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

STMicroelectronics VN820B5TR-E

Name: VN820B5TR-E
Brand: STMicroelectronics
SKU: VN820B5TR-E
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: VN820B5TR-E

Manufacturer:: STMicroelectronics

Category:: Power Distribution Switches, Load Drivers

Package:: P2PAK (4 Leads + Tab)

Datasheet:: VN820B5TR-E.pdf

Description:: IC PWR DRIVER N-CHAN 1:1 P2PAK

Quantity:: RFQ Add To RFQ list

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Inventory:1,043

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Product details

Overview

VN820B5TR-E from STMicroelectronics is an automotive-grade high-side driver IC designed for ground-referenced resistive, inductive, and capacitive loads in 12 V/24 V systems. It features 40 mΩ R_DS(on), 9 A continuous output current, 36 V V_CC rating, integrated open-load detection (on- and off-state), thermal shutdown with automatic restart, and reverse battery protection. It is used in body control modules for driving solenoids, relays, and lamps.

For engineers reviewing the VN820B5TR-E datasheet, VN820B5TR-E pinout, VN820B5TR-E application, or VN820B5TR-E equivalent, key selection criteria include on-state resistance stability over temperature, diagnostic status pin behavior under fault conditions, load dump immunity per ISO 7637-2 Pulse 2a/5a, and P2PAK thermal performance in constrained PCB layouts.

Technical Context

The VN820B5TR-E implements a monolithic VIPower® M0-3 high-voltage BCD process with active V_CC clamp for low-energy spike suppression and integrated current-limiting circuitry that dynamically adjusts I_LIM between 9 A and 20 A depending on V_CC and junction temperature. Its status pin provides open-drain fault reporting with programmable hysteresis via external pull-up.

It supports CMOS-compatible input logic (V_IL = 1.25 V, V_IH = 3.25 V) and delivers precise open-load detection thresholds: 70–300 mA in on-state and 1.5–3.5 V at output during off-state. Protection functions-including undervoltage lockout (4 V typ.), overvoltage shutdown (36 V), and thermal shutdown (150 °C trip)-are fully autonomous and do not require MCU intervention.

Key Specifications

Parameter	Value and Actual Design Meaning
R_DS(on)	40 mΩ max at I_OUT = 3 A, T_j = 25 °C - ensures <1.2 W conduction loss at 9 A, enabling compact thermal design
I_OUT Continuous	9 A - rated for sustained operation with P2PAK package and ≥6 cm² copper area
V_CC Range	5.5–36 V - supports wide automotive battery range 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 diagnosis without external sensing
Thermal Shutdown	150 °C trip, 135 °C reset - provides self-protecting operation with 15 °C hysteresis to prevent oscillation
Status Pin Logic	Open-drain, clamped to 6.8 V - allows direct interface to 3.3 V/5 V MCU GPIO with single pull-up resistor
ESD Rating	5 kV on V_CC/OUTPUT pins (HBM) - exceeds AEC-Q100 Class 3 requirements for harsh automotive environments

Pinout & Package

Packaged in thermally enhanced P2PAK (Power Package) with exposed drain pad for low R_thj-case (1.9 °C/W) and optimized for high-current automotive PCBs.

Pin/Terminal	Circuit Role	Design Meaning
V_CC	Positive supply input	Clamped to ≤36 V; internal Zener protects against load dump transients per ISO 7637-2 Pulse 5a
IN	Digital input control	CMOS-compatible (1.25 V low / 3.25 V high); 1 µA leakage enables direct MCU connection
OUT	High-side switched output	Drives load between OUT and GND; integrates reverse-battery diode and demagnetization clamp
STAT	Fault status output	Open-drain diagnostic pin indicating overtemperature, open-load, short-to-V_CC, or undervoltage
GND	Power and signal reference	Must be connected directly to chassis ground; disconnect detection disables output automatically

Key Features

Feature	Design Value
Automotive qualification	AEC-Q100 Grade 0 (−40 °C to +150 °C ambient), ECOPACK® RoHS-compliant
Diagnostic coverage	On- and off-state open-load detection, output stuck-at-V_CC, thermal overload, undervoltage, and overvoltage - all reported via STAT pin
Robust transient immunity	Withstands ISO 7637-2 Pulse 1 (−100 V), Pulse 2a (+100 V), Pulse 3b (+100 V), and Pulse 5a (+46.5 V) without latch-up or damage
Reverse battery protection	Integrated GND-path protection network eliminates need for external series diode or MOSFET
Current limiting	Active I_LIM of 9–20 A with fast response (<20 ms delay) prevents wire harness damage during short-circuit events

Applications

Headlamp Control

Engine Cooling Fan

Use Scenario: PWM-controlled 12 V halogen or LED headlamp module with real-time open-circuit monitoring.

IC Role / Device Role / Timing Role: High-side switch providing load isolation, current limiting, and diagnostic feedback to body controller MCU.

Use Value: Eliminates need for external current sense resistor and discrete protection diodes while meeting ECE R112 thermal derating requirements.

Use Scenario: 24 V brushed DC cooling fan in commercial vehicle engine bay with frequent thermal cycling.

