STMicroelectronics VN750-B5

Overview

VN750-B5 from STMicroelectronics is a high-side power switch IC designed for automotive and industrial load driving, featuring 60 mΩ R_DS(on), 6 A continuous output current, and 36 V maximum supply voltage in P2PAK package. It provides CMOS-compatible input control, on/off-state open-load detection, short-circuit protection, and reverse battery protection - deployed in engine control modules, body electronics, and lighting systems.

For engineers reviewing the VN750-B5 datasheet, VN750-B5 pinout, VN750-B5 application, or VN750-B5 equivalent, key selection criteria include thermal performance in P2PAK layout, status pin diagnostic timing (200 µs ON-state detection delay), undervoltage/overvoltage shutdown thresholds (4 V / 36 V), and active current limiting (6–15 A).

Technical Context

The VN750-B5 integrates VIPower® M0-3 technology to combine vertical power MOSFET structure with intelligent protection logic. Its internal architecture includes active current limitation, thermal shutdown with 150°C trip and 135°C reset, and dual-mode open-load detection: ON-state via output current threshold (50–200 mA) and OFF-state via output voltage sensing (1.5–3.5 V).

Protection functions operate autonomously: loss-of-ground detection disables output when GND disconnects; VCC clamp limits low-energy transients; and demagnetization clamp (VCC − 41 V to VCC − 55 V) suppresses inductive kickback. All protections feed into a single open-drain STATUS pin with programmable fault reporting.

Key Specifications

Pinout & Package

The VN750-B5 is housed in a thermally enhanced P2PAK surface-mount package (4.5 × 6.0 mm footprint, 1.7 mm height), optimized for PCB copper area thermal coupling and high-current routing. The package features exposed drain pad for direct thermal path to PCB ground plane.

Key Features

Applications

Equivalent & Alternatives

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

Compared with VN750-B5, STSPIN250 offers better conduction efficiency but sacrifices diagnostic completeness, while TPS27081A reduces system integration level but lacks the comprehensive fault coverage needed for ASIL-B compliant designs.

Availability

VN750-B5 is available at Aetrix Electronics and suitable for automotive ECU design, commercial vehicle lighting control, and industrial actuator interfacing requiring stable component supply across extended temperature and voltage ranges.

Supply support for VN750-B5 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 specializing in automotive-grade power management, microcontrollers, and analog ICs, with manufacturing certified to IATF 16949 and AEC-Q100 standards.

The VN750-B5 belongs to ST's VIPower® high-side driver family, engineered specifically for robust load switching in harsh automotive environments - emphasizing fault resilience, diagnostic transparency, and thermal reliability.

FAQ

What is the maximum inductive load energy the VN750-B5 can safely demagnetize?

The VN750-B5 supports up to 138 mJ of demagnetization energy in P2PAK configuration (L = 2.46 mH, V_BAT = 13.5 V, I_L = 9 A). This value is validated per Figure 27 in the datasheet and assumes proper PCB copper area (≥0.5 cm²) under free-air conditions. Exceeding this energy risks thermal runaway unless external snubbing is added.

Does the STATUS pin require an external pull-up resistor?

Yes - the STATUS pin is open-drain and must be pulled up externally (typically 4.7 kΩ to VCC) to generate a valid logic-high signal during normal operation. During any fault condition (overcurrent, thermal, open-load), the pin pulls low with ≤0.5 V at 1.6 mA sink current, as specified in Table 9.

Can the VN750-B5 be used in 24 V industrial systems with 48 V transients?

No - the absolute maximum VCC rating is 41 V (Table 3), and the overvoltage shutdown triggers at 36 V. For 48 V transient environments, external clamping (e.g., TVS diode rated ≤33 V) is mandatory upstream of VCC to prevent permanent damage. The internal clamp alone does not cover 48 V events.

How does the VN750-B5 handle ground disconnection during operation?

It detects loss of ground via internal GND protection network and immediately disables the output stage within microseconds. This behavior is documented in Section 2.5 and prevents hazardous floating output voltages. The STATUS pin asserts low to indicate "loss of ground" as a distinct fault condition alongside overcurrent and thermal events.