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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Full Half-Bridge (H Bridge) Drivers

STMicroelectronics VN770K-E

Name: VN770K-E
Brand: STMicroelectronics
SKU: VN770K-E
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: VN770K-E

Manufacturer:: STMicroelectronics

Category:: Full Half-Bridge (H Bridge) Drivers

Package:: 28-SOIC (0.295", 7.50mm Width)

Datasheet:: VN770K-E.pdf

Description:: IC HALF BRIDGE DRIVER 9A 28SO

Quantity:: RFQ Add To RFQ list

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Product details

Overview

VN770K-E from STMicroelectronics is a quad-channel smart power solid-state relay integrating two VIPower™ M0-3 high-side switches and two OMNIFET II low-side switches in a single SO-28 package, designed for complete H-bridge DC motor control with linear current limitation (8 A typ), 220 mΩ total R_DS(on) per bridge leg, and integrated open-load/over-temperature diagnostics. It enables compact, protected bidirectional motor drive in automotive body electronics and industrial actuators.

For engineers reviewing the VN770K-E datasheet, VN770K-E pinout, VN770K-E application, or VN770K-E equivalent, this page delivers verified pin functions, real-world diagnostic timing (e.g., 200 µs open-load on-state detection), thermal shutdown thresholds (150–200 °C), and validated alternatives for H-bridge replacement or redundancy design.

Technical Context

The VN770K-E implements a monolithic three-chip architecture: dual high-side switches with thermal shutdown and linear current limiting, plus two fully auto-protected low-side OMNIFET II MOSFETs featuring overvoltage clamping (V_CC−41 V) and thermal hysteresis (7–15 °C). All channels share a common 36 V absolute max V_CC rating and operate across −40 to +150 °C case temperature.

Diagnostic functionality is implemented via an open-drain status flag (pin 8) reporting open-load in both on/off states and over-temperature intervention, with fault feedback detectable at input pins through voltage monitoring. Protection logic includes undervoltage shutdown (4 V typ), overvoltage shutdown (36 V), and ESD robustness (4 kV HBM on inputs/status, 5 kV on outputs/V_CC).

Key Specifications

Parameter	Value and Actual Design Meaning
V_CC Range	5.5 V to 36 V - supports 12 V automotive and 24 V industrial supply rails without external regulation
R_DS(on) (per bridge leg)	220 mΩ - enables ≤9 A continuous output current with <1.5 W conduction loss at 7 A
Current Limit (I_LIM)	8 A typical at T_j = 125 °C - linear foldback prevents thermal runaway during short-circuit events
Open-Load Detection	20–80 mA threshold (on-state), 1.5–3.5 V threshold (off-state) - enables reliable load presence verification without external sensing
Thermal Shutdown	150 °C trip, 135 °C reset - provides safe recovery after overload with 15 °C hysteresis
Status Pin Output	Open-drain, 0.5 V max low-level voltage at 1.6 mA - directly interfaces with 3.3 V/5 V microcontroller GPIO with pull-up
ESD Rating	4 kV HBM on inputs/status, 5 kV on outputs/V_CC - meets ISO 10605 requirements for automotive module integration

Pinout & Package

Package: SO-28 (Small Outline, 28-pin, 300 mil width), surface-mount, thermally enhanced layout with exposed pad not present - thermal resistance junction-to-case is 20 °C/W for both high-side and low-side dies.

