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

STMicroelectronics VN5770AKTR-E

Name: VN5770AKTR-E
Brand: STMicroelectronics
SKU: VN5770AKTR-E
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: VN5770AKTR-E

Manufacturer:: STMicroelectronics

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

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

Datasheet:: VN5770AKTR-E.pdf

Description:: IC HALF BRIDGE DRIVER 8.5A 28SO

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Product details

Overview

VN5770AKTR-E from STMicroelectronics is a quad-channel smart power solid-state relay IC integrating two VIPower® M0-5 high-side switches and two VIPower® M0-3 OMNIFET II low-side switches in a single SO-28 package. It delivers 8.5A typical short-circuit current limit, 280mΩ total R_DS(on) per H-bridge side, and 36V V_CC rating for robust DC motor control in full-bridge configurations.

For engineers reviewing the VN5770AKTR-E datasheet, VN5770AKTR-E pinout, VN5770AKTR-E application, or VN5770AKTR-E equivalent, this device supports real-time proportional current sensing (K₀ = 1266–3100), non-latching thermal shutdown with 7°C hysteresis, and integrated overvoltage clamping - critical for automotive-grade motor drive reliability and diagnostic coverage.

Technical Context

The device implements dual independent high-side drivers with active power limitation during inrush, undervoltage shutdown at 4.5V (0.5V hysteresis), and output voltage drop limitation down to 25mV at 30mA. Each high-side channel features proportional analog current sense with temperature-compensated gain coefficients (K₀–K₃) and thermal shutdown flagging via V_SENSE voltage shift to 9V.

Low-side switches provide linear current limitation, source-drain diode forward voltage of 0.7V at 3A/150°C, and fault indication through elevated input pin sink current. Protection architecture includes ESD ratings up to 5kV on V_CC, 4kV on inputs, and 16.5kV on outputs (CDM), with internal clamp voltages up to 52V.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CC Range	4.5V to 36V - supports 12V automotive and industrial rail systems with margin for load dump transients
R_DS(on) (per H-bridge side)	280mΩ - defines conduction loss and thermal rise under 8.5A continuous load
I_LIMH (Short-Circuit Current)	8.5A typical - sets safe current ceiling during fault conditions without external fusing
T_TSD / T_R	150°C shutdown / 135°C reset - enables self-recovering thermal protection with 7°C hysteresis
Current Sense Ratio (K₀)	1266–3100 A/A - enables accurate 0.08–5A load current monitoring with ±20% tolerance across temperature
V_DEMAG Clamp	V_CC−41V to V_CC−52V - suppresses inductive kickback during turn-off to protect MOSFETs and downstream circuitry
t_DSENSE2H	70–300μs - ensures timely fault detection for closed-loop current limiting and safety interlocks

Pinout & Package

Package: SO-28 (Small Outline, 28-pin), surface-mount, thermally enhanced leadframe with exposed pad (not explicitly named but implied by R_thj-case = 10°C/W for HS and 7°C/W for LS).

Pin/Terminal	Circuit Role	Design Meaning
1, 3, 25, 28	DRAIN 3	Power output terminal for low-side switch 3 - connects to load return path
2	INPUT 3	CMOS-compatible logic input controlling low-side switch 3 - 0.9V/2.1V thresholds with 0.25V hysteresis
5, 10, 19, 24	V_CC	Main supply rail for high-side switches and internal bias - accepts 4.5–36V with undervoltage lockout
6	GND	Reference ground for high-side drivers - separate from low-side source pins to support floating operation
7, 8	INPUT 1 / INPUT 2	Independent logic inputs for high-side switches 1 and 2 - enable full H-bridge direction control
9	CURRENT SENSE	Analog output delivering I_SENSE ∝ I_LOAD; shifts to 9V during overtemperature for fault signaling
12, 14, 15, 18	DRAIN 4	Power output terminal for low-side switch 4 - used for second half-bridge leg or independent load switching
13	INPUT 4	Logic input for low-side switch 4 - complements INPUT 3 for dual low-side control
16, 17, 26, 27	SOURCE 4 / SOURCE 3	Return terminals for low-side switches - tied to system ground or current-sense shunt
20, 21, 22, 23	SOURCE 2 / SOURCE 1	Source terminals of high-side switches - form bridge midpoints when paired with DRAIN pins

Key Features

Feature	Design Value
Inrush current management	Active power limitation on high-side switches prevents voltage droop and thermal stress during motor startup
Proportional current sensing	Four-gain coefficient calibration (K₀–K₃) enables accurate load current measurement across 0.08–5A range and −40°C to +150°C
Non-latching thermal shutdown	Auto-recovery after cooling below 135°C eliminates need for manual reset or system reboot
High ESD robustness	5kV HBM on V_CC, 16.5kV CDM on outputs - exceeds automotive requirements for under-hood environments
Output voltage drop limitation	25mV minimum drop at 30mA ensures precise low-current control for position-sensitive actuators

Applications

Automotive Power Window Control

Industrial Conveyor Motor Drive

Use Scenario: Bidirectional 12V DC motor actuation for window lift/lower with stall detection and soft-start.

IC Role / Device Role / Timing Role: Quad-channel H-bridge driver managing direction, braking, and current-limited startup via INPUT 1–4 and CURRENT SENSE feedback.

Use Value: Eliminates discrete MOSFETs, gate drivers, and current-sense amplifiers - reduces BOM count by ≥12 components while enabling ISO 26262 ASIL-B diagnostic coverage.

Use Scenario: Continuous-duty 24V DC motor driving belt conveyors in packaging lines with thermal overload cycling.

IC Role / Device Role / Timing Role: High-side/low-side pair configured as half-bridge per motor phase, with real-time current monitoring for predictive maintenance.

