Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

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

STMicroelectronics VB027(6)

Name: VB027(6)
Brand: STMicroelectronics
SKU: VB027(6)
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: VB027(6)

Manufacturer:: STMicroelectronics

Category:: Power Distribution Switches, Load Drivers

Package:: Pentawatt-5 HV (Bent and Staggered Leads)

Datasheet:: VB027(6).pdf

Description:: IC PWR DRVR BIPOLAR 5PENTAWATTHV

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:1,479

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

VB027(6) from STMicroelectronics is a high-voltage ignition coil driver power IC built on VIPower™ technology, integrating a vertical current flow power Darlington with logic-level input compatibility. It features internally set primary coil voltage clamping (300–400 V), collector current limiting (8–9 A), and dual diagnostic flag outputs for overcurrent detection at 4.5 A and 5.8 A thresholds - used in automotive electronic ignition systems.

For engineers reviewing the VB027(6) datasheet, VB027(6) pinout, VB027(6) application, or VB027(6) equivalent, key selection criteria include its HVC output capability, quasi-proportional base drive, thermal derating behavior, dual-threshold diagnostic signaling, and PENTAWATT HV package mechanical compatibility.

Technical Context

The VB027(6) operates as a smart high-side switch for automotive ignition coils, using internal Rsense-based current sensing and Zener-clamped HVC output to limit primary coil voltage to ~360 V typical. Its driver stage accepts 4–5.5 V logic input and supplies up to 130 mA during conduction.

Two independent diagnostic flags respond to collector current crossing 4.5 A (first threshold) and 5.8 A (second threshold), with temperature-compensated trip points and sub-microsecond response times (td(diag) = 1 µs). Overtemperature detection shifts the first flag threshold downward by ~1 A above 125 °C junction temperature.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CL (min)	300 V - Minimum guaranteed clamp voltage protects ignition coil from destructive flyback spikes
I_CL (max)	9 A - Maximum sustained collector current before active current limiting engages
V_d	4.5–5.5 V - Required supply voltage for internal driver stage; defines logic interface compatibility
I_DIAG1	4.25–4.75 A - First diagnostic flag activation threshold; enables early overcurrent warning
I_DIAG2	5.45–6.15 A - Second diagnostic flag activation threshold; triggers immediate shutdown command
t_d(off)	25 µs - Turn-off delay ensures precise dwell time control in microcontroller-based ignition timing
R_thj-case	1.12 °C/W - Junction-to-case thermal resistance supports direct heatsink mounting for high-power operation

Pinout & Package

VB027(6) is housed in the PENTAWATT HV package - a 5-pin, single-in-line (SIL) power package with isolated tab, optimized for high-voltage automotive switching and thermal dissipation. The exposed metal tab is electrically connected to Pin 1 (GND).

Pin/Terminal	Circuit Role	Design Meaning
1 GND	Emitter power ground	Power return path for Darlington emitter and thermal reference for heatsink mounting
2 V_d	Driving stage supply	Provides regulated 5 V supply to internal logic/driver circuitry; decoupling required
3 HVC	Primary coil output	High-voltage collector output terminal; clamped internally to 360 V typical during flyback
4 INPUT	Logic input channel	TTL/CMOS-compatible input (V_INH ≥ 4 V); controls Darlington conduction state
5 DIAG	Diagnostic output signal	Open-collector output indicating first/second current threshold crossings via voltage level

Key Features

Feature	Design Value
Dual-threshold diagnostic flag	Enables staged overcurrent response: warning at 4.5 A, shutdown trigger at 5.8 A - reduces false trips while ensuring protection
Internally clamped HVC output	360 V typical clamp eliminates need for external snubber diodes in ignition coil interface
Quasi-proportional base drive	Base current scales with collector current - improves efficiency and thermal stability under varying load conditions
Overtemperature detection	Shifts first diagnostic threshold down ~1 A above 125 °C - provides early thermal warning without full shutdown
Transient surge immunity	Withstands -100 V / 2 ms and +100 V / 0.2 ms battery line transients - meets automotive ISO 7637-2 requirements

Applications

Gasoline Engine Ignition Control

Distributorless Ignition System (DIS)

Use Scenario: Microcontroller-controlled dwell time and spark timing in 4–8 cylinder port fuel injection engines.

IC Role / Device Role / Timing Role: High-side power switch driving primary winding of ignition coil; provides real-time current feedback via dual diagnostic flags.

Use Value: Enables precise energy delivery per spark event (I²t control), reducing misfire rate and improving combustion efficiency.

Use Scenario: Coil-on-plug (COP) or waste-spark configurations eliminating mechanical distributor.

IC Role / Device Role / Timing Role: Direct coil driver with integrated diagnostics - replaces discrete Darlington + protection components.

Use Value: Reduces BOM count by 4+ components per channel and improves system reliability through embedded fault reporting.

Motorcycle Ignition Module

Small Engine ECU (Lawnmowers, Generators)

Use Scenario: Compact, oil-cooled ignition modules for 1–3 cylinder two-stroke and four-stroke motorcycles.

IC Role / Device Role / Timing Role: Primary-side switch with thermal-aware current limiting and fast diagnostic response.

Use Value: Supports high-RPM operation (>12,000 rpm) with stable dwell control and overtemperature margining.

Use Scenario: Cost-sensitive, low-pin-count ECUs for off-road and industrial small engines.

IC Role / Device Role / Timing Role: Single-chip ignition driver with minimal external components - no external current sense or clamp needed.

Use Value: Eliminates design complexity of discrete high-voltage switching while maintaining ASIL-B compatible diagnostics.