Pin/Terminal	Circuit Role	Design Meaning
1, 3, 25, 28	DRAIN 3	Power output terminal of low-side switch 3 - connects to motor winding or load return path
2	INPUT 3	Logic-level gate control for low-side switch 3 - compatible with 3.3 V/5 V CMOS drivers
5, 10, 19, 24	V_CC	High-side power supply and drain connection for switches 1 & 2 - must be decoupled near package
6	GND	Reference ground for high-side switches 1 & 2 - separate from low-side source terminals to avoid crosstalk
7, 9	INPUT 1 / INPUT 2	Independent enable inputs for high-side switches 1 & 2 - support independent half-bridge control
8	DIAGNOSTIC	Shared open-drain status output - asserts low on open-load (on/off), over-temperature, or undervoltage
12, 14, 15, 18	DRAIN 4	Power output terminal of low-side switch 4 - complements DRAIN 3 for full H-bridge configuration
13	INPUT 4	Logic-level gate control for low-side switch 4 - synchronized switching with INPUT 3 enables PWM control
16, 17, 20, 21, 22, 23, 26, 27	SOURCE x	Source terminals for all four switches - routed separately to minimize ground bounce and enable current sensing
4, 11	N.C.	No-connect pins - must remain unconnected per datasheet; no internal bonding or function

Key Features

Feature	Design Value
Integrated H-bridge driver core	Two VIPower™ high-side + two OMNIFET II low-side switches co-packaged in SO-28 - eliminates discrete gate-driver + MOSFET layout complexity
Linear current limitation	8 A typical foldback limit with temperature compensation - sustains controlled operation during stall or short without latch-off
Real-time diagnostics	Single-pin open-drain status reporting open-load (both states), over-temperature, and undervoltage - reduces MCU GPIO count and firmware overhead
Robust protection suite	Clamped V_DS (45 V typ), undervoltage lockout (4 V), overvoltage shutdown (36 V), and 150 °C thermal shutdown - enables drop-in reliability in harsh environments
Low standby power	12 µA max supply current in off-state at 13 V - suitable for always-on vehicle modules with strict quiescent current budgets

Applications

Automotive Power Window Control

Industrial Linear Actuator Driver

Use Scenario: Bidirectional DC motor driving for window lift/lower with anti-pinch detection and position feedback.

IC Role / Device Role / Timing Role: Quad-channel H-bridge controller managing direction, PWM speed, and real-time fault reporting via DIAGNOSTIC pin.

Use Value: Eliminates need for external current sense amplifiers and discrete protection ICs while enabling <200 µs open-load detection for immediate stall response.

Use Scenario: Precision positioning of valve or damper using brushed DC motor with feedback loop and safety interlocks.

IC Role / Device Role / Timing Role: Smart power switch providing controlled torque, thermal margin monitoring, and open-circuit load validation before actuation.

Use Value: Linear current limiting maintains smooth motion under variable load; 15 °C thermal hysteresis prevents nuisance shutdown during transient overloads.

Medical Infusion Pump Motor Drive

Commercial HVAC Fan Controller

Use Scenario: Silent, low-EMI motor control for syringe advancement with fail-safe stop and tube occlusion detection.

IC Role / Device Role / Timing Role: Safety-critical H-bridge with diagnostic flag tied to system watchdog timer for ASL-B compliance.

Use Value: 4 kV HBM ESD rating ensures robustness against handling discharge; 0.5 V status low-voltage guarantees clean logic-level signaling to safety MCU.

Use Scenario: Multi-speed blower control in rooftop units requiring thermal derating and load monitoring across ambient temperatures.

IC Role / Device Role / Timing Role: High-efficiency power stage with junction temperature tracking via status pin pulse width modulation.

Use Value: 20 °C/W junction-to-case thermal resistance enables direct heatsink mounting; 36 V V_CC headroom accommodates 24 V rail transients.

Equivalent & Alternatives

The following parts are listed as comparable options for similar quad-channel H-bridge smart power applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
VN772K-E	Higher current limit (10 A typ), same SO-28 package, identical pinout - adds 25% overload margin without PCB redesign	Preferred for motors drawing >8 A peak or operating above 85 °C ambient	Select when thermal headroom or higher stall current is required; shares same footprint and diagnostic behavior
TPS2H160-Q1	Single-channel 60 V high-side switch (not quad or H-bridge); requires external low-side FETs and discrete diagnostics	Used in modular designs where channel independence and board-level flexibility outweigh integration benefits	Choose only if system demands channel isolation, higher voltage (60 V), or AEC-Q100 Grade 0 qualification - not a drop-in replacement

Compared with VN770K-E, VN772K-E offers higher current capability in identical form factor for seamless upgrade, while TPS2H160-Q1 trades integration for voltage scalability and channel-level control-making it suitable only for non-H-bridge topologies requiring discrete implementation.

