STMicroelectronics VN750PSTR-E

Overview

VN750PSTR-E from STMicroelectronics is an automotive-grade high-side power switch IC designed for driving grounded loads in 12 V/24 V vehicle systems. It features 60 mΩ on-resistance, 6 A continuous output current, 36 V operating supply voltage, and integrated open-load detection (on/off-state), short-circuit protection, and reverse-battery immunity. It is used in body control modules for controlling lamps, solenoids, and small motors.

For engineers reviewing the VN750PSTR-E datasheet, VN750PSTR-E pinout, VN750PSTR-E application, or VN750PSTR-E equivalent, key selection criteria include its AEC-Q100 qualification, SO-8 package thermal performance, CMOS-compatible input logic, status pin diagnostics, and ISO 7637-2 transient immunity - all critical for robust automotive power distribution design.

Technical Context

The VN750PSTR-E implements a monolithic VIPower™ M0-3 high-voltage DMOS architecture with active VCC clamp for ISO 7637-2 pulse immunity and thermal shutdown with automatic restart. Its internal current limiter activates at 6–15 A depending on junction temperature and supply voltage, enabling safe overload handling without external components.

It provides dual-mode open-load detection: in on-state via output current threshold (50–200 mA), and in off-state via output voltage threshold (1.5–3.5 V). The status pin delivers diagnostic feedback including overtemperature, undervoltage, overvoltage, and open-load faults - all synchronized to input timing with defined delay windows (e.g., tDOL(on) = 200 µs, tDOL(off) = 1000 µs).

Key Specifications

Pinout & Package

The VN750PSTR-E is housed in a standard SO-8 surface-mount package with exposed thermal pad (pin 4 connected to GND internally), optimized for automotive PCB thermal management per JEDEC MS-012.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BTS716G and MC33883, the VN750PSTR-E offers superior diagnostic completeness (dual open-load modes, reverse-battery immunity, loss-of-ground detection) in a compact SO-8 package - making it optimal for safety-critical, space-constrained automotive body electronics where fault visibility and reliability are prioritized over raw current rating.

Availability

VN750PSTR-E is available at Aetrix Electronics and suitable for automotive body control modules, engine management subsystems, and ADAS power distribution networks requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for VN750PSTR-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 broad manufacturing and quality certification infrastructure.

The VN750PSTR-E belongs to ST's VIPower™ high-side driver family, engineered specifically for automotive power distribution applications demanding AEC-Q100 compliance, integrated diagnostics, and robust transient immunity in harsh electrical environments.

FAQ

What is the maximum inductive load energy the VN750PSTR-E can safely demagnetize?

The device supports up to 100 mJ of demagnetization energy at V_CC = 13.5 V and T_jstart = 150 °C, as specified in the SO-8 maximum demagnetization energy table. This value assumes L = 1.8 mH, R_L = 0 Ω, and accounts for internal clamp voltage behavior during turn-off. Exceeding this energy risks thermal stress beyond safe operating area limits.

How does the STATUS pin behave during undervoltage conditions?

During undervoltage (V_CC < 4 V), the STATUS pin goes high-impedance (open-drain disabled) after a brief delay, indicating invalid operation. This behavior is defined in the truth table and status timing diagrams: the pin remains inactive until V_CC rises above the undervoltage hysteresis threshold (4.5 V), ensuring clean startup sequencing without false fault reporting.

Can the VN750PSTR-E drive capacitive loads directly?

No - the device is not characterized or guaranteed for direct capacitive load switching. Its output stage is optimized for resistive and inductive loads. Driving large capacitive loads (e.g., >100 nF) may cause excessive inrush current, violating absolute maximum ratings for I_OUT and triggering current-limit protection or thermal shutdown. External current-limiting resistors or soft-start circuits are required for such use cases.

Is the N.C. pin (Pin 7) required to be grounded for EMC performance?

No - Pin 7 is internally unconnected and must remain floating or be tied to GND only if recommended by ST's layout guidelines for that specific revision. Datasheet Table 2 explicitly states "Floating" as the suggested connection. Grounding it unnecessarily may introduce parasitic coupling paths and degrade high-frequency immunity; ST confirms no EMC benefit from grounding this pin in standard implementations.