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-voltage ignition coil driver applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
STGD3HF60	600 V, 3 A IGBT with separate gate driver; no integrated diagnostics or current limiting	Requires external current sense, comparator, and protection logic - higher design effort	Preferred when higher voltage margin (>400 V) or lower conduction loss at <3 A is critical
UC2907DW	Analog PWM controller with external MOSFET drive; no integrated power stage or HVC clamp	Needs external high-voltage switch and snubber; lacks dual-threshold diagnostic outputs	Suitable for custom-tuned ignition waveforms where programmable dwell and variable clamp are required

Compared with STGD3HF60 and UC2907DW, VB027(6) delivers turnkey ignition drive with embedded protection, dual diagnostics, and thermal awareness - reducing validation time and component count in production ECUs targeting gasoline engine platforms.

Availability

VB027(6) is available at Aetrix Electronics and suitable for gasoline engine control units, distributorless ignition systems, motorcycle ignition modules, and small-engine electronic control applications requiring stable component supply across extended automotive temperature ranges.

Supply support for VB027(6) 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, designing and manufacturing analog, digital, and mixed-signal ICs for automotive, industrial, and consumer markets.

VB027(6) belongs to ST's VIPower™ family of intelligent power ICs - engineered specifically for robust, high-voltage automotive actuation including ignition, fuel injection, and solenoid control.

FAQ

What is the function of the DIAG pin on VB027(6)?

The DIAG pin is an open-collector diagnostic output that signals collector current thresholds: high when I_C exceeds 4.5 A (first flag), low when I_C exceeds 5.8 A (second flag). It requires a 22 kΩ pull-up resistor to V_d and responds within 1 µs, enabling real-time microcontroller intervention before thermal runaway.

Can VB027(6) drive multiple ignition coils simultaneously?

No - VB027(6) is a single-channel high-side driver rated for one ignition coil primary winding. Driving multiple coils would exceed its 9 A I_CL limit and violate thermal design margins. Multi-coil systems require one VB027(6) per coil or a multi-channel alternative like L9369-TR.

Is external clamping required on the HVC pin?

No - the HVC pin features internal Zener-based voltage clamping with a typical value of 360 V. This eliminates the need for external TVS diodes or RC snubbers in standard 12 V automotive ignition designs, though layout parasitics must be minimized to avoid overshoot beyond the 20 V allowed tolerance.

How does overtemperature detection affect diagnostic behavior?

Above 125 °C junction temperature, the first diagnostic threshold (I_DIAG1) shifts downward by approximately 1 A - from 4.5 A to ~3.5 A - providing early thermal warning. This shift is not a shutdown mechanism but enables predictive current derating in firmware, preserving functionality while preventing thermal damage.

VB027(6) Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Package/Case:: Pentawatt-5 HV (Bent and Staggered Leads)

Series:: VIPower™

Packaging:: Tube

Product Status:: Obsolete

Switch Type:: General Purpose

Number of Outputs:: 1

Ratio - Input:Output:: 1:1

Output Configuration:: Low Side

Output Type:: Bipolar

Interface:: Parallel

Voltage - Load:: 4.5V ~ 5.5V

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

Current - Output (Max):: -

Rds On (Typ):: -

Input Type:: Non-Inverting

Features:: Status Flag

Fault Protection:: Over Temperature

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

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: 5-PENTAWATT HV

VB027(6) FAQ

1.How can I place an order for VB027(6) through Aetrix?

Please submit a Request for Quotation (RFQ) for VB027(6) 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 VB027(6) reliable?

The price and inventory of VB027(6) are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for VB027(6) is usually 5 days.

3.What payment methods are accepted for VB027(6)?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VB027(6) transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for VB027(6)?

VB027(6) orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your VB027(6) 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 VB027(6)?

For technical support, including VB027(6) datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VB027(6) requirements.

6.How does Aetrix verify that VB027(6) is sourced from the original manufacturer or authorized distributors?

All VB027(6) 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 VB027(6) meets industry standards.

7.What is the process for return or replacement of VB027(6)?

All VB027(6) units undergo pre-shipment inspection (PSI). If there is an issue with VB027(6), 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 VB027(6) part is unused and in its original packaging.

Return procedure for VB027(6):

1.Submit a request within 90 days.

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

Tech Hub

2026-08-18 Operational Amplifier (Op Amp): Basics, Configurations, Feedback and Applications

Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…

2026-08-14 Jumper Cables: How to Use, Connect and Choose Them Safely

Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…

2026-08-11 LDO Regulator: Dropout Voltage, Noise, PSRR and Power Dissipation

LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…

2026-08-06 Conditional Access Module: CAM, CI/CI+ and DVB Security

Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…

2026-08-03 Electronic Component Obsolescence: EOL Risks, Replacement Options and Last-Time Buy Strategy

Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.

2026-07-29 18650 Battery: Voltage, Capacity, Charging and Pack Design

18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…

2026-07-27 Hall Effect Sensor: Working Principle, Types, Circuits and Applications

Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…

2026-07-20 Product Change Notification (PCN) in Electronic Components: Meaning and Supply Chain Response

Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…

2026-07-19 Blend Door Actuator: Symptoms, Location, Reset and Replacement Guide

A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…

2026-07-17 Raspberry Pi Alternatives: Chip-Level Comparison, Compatibility and Replacement Guide

Engineering guide to Raspberry Pi alternatives, covering chip-level differences, Orange Pi, ROCK, Jetson, Banana Pi, NanoPi, Compute Module, Pico, GPIO, camera, HAT compatibility, and replacement risks…