Availability

VN770K-E is available at Aetrix Electronics and suitable for automotive body control modules, industrial linear actuators, medical infusion pumps, and commercial HVAC fan systems requiring stable component supply and long-term lifecycle support.

Supply support for VN770K-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 qualification expertise.

The VN770K-E belongs to ST's VIPower™ smart power family, engineered specifically for robust, integrated H-bridge motor control in space-constrained automotive and industrial applications where protection, diagnostics, and thermal resilience are critical.

FAQ

What is the maximum continuous output current per channel?

The VN770K-E does not specify per-channel continuous current but defines total bridge-leg R_DS(on) as 220 mΩ and typical current limitation at 8 A under thermal conditions (T_j = 125 °C). Real-world continuous current depends on PCB copper area, ambient temperature, and airflow; with 6 cm² copper, sustained 7 A per switch is achievable before thermal limiting activates.

How does the DIAGNOSTIC pin indicate open-load versus over-temperature?

The DIAGNOSTIC pin is open-drain and pulled low for both conditions, but timing distinguishes them: open-load detection asserts within 200 µs (on-state) or 1000 µs (off-state), while over-temperature response delays 20 µs after junction exceeds 150 °C. System firmware must use these timing windows and context (e.g., active PWM vs idle state) to decode fault type.

Can VN770K-E drive inductive loads without external flyback diodes?

Yes - integrated clamping circuits protect against inductive kickback: high-side switches clamp to V_CC, low-side switches clamp to V_CC−41 V (min). This eliminates need for external freewheeling diodes in standard H-bridge motor drive configurations, reducing BOM count and PCB area.

Is VN770K-E qualified for automotive applications?

While not explicitly AEC-Q100 certified in its datasheet revision (Rev 5, 2013), the VN770K-E uses ST's automotive-qualified VIPower™ M0-3 and OMNIFET II processes, operates across −40 to +150 °C case temperature, and meets ISO 10605 ESD requirements - making it widely deployed in automotive body electronics such as power seats and mirrors, subject to end-system validation.

VN770K-E Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: OMNIFET II™, VIPower™

Package/Case:: 28-SOIC (0.295", 7.50mm Width)

Packaging:: Tube

Product Status:: Obsolete

Output Configuration:: Half Bridge (2)

Applications:: DC Motors, General Purpose, Relays

Interface:: Logic

Load Type:: Inductive

Technology:: Power MOSFET

Rds On (Typ):: 160mOhm (Max)

Current - Output / Channel:: 9A

Current - Peak Output:: -

Voltage - Supply:: 5.5V ~ 36V

Voltage - Load:: 40V (Max)

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

Grade:: -

Qualification:: -

Features:: Status Flag

Fault Protection:: Current Limiting, ESD, Open Load Detect, Over Temperature, Over Voltage, Short Circuit, UVLO

Mounting Type:: Surface Mount

Supplier Device Package:: 28-SO

VN770K-E FAQ

1.How can I place an order for VN770K-E through Aetrix?

Please submit a Request for Quotation (RFQ) for VN770K-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 VN770K-E reliable?

The price and inventory of VN770K-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for VN770K-E is usually 5 days.

3.What payment methods are accepted for VN770K-E?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VN770K-E transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for VN770K-E?

VN770K-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your VN770K-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 VN770K-E?

For technical support, including VN770K-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VN770K-E requirements.

6.How does Aetrix verify that VN770K-E is sourced from the original manufacturer or authorized distributors?

All VN770K-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 VN770K-E meets industry standards.

7.What is the process for return or replacement of VN770K-E?

All VN770K-E units undergo pre-shipment inspection (PSI). If there is an issue with VN770K-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 VN770K-E part is unused and in its original packaging.

Return procedure for VN770K-E:

1.Submit a request within 90 days.

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

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