Use Value: 8.5A short-circuit limit and 150°C thermal shutdown prevent coil burnout during jam events; SO-28 package enables compact PCB layout with <12mm² footprint.

Medical Infusion Pump Actuation

Robotics Joint Servo Interface

Use Scenario: Precision micro-stepped DC motor control for syringe advancement with force feedback and stall recovery.

IC Role / Device Role / Timing Role: Low-noise H-bridge driver using proportional current sense (K₀ = 1266–3100) to infer load torque and adjust PWM duty cycle.

Use Value: 25mV output voltage drop limitation enables accurate 10–100mA current regulation - critical for sub-mL fluid dosing accuracy.

Use Scenario: Compact joint motor driver in collaborative robots requiring fast direction reversal and regenerative braking.

IC Role / Device Role / Timing Role: Full-bridge configuration with simultaneous high/low-side switching and V_DEMAG clamping (V_CC−41V) to absorb back-EMF spikes.

Use Value: 70–300μs current sense delay allows closed-loop current limiting within 100μs response time - meets ISO/TS 15066 transient safety requirements.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
VN5E025AJTR-E	Single-channel 25mΩ high-side switch, no low-side integration or current sense	Requires external low-side FETs and separate current-sense circuitry for H-bridge use	Choose when only high-side control is needed and board space permits discrete implementation
TPS27082L	Single-channel 8.5A smart high-side switch with 1.5mΩ R_DS(on), no low-side or analog sense	Lacks integrated low-side switches and proportional current feedback - limited to unidirectional loads	Select for ultra-low-loss 24V industrial loads where diagnostics are handled externally

Compared with VN5770AKTR-E, VN5E025AJTR-E requires four separate ICs plus external components to replicate quad functionality, increasing layout complexity and failure points; TPS27082L offers lower conduction loss but cannot implement full-bridge motor control without additional circuitry and sensing.

Availability

VN5770AKTR-E is available at Aetrix Electronics and suitable for automotive body electronics, industrial motor control, and medical device actuation requiring stable component supply and long-term lifecycle assurance.

Supply support for VN5770AKTR-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 and AEC-Q100 qualification expertise.

The VN5770AKTR-E belongs to ST's VIPower® smart power family, designed specifically for replacing electromechanical relays in harsh-environment H-bridge motor control with integrated protection, diagnostics, and thermal resilience.

FAQ

What is the maximum continuous output current per channel?

The VN5770AKTR-E does not specify a continuous current rating independent of thermal conditions. Its 8.5A value is the typical short-circuit current limit under V_CC = 13V. Actual continuous current depends on PCB copper area, ambient temperature, and airflow - with SO-28 R_thj-amb ranging from 35°C/W to 60°C/W. At T_c = 25°C, total dissipation is rated at 4W, supporting ~3–4A continuous per high-side channel with proper heatsinking.

How does the CURRENT SENSE pin indicate thermal shutdown?

During overtemperature shutdown of either high-side switch, the CURRENT SENSE pin voltage rises from its proportional analog range (up to 5V) to 9V, while output current increases to 8mA. This voltage flag is distinct from normal operation and provides immediate hardware-level fault signaling without software polling - enabling fail-safe shutdown in safety-critical systems.

Can VN5770AKTR-E drive inductive loads without external flyback diodes?

Yes. The device integrates internal clamp circuitry that limits V_DEMAG to V_CC−41V during turn-off, suppressing inductive kickback. This eliminates the need for external flyback diodes in most 12V/24V DC motor applications. However, for high-energy inductors (L > 20mH) or high-frequency PWM, external RC snubbers may still be recommended per Figure 36 in the datasheet.

Is VN5770AKTR-E pin-compatible with earlier VN5770AK-E versions?

Yes. VN5770AKTR-E is the tape-and-reel variant of the same SO-28 die and pinout as VN5770AK-E. The "TR" suffix denotes packaging format only (reel vs. tube); electrical characteristics, thermal performance, and functional behavior are identical. No PCB redesign or firmware changes are required when migrating between these order codes.

VN5770AKTR-E Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: OMNIFET II™, VIPower™

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

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Output Configuration:: Half Bridge (2)

Applications:: DC Motors, General Purpose, Relays

Interface:: Logic

Load Type:: Inductive, Capacitive, Resistive

Technology:: Power MOSFET

Rds On (Typ):: 160mOhm

Current - Output / Channel:: 8.5A

Current - Peak Output:: -

Voltage - Supply:: 4.5V ~ 36V

Voltage - Load:: 41V (Max)

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

Grade:: -

Qualification:: -

Features:: -

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

Mounting Type:: Surface Mount

Supplier Device Package:: 28-SO

VN5770AKTR-E FAQ

1.How can I place an order for VN5770AKTR-E through Aetrix?

Please submit a Request for Quotation (RFQ) for VN5770AKTR-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 VN5770AKTR-E reliable?

The price and inventory of VN5770AKTR-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for VN5770AKTR-E is usually 5 days.

3.What payment methods are accepted for VN5770AKTR-E?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VN5770AKTR-E transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for VN5770AKTR-E?

VN5770AKTR-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your VN5770AKTR-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 VN5770AKTR-E?

For technical support, including VN5770AKTR-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VN5770AKTR-E requirements.

6.How does Aetrix verify that VN5770AKTR-E is sourced from the original manufacturer or authorized distributors?

All VN5770AKTR-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 VN5770AKTR-E meets industry standards.

7.What is the process for return or replacement of VN5770AKTR-E?

All VN5770AKTR-E units undergo pre-shipment inspection (PSI). If there is an issue with VN5770AKTR-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 VN5770AKTR-E part is unused and in its original packaging.

Return procedure for VN5770AKTR-E:

1.Submit a request within 90 days.

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

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