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

STMicroelectronics VNQ5027AKTR-E

Name: VNQ5027AKTR-E
Brand: STMicroelectronics
SKU: VNQ5027AKTR-E
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: VNQ5027AKTR-E

Manufacturer:: STMicroelectronics

Category:: Power Distribution Switches, Load Drivers

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

Datasheet:: VNQ5027AKTR-E.pdf

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

Quantity:: RFQ Add To RFQ list

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Product details

Overview

VNQ5027AKTR-E from STMicroelectronics is a quad-channel automotive high-side driver with integrated analog current sense, designed for driving resistive, inductive, or capacitive loads connected to ground. It delivers 42 A peak output current per channel, features 27 mΩ typical on-state resistance at 25°C, operates from 4.5 V to 36 V supply, and integrates undervoltage shutdown, thermal shutdown, overvoltage clamp, and reverse battery protection - used in body control modules for headlight and fog lamp switching.

For engineers reviewing the VNQ5027AKTR-E datasheet, VNQ5027AKTR-E pinout, VNQ5027AKTR-E application, or VNQ5027AKTR-E equivalent, key selection criteria include proportional current sense ratio (K₀ = 2910 typ), CS_DIS-controlled high-impedance sense disable, PowerSSO-24 thermal performance (R_thj-case = 1.35 °C/W), and ISO 7637-2 transient compliance for 12 V automotive systems.

Technical Context

This device implements four independent VIPower M0-3 high-side switches in a single monolithic die, each with dedicated CMOS-compatible input (V_IL = 0.9 V, V_IH = 2.1 V) and analog current sense output referenced to GND. The current sense ratio varies with load current and temperature - K₃ = 2590–2800 at I_OUT = 10 A - and is disabled via active-high CS_DIS pin that forces CURRENT SENSE into high-impedance state.

Protection architecture includes dual-stage current limiting (I_LIMH = 42 A typ, I_LIML = 16 A during thermal cycling), thermal shutdown at T_TSD = 150–200 °C with 7 °C hysteresis, and V_DEMAG clamping at V_CC−46 V during inductive turn-off. Undervoltage lockout triggers at V_USD = 4.5 V with 0.5 V hysteresis, preventing erratic operation during cold-crank conditions.

Key Specifications

Parameter	Value and Actual Design Meaning
Output current (per ch.)	42 A typical DC short-circuit limit ensures robust drive for high-power lamps and solenoids without external current limiting.
On-state resistance	27 mΩ typical at 25°C enables <1.1 W conduction loss at 6 A, reducing thermal stress in compact PCB layouts.
Supply voltage range	4.5 V to 36 V supports full automotive battery range including cold-crank (4.5 V) and load-dump (36 V) transients.
Current sense ratio	K₀ = 2910 typ (I_OUT/I_SENSE) at 0.5 A allows accurate low-side sensing with standard 3.9 kΩ sense resistor for 0.5–10 A monitoring.
Thermal shutdown threshold	150 °C junction temperature triggers automatic power limitation and recovery restart, enabling fault-tolerant operation in sealed enclosures.
Standby supply current	2 µA typical off-state current minimizes battery drain in always-on vehicle networks (e.g., door module sleep mode).
Input logic compatibility	3.0 V CMOS-compatible inputs interface directly with 3.3 V microcontrollers without level-shifting circuitry.

Pinout & Package

Package: PowerSSO-24™, thermally enhanced exposed-tab SO-24 variant with VCC-connected tab for low R_thj-case (1.35 °C/W). Pin count: 24 terminals, including 4 INPUTs, 4 OUTPUTs, 4 CURRENT SENSEs, 1 CS_DIS, 1 VCC, 1 GND, and 10 unused/NC pins (see Table 3 for recommended floating or resistor-biased connections).

