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

STMicroelectronics VN820PT-E

Name: VN820PT-E
Brand: STMicroelectronics
SKU: VN820PT-E
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: VN820PT-E

Manufacturer:: STMicroelectronics

Category:: Power Distribution Switches, Load Drivers

Package:: TO-252-5, DPAK (4 Leads + Tab), TO-252AD

Datasheet:: VN820PT-E.pdf

Description:: IC PWR DRIVER N-CHANNEL 1:1 PPAK

Quantity:: RFQ Add To RFQ list

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Product details

Overview

VN820PT-E from STMicroelectronics is an automotive-grade high-side power switch fabricated in VIPower® M0-3 technology, designed to drive grounded loads with 40 mΩ R_DS(on), 9 A continuous output current, and 36 V V_CC rating. It integrates on/off-state open-load detection, thermal shutdown with automatic restart, reverse battery protection, and CMOS-compatible input logic - deployed in engine control modules, body electronics, and lighting systems.

For engineers reviewing the VN820PT-E datasheet, VN820PT-E pinout, VN820PT-E application, or VN820PT-E equivalent, key selection criteria include its PPAK package thermal performance (R_thj-case = 1.9 °C/W), integrated status pin diagnostics, load dump immunity per ISO 7637-2 Pulse 2/5a, and AEC-Q100 qualification for under-hood environments.

Technical Context

The VN820PT-E implements a monolithic high-side driver with active V_CC clamp for low-energy spike suppression and programmable current limitation (5.5–20 A) tied to V_CC level. Its status pin provides real-time fault reporting via open-drain output with clamp voltage (6–8 V) and leakage current ≤10 µA.

Protection architecture includes undervoltage lockout (V_USD = 4 V ±0.5 V hysteresis), overvoltage shutdown at 36 V, thermal shutdown at 150–200 °C with 135 °C reset, and output stuck-to-V_CC detection. Off-state open-load sensing operates at V_OUT ≥2.5 V threshold with 1 ms delay.

Key Specifications

Parameter	Value and Actual Design Meaning
R_DS(on)	40 mΩ max at I_OUT = 3 A, T_j = 25 °C - enables <1 W conduction loss at 9 A, reducing heatsink requirements
I_OUT Continuous	9 A - supports high-current solenoids, fuel injectors, and HVAC actuators without external current sharing
V_CC Range	5.5–36 V - compatible with 12 V and 24 V automotive battery systems including cold-crank (5.5 V) and load-dump (36 V)
Open-Load Detection	On-state: 70–300 mA threshold; Off-state: 1.5–3.5 V threshold - enables reliable fault isolation without external sense resistors
Thermal Shutdown	Activates at 150–200 °C junction temperature with 135 °C hysteresis - prevents permanent damage during sustained overload
Status Pin Output	Open-drain with 0.5 V low-level voltage at 1.6 mA sink - directly interfaces with 3.3 V/5 V MCU GPIO for diagnostic polling
ISO 7637-2 Compliance	Pulse 1 (−100 V), Pulse 2a (+100 V), Pulse 3b (+100 V), Pulse 5a (+46.5 V) - meets OEM EMC requirements for powertrain and chassis modules

Pinout & Package

Package: PPAK (Power Plastic Package), surface-mount, thermally enhanced with exposed drain pad for direct PCB copper connection. Thermal resistance R_thj-case = 1.9 °C/W enables high-power operation without heatsink in constrained spaces.

Pin/Terminal	Circuit Role	Design Meaning
V_IN	CMOS-compatible digital input	Accepts 1.25 V low / 3.25 V high logic; 0.5 V hysteresis prevents noise-induced switching
V_OUT	High-side switched output	Drives load between this pin and ground; supports inductive demagnetization energy up to 156 mJ
V_CC	Main supply input	36 V rated; internal clamp diode limits transients to ≤V_CC − 41 V during turn-off
GND	Power and signal reference	Reverse battery protection activates if GND is disconnected - prevents latch-up during jump-start scenarios
STATUS	Diagnostic open-drain output	Asserts low on thermal shutdown, overcurrent, undervoltage, overvoltage, or open-load faults; 100 pF capacitance limits EMI

Key Features

Feature	Design Value
Automotive Grade Qualification	AEC-Q100 qualified for Grade 1 (−40 to +125 °C ambient) and Grade 0 (−40 to +150 °C junction), enabling under-hood deployment
Integrated Reverse Battery Protection	Operates safely with battery polarity reversal up to −14 V without external diode or fuse - reduces BOM count and PCB area
Active Current Limitation	Adjustable 5.5–20 A limit based on V_CC; avoids destructive short-circuit currents while maintaining system responsiveness
Two-Mode Open-Load Detection	Detects open circuits both when output is ON (via current threshold) and OFF (via voltage threshold), eliminating need for separate monitoring circuitry
Low Standby Current	≤10 µA at V_CC = 13 V, V_IN = 0 V - meets automotive "always-on" module quiescent current budgets (<50 µA)

Applications

Engine Control Unit (ECU)

Body Control Module (BCM)

Use Scenario: Driving fuel injectors and ignition coils in gasoline/diesel powertrains with variable battery voltage and high EMI.

IC Role / Device Role / Timing Role: High-side switch providing precise ON/OFF timing control with fast turn-on/turn-off delays (≤30 µs) and inductive energy clamping.

Use Value: Eliminates need for external flyback diodes and current-sense amplifiers while supporting ISO 7637-2 Pulse 5a load-dump immunity up to +46.5 V.

Use Scenario: Controlling door locks, window lift motors, and interior lighting in centralized body electronics architectures.

IC Role / Device Role / Timing Role: Fault-tolerant power distribution node with diagnostic feedback via STATUS pin for predictive maintenance and error logging.