IC Role / Device Role / Timing Role: Robust high-side driver with auto-restart thermal protection and load-dump immunity.

Use Value: Sustains 9 A continuous current at 125 °C case temperature with <1.9 °C/W junction-to-case resistance.

Seat Heater Activation

Transmission Solenoid Drive

Use Scenario: Safety-critical seat heater circuit requiring open-load detection before power-on and during operation.

IC Role / Device Role / Timing Role: Fault-tolerant high-side driver with dual-mode open-load detection and status pin reporting.

Use Value: Detects broken heater element (open-load) within 200 µs in on-state and 1 ms in off-state-enabling fail-safe shutdown.

Use Scenario: 12 V transmission pressure control solenoid with inductive kickback energy up to 156 mJ.

IC Role / Device Role / Timing Role: High-current switch with integrated demagnetization clamp and fast turn-off voltage slope control.

Use Value: Limits V_OUT to V_CC − 41 V during turn-off, preventing solenoid coil arcing and contact erosion.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
TPS27082LDR	Lower R_DS(on) (20 mΩ), but only 5 A rated; no off-state open-load detection; no reverse battery protection	Suitable for non-automotive 5 V–12 V industrial loads where diagnostics are handled externally	Select when cost-sensitive, lower-current, and non-AEC-Q100 applications prioritize conduction efficiency over comprehensive fault coverage
IPS1031HTR	Same 9 A rating and P2PAK package; adds SPI interface and configurable diagnostics; higher quiescent current (15 µA vs. 2 µA)	Used in next-gen ADAS domain controllers requiring programmable fault thresholds and multi-channel coordination	Select when system-level diagnostics require register-based configuration and daisy-chain communication instead of simple open-drain STAT signaling

Compared with TPS27082LDR, VN820B5TR-E delivers superior automotive robustness and autonomous diagnostics; compared with IPS1031HTR, it offers lower standby current and simpler integration for legacy MCU-based architectures without SPI support.

Availability

VN820B5TR-E is available at Aetrix Electronics and suitable for automotive body electronics, engine management subsystems, and commercial vehicle lighting systems requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for VN820B5TR-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.

VN820B5TR-E belongs to the VIPower® high-side driver product line, engineered specifically for AEC-Q100-compliant automotive load switching with integrated protection and diagnostic functions in harsh electrical environments.

FAQ

What is the maximum safe operating temperature for VN820B5TR-E?

The VN820B5TR-E has a junction temperature limit of 150 °C for thermal shutdown activation, with automatic restart at 135 °C. Its P2PAK package achieves 1.9 °C/W junction-to-case thermal resistance when mounted on ≥6 cm² of 35 µm copper, enabling continuous 9 A operation at 125 °C case temperature under defined airflow conditions.

Does VN820B5TR-E require an external flyback diode for inductive loads?

No. The VN820B5TR-E integrates an active V_CC clamp and internal demagnetization path that limits turn-off output voltage to V_CC − 41 V (typ.) during inductive energy dissipation. This eliminates the need for external flyback diodes in most automotive solenoid and relay applications compliant with ISO 7637-2 Pulse 5a.

How does the status pin indicate open-load faults?

The STAT pin pulls low for ≥200 µs when an open-load condition is detected in on-state (I_OUT < 70 mA) or off-state (V_OUT > 1.5 V). It also reports thermal shutdown, undervoltage, overvoltage, and short-to-V_CC faults using distinct timing patterns defined in the truth table (Table 12), allowing MCU firmware to distinguish fault types without additional hardware.

Can VN820B5TR-E drive loads directly from a 24 V truck battery?

Yes. The device operates across 5.5–36 V V_CC, covering full 24 V commercial vehicle battery range including cold-crank (down to 6 V) and load-dump transients (up to 36 V). Its internal clamp and protection circuits meet ISO 16750-2 and ISO 7637-2 requirements for heavy-duty vehicle applications without external TVS or regulators.

VN820B5TR-E Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Package/Case:: P2PAK (4 Leads + Tab)

Series:: -

Packaging:: Tape & Reel (TR)

Product Status:: Active

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:: P2PAK

VN820B5TR-E FAQ

1.How can I place an order for VN820B5TR-E through Aetrix?

Please submit a Request for Quotation (RFQ) for VN820B5TR-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 VN820B5TR-E reliable?

The price and inventory of VN820B5TR-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for VN820B5TR-E is usually 5 days.

3.What payment methods are accepted for VN820B5TR-E?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VN820B5TR-E transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for VN820B5TR-E?

VN820B5TR-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your VN820B5TR-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 VN820B5TR-E?

For technical support, including VN820B5TR-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VN820B5TR-E requirements.

6.How does Aetrix verify that VN820B5TR-E is sourced from the original manufacturer or authorized distributors?

All VN820B5TR-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 VN820B5TR-E meets industry standards.

7.What is the process for return or replacement of VN820B5TR-E?

All VN820B5TR-E units undergo pre-shipment inspection (PSI). If there is an issue with VN820B5TR-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 VN820B5TR-E part is unused and in its original packaging.

Return procedure for VN820B5TR-E:

1.Submit a request within 90 days.

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

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