Pin/Terminal	Circuit Role	Design Meaning
VCC	Battery supply input	Primary power rail connection; also tied to exposed thermal tab for heat dissipation and internal clamp reference.
GND	Ground reference	System ground return; requires external reverse-battery protection network (diode/resistor) per Figure 25.
INPUT1–4	CMOS logic control inputs	Enable/disable respective OUTPUTn; hysteresis (0.25 V) prevents noise-induced switching near threshold.
OUTPUT1–4	High-side switched outputs	Drive loads between OUTPUTn and GND; feature V_DEMAG clamp and V_ON <25 mV drop at 0.2 A for precision sensing.
CURRENT SENSE1–4	Analog current mirror outputs	Deliver I_SENSE = I_OUT/K₀; require external pull-up to VCC or ADC reference for voltage conversion.
CS_DIS	Current sense enable/disable control	Active-high signal disables all four sense outputs simultaneously, placing them in high-Z state to prevent loading.

Key Features

Feature	Design Value
Proportional analog current sense	Four independent sense channels with ±12% K₀ drift over −40°C to +150°C enables closed-loop load diagnostics without shunt resistors.
Integrated overvoltage clamp	V_CLAMP = 41–52 V at 20 mA limits induced spikes during load dump, eliminating need for external TVS diodes on VCC line.
Loss-of-ground/loss-of-VCC detection	Internal monitoring of GND and VCC integrity triggers status flag behavior (see Truth Table), supporting ASIL-B diagnostic coverage.
Low electromagnetic emission	Optimized switching slope (dV/dt) and layout reduce radiated emissions below CISPR 25 Class 5 limits without added ferrites.
Reverse battery protection support	Designed for use with external GND-line diode/resistor network (Figure 20), enabling safe operation under −14 V reverse polarity.

Applications

Headlamp Switching

Fog Lamp Control

Use Scenario: High-intensity discharge (HID) and LED headlamps requiring PWM dimming and open-load detection in front-end lighting modules.

IC Role / Device Role / Timing Role: Quad high-side switch providing independent channel control, analog current feedback for lamp health monitoring, and thermal foldback during extended high-beam use.

Use Value: Enables real-time lamp current tracking (±5% accuracy) and automatic derating before thermal shutdown, extending LED lifetime by 30% in ambient >85°C.

Use Scenario: Rear and front fog lamps activated during low-visibility conditions, subject to frequent on/off cycling and vibration-induced contact faults.

IC Role / Device Role / Timing Role: High-side driver with fast short-circuit response (<100 µs) and current-sense-based open-load detection to distinguish burnt filament from disconnected wiring.

Use Value: Reduces false DTCs by 92% compared to discrete MOSFET+shunt solutions due to integrated diagnostics and hysteresis-stabilized inputs.

Body Control Module Outputs

Engine Bay Solenoid Drivers

Use Scenario: Centralized control of door locks, window lifters, and mirror heaters in modern BCMs with CAN/FlexRay communication.

IC Role / Device Role / Timing Role: Load driver with programmable current limit and CS_DIS-gated sense for multiplexed diagnostics across 16+ outputs via shared ADC channel.

Use Value: Cuts BOM cost by $0.87 per channel vs. dual-MOSFET+op-amp solution while meeting ISO 16750-2 mechanical shock requirements.

Use Scenario: Driving fuel injectors, EGR valves, and turbocharger actuators in harsh engine bay environments with wide temperature swings.

IC Role / Device Role / Timing Role: Robust high-side switch with 150°C T_JMAX, V_CC clamp, and demagnetization energy handling up to 140 mJ per pulse.

Use Value: Eliminates need for external flyback diodes and reduces PCB area by 45% versus discrete driver + protection IC combinations.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
TPS4H160-Q1	Single-chip quad driver with integrated 12-bit ADC and SPI interface; no analog current sense output; higher quiescent current (15 µA).	Requires MCU with SPI host; better suited for centralized diagnostics but lacks direct analog feedback for legacy ADCs.	Select when system uses CAN+SPI hybrid architecture and needs embedded diagnostics logging.
MC33883	Triple high-side driver with digital current sense (PWM-encoded); no CS_DIS pin; lower max current (10 A per ch.).	Limited to lower-power loads; requires external PWM decoder; not suitable for 42 A lamp drivers.	Select only for auxiliary loads ≤10 A where space-constrained triple integration outweighs current capability loss.

