 1 mH and stored energy ≤17 J - typical for 12 V solenoids and small DC motors.

Does the VN540SP-E require an external pull-up resistor on the STATUS pin?

Yes - the STATUS pin is open-drain and requires an external pull-up resistor (typically 4.7 kΩ to V_CC or 3.3 V) to generate a valid high-level signal during normal operation. The pin pulls low only during fault conditions, with clamp voltage up to 36 V to protect interfacing logic.

Can the VN540SP-E be used in parallel for higher current capacity?

No - the VN540SP-E is not designed for paralleling. Its current-limiting threshold has ±30% tolerance (2.8–8.0 A), and thermal coupling between devices in PowerSO-10 packages causes uneven current sharing. For >2.8 A, select a higher-current variant like VN5E050JH-E (5 A).

How does the loss-of-ground protection function operate?

The VN540SP-E continuously monitors GND path integrity. If the GND terminal disconnects or exceeds 1 Ω resistance, internal circuitry disables the output and forces STATUS low within 100 µs - preventing uncontrolled load activation due to floating ground faults in wiring harnesses or connectors.

VN540SP-E Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Package/Case:: PowerSO-10 Exposed Bottom Pad

Series:: VIPower™

Packaging:: Tube

Product Status:: Active

Switch Type:: General Purpose

Number of Outputs:: 1

Ratio - Input:Output:: 1:1

Output Configuration:: High Side

Output Type:: -

Interface:: On/Off

Voltage - Load:: 10V ~ 36V

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

Current - Output (Max):: 2.8A

Rds On (Typ):: 50mOhm (Max)

Input Type:: Non-Inverting

Features:: Status Flag

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

Operating Temperature:: -25°C ~ 85°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 10-PowerSO

VN540SP-E FAQ

1.How can I place an order for VN540SP-E through Aetrix?

Please submit a Request for Quotation (RFQ) for VN540SP-E 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 VN540SP-E reliable?

The price and inventory of VN540SP-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for VN540SP-E is usually 5 days.

3.What payment methods are accepted for VN540SP-E?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VN540SP-E transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for VN540SP-E?

VN540SP-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your VN540SP-E 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 VN540SP-E?

For technical support, including VN540SP-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VN540SP-E requirements.

6.How does Aetrix verify that VN540SP-E is sourced from the original manufacturer or authorized distributors?

All VN540SP-E 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 VN540SP-E meets industry standards.

7.What is the process for return or replacement of VN540SP-E?

All VN540SP-E units undergo pre-shipment inspection (PSI). If there is an issue with VN540SP-E, 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 VN540SP-E part is unused and in its original packaging.

Return procedure for VN540SP-E:

1.Submit a request within 90 days.

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

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