Use Value: Reduces wiring harness complexity by replacing relays and discrete protection components; enables open-load detection without added sensors.

Advanced Driver Assistance Systems (ADAS)

Electric Power Steering (EPS)

Use Scenario: Powering radar cooling fans, camera focus actuators, and sensor bias supplies in safety-critical ADAS domains.

IC Role / Device Role / Timing Role: Safety-relevant high-side driver with thermal shutdown, undervoltage lockout, and diagnostic reporting compliant with ASIL-B functional safety requirements.

Use Value: Provides single-point failure detection (e.g., output stuck high/low, overtemperature) traceable via STATUS pin, simplifying FMEDA analysis.

Use Scenario: Driving EPS motor phase drivers and hydraulic pump solenoids requiring robust transient immunity and precise current limiting.

IC Role / Device Role / Timing Role: High-reliability power switch with reverse battery tolerance and active current foldback to prevent MOSFET destruction during motor stall.

Use Value: Withstands jump-start conditions (−14 V) and load dumps (+46.5 V) without external protection, improving system MTBF.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
VN820B5-E	P2PAK package; identical electrical specs but higher R_thj-amb (76.9 °C/W vs 45 °C/W for PPAK); no integrated reverse battery protection	Suitable for non-automotive industrial loads where PCB space allows larger footprint and reverse polarity risk is mitigated externally	Select when thermal budget permits larger package and external reverse-battery diode is acceptable
TPS4H160-Q1	Texas Instruments device; 160 mΩ R_DS(on), 2.5 A rating, SPI interface, built-in watchdog timer - lower current capability but richer diagnostics	Better suited for distributed low-power nodes requiring multi-channel control and fault logging over serial bus	Choose when system requires daisy-chain configuration, configurable fault response, or ASIL-D support via external MCU coordination

Compared with VN820B5-E, the VN820PT-E offers superior thermal performance and integrated reverse-battery protection in a smaller PPAK footprint; versus TPS4H160-Q1, it delivers higher current density and simpler GPIO-based control at the cost of advanced communication features.

Availability

VN820PT-E is available at Aetrix Electronics and suitable for engine control units, body control modules, ADAS subsystems, and electric power steering systems requiring stable component supply across automotive production lifecycles.

Supply support for VN820PT-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 ICs with vertical manufacturing capabilities and AEC-Q100 validation infrastructure.

The VN820 series belongs to ST's VIPower® high-side driver product line, engineered specifically for automotive power distribution with integrated protection, diagnostics, and thermal resilience in harsh under-hood environments.

FAQ

What is the maximum inductive load energy the VN820PT-E can safely demagnetize?

The VN820PT-E supports up to 156 mJ of demagnetization energy at V_CC = 13.5 V, L = 1.4 mH, and I_L = 13 A. This value is validated per ST's test conditions in the datasheet and assumes proper PCB copper area (≥6 cm²) for thermal dissipation. Exceeding this energy risks triggering thermal shutdown or damaging the internal clamp structure.

How does the STATUS pin indicate an off-state open-load condition?

The STATUS pin pulls low when the off-state open-load voltage threshold (1.5–3.5 V) is exceeded at V_OUT, with a typical detection delay of 1000 µs. This occurs when the load is disconnected while the driver is inactive, allowing V_OUT to float toward V_CC through leakage paths. The pin remains asserted until the condition clears and the internal diagnostic timer expires.

Can the VN820PT-E be used in 24 V commercial vehicle applications?

Yes - the VN820PT-E supports V_CC up to 36 V and is qualified for automotive Grade 0 (−40 to +150 °C junction), making it suitable for 24 V trucks and buses. Its ISO 7637-2 Pulse 5a immunity (+46.5 V) exceeds typical 24 V system load-dump requirements, and reverse battery protection handles −14 V polarity reversal common during service.

Is external current sensing required for overload protection?

No - the VN820PT-E incorporates active current limitation (5.5–20 A range) and thermal shutdown with automatic restart. These functions operate independently of external components. The STATUS pin reports overcurrent events, and the internal foldback mechanism prevents destructive currents without needing shunt resistors or op-amp circuits.

VN820PT-E Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Package/Case:: TO-252-5, DPAK (4 Leads + Tab), TO-252AD

Series:: -

Packaging:: Tube

Product Status:: Obsolete

Switch Type:: General Purpose

Number of Outputs:: 1

Ratio - Input:Output:: 1:1

Output Configuration:: High Side

Output Type:: N-Channel

Interface:: On/Off

Voltage - Load:: 5.5V ~ 36V

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

Current - Output (Max):: 9A

Rds On (Typ):: 40mOhm (Max)

Input Type:: Non-Inverting

Features:: Auto Restart, Status Flag

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

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: PPAK

VN820PT-E FAQ

1.How can I place an order for VN820PT-E through Aetrix?

Please submit a Request for Quotation (RFQ) for VN820PT-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 VN820PT-E reliable?

The price and inventory of VN820PT-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for VN820PT-E is usually 5 days.

3.What payment methods are accepted for VN820PT-E?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VN820PT-E transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for VN820PT-E?

VN820PT-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your VN820PT-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 VN820PT-E?

For technical support, including VN820PT-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VN820PT-E requirements.

6.How does Aetrix verify that VN820PT-E is sourced from the original manufacturer or authorized distributors?

All VN820PT-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 VN820PT-E meets industry standards.

7.What is the process for return or replacement of VN820PT-E?

All VN820PT-E units undergo pre-shipment inspection (PSI). If there is an issue with VN820PT-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 VN820PT-E part is unused and in its original packaging.

Return procedure for VN820PT-E:

1.Submit a request within 90 days.

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

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