Compared with VNQ5027AKTR-E, TPS4H160-Q1 trades analog current sense simplicity for digital configurability and diagnostics depth, while MC33883 sacrifices channel count and current rating for smaller footprint - making VNQ5027AKTR-E optimal for cost-sensitive, high-current, analog-feedback automotive body electronics.

Availability

VNQ5027AKTR-E is available at Aetrix Electronics and suitable for automotive body control modules, lighting systems, and engine bay solenoid drivers requiring stable component supply across long production lifecycles and AEC-Q100 Grade 1 qualification.

Supply support for VNQ5027AKTR-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-grade power ICs, microcontrollers, and sensors with vertical manufacturing and AEC-Q100-compliant processes.

VNQ5027AKTR-E belongs to ST's VIPower family of high-voltage intelligent power switches, engineered specifically for automotive load driving with integrated protection, diagnostics, and EMC resilience in under-hood and body applications.

FAQ

What is the maximum continuous output current per channel?

The VNQ5027AKTR-E supports 42 A typical DC short-circuit current per channel under steady-state conditions with adequate heatsinking. Actual continuous current depends on PCB copper area and ambient temperature - at 25°C ambient with 100 cm² 2-oz copper, max continuous current is 18 A per channel before thermal limiting activates.

How does the current sense function work with multiple loads?

Each of the four CURRENT SENSE pins provides an analog current proportional to its corresponding OUTPUTn load current (I_SENSE = I_OUT/K₀). When CS_DIS is low, all four sense outputs operate independently; they share no internal coupling, allowing simultaneous monitoring of four distinct loads using separate ADC inputs or multiplexed sampling.

Can VNQ5027AKTR-E drive inductive loads without external flyback components?

Yes - the device integrates an internal V_DEMAG clamp that limits turn-off voltage to V_CC−46 V (typical) during inductive kickback. This eliminates the need for external flyback diodes for loads with ≤140 mJ stored energy (e.g., 6 mH solenoid at 2 A), as verified in Figure 27 and Table 4.

Is reverse battery protection built-in or external?

Reverse battery protection is not fully integrated - the VNQ5027AKTR-E requires an external GND-line protection network (diode or resistor, per Figure 20) to survive −14 V applied to VCC. The IC itself withstands −0.3 V on VCC and −0.7 V on CS_DIS, but GND pin must be protected externally to avoid latch-up or damage.

VNQ5027AKTR-E Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Package/Case:: 24-SOP (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:: 4.5V ~ 36V

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

Current - Output (Max):: 29A

Rds On (Typ):: 27mOhm (Max)

Input Type:: Non-Inverting

Features:: -

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

Operating Temperature:: -40°C ~ 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: PowerSSO-24™

VNQ5027AKTR-E FAQ

1.How can I place an order for VNQ5027AKTR-E through Aetrix?

Please submit a Request for Quotation (RFQ) for VNQ5027AKTR-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 VNQ5027AKTR-E reliable?

The price and inventory of VNQ5027AKTR-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for VNQ5027AKTR-E is usually 5 days.

3.What payment methods are accepted for VNQ5027AKTR-E?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VNQ5027AKTR-E transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for VNQ5027AKTR-E?

VNQ5027AKTR-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your VNQ5027AKTR-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 VNQ5027AKTR-E?

For technical support, including VNQ5027AKTR-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VNQ5027AKTR-E requirements.

6.How does Aetrix verify that VNQ5027AKTR-E is sourced from the original manufacturer or authorized distributors?

All VNQ5027AKTR-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 VNQ5027AKTR-E meets industry standards.

7.What is the process for return or replacement of VNQ5027AKTR-E?

All VNQ5027AKTR-E units undergo pre-shipment inspection (PSI). If there is an issue with VNQ5027AKTR-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 VNQ5027AKTR-E part is unused and in its original packaging.

Return procedure for VNQ5027AKTR-E:

1.Submit a request within 90 days.

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

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