STMicroelectronics VNB35N07

Overview

VNB35N07 from STMicroelectronics is a fully autoprotected monolithic VIPower M0 smart power MOSFET designed for high-reliability DC–50 kHz switching in industrial and automotive loads. It features 70 V drain-source clamping, 0.028 Ω R_DS(on) at 10 V_IN, 35 A current limit, integrated thermal shutdown (150 °C), and diagnostic feedback via the input pin. It replaces standard MOSFETs in solenoid, motor, and lamp drivers where ruggedness against inductive transients is critical.

For engineers reviewing the VNB35N07 datasheet, VNB35N07 pinout, VNB35N07 application, or VNB35N07 equivalent, key selection criteria include its linear current limiting behavior, fault-sensing capability through the input pin, clamp energy rating (2.5 J), gate-accessible analog driving mode, and compatibility with TTL-level logic drive despite 250–500 µA input supply current.

Technical Context

The device integrates a vertical power MOSFET with on-chip protection circuitry including overvoltage clamp (70 V typ.), linear current limiter (25–45 A depending on V_IN), and junction temperature sensing with 150 °C shutdown / 135 °C restart hysteresis. Its input pin serves dual roles: gate control during normal operation and fault indicator (pulled to ~0 V via 100 Ω) during thermal or short-circuit events.

It operates as a single-ended high-side switch with direct gate access, enabling analog PWM control. The internal clamp and avalanche-rated structure (E_AS = 2.5 J) allow safe unclamped inductive switching-critical for relay and solenoid drive without external snubbers. Thermal resistance is 1 °C/W (D2PAK) or 3.12 °C/W (ISOWATT220), enabling high-power dissipation with minimal heatsinking.

Key Specifications

Pinout & Package

Package: D2PAK (TO-263) - surface-mount, thermally enhanced package with exposed drain tab for PCB heat sinking. Pin configuration: Input (pin 1), Source (pins 2,3), Drain (tab).

Key Features

Applications

Equivalent & Alternatives

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

Compared with STSPIN840 and IPS1025H, VNB35N07 uniquely combines 70 V clamping, 2.5 J avalanche rating, and diagnostic sink functionality-making it the only choice for cost-sensitive, high-ruggedness 24 V inductive load switching without external protection.

Availability

VNB35N07 is available at Aetrix Electronics and suitable for automotive body electronics, industrial solenoid control, DC motor starters, and LED streetlight power stages requiring stable component supply and long-term lifecycle support.

Supply support for VNB35N07 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 power management, automotive ICs, and smart power technologies.

VNB35N07 belongs to the OMNIFET family of VIPower M0 smart power switches-designed specifically for replacing unprotected MOSFETs in harsh industrial and automotive environments with integrated protection and diagnostics.

FAQ

Can VNB35N07 be used as a low-side switch?

No. VNB35N07 is configured exclusively as a high-side switch with source pins tied to ground reference. Its internal architecture and protection circuitry assume source-connected-to-ground topology. Using it as a low-side switch would disable current limiting, thermal sensing, and fault feedback functions, risking device failure.

What is the maximum recommended switching frequency?

The datasheet specifies reliable operation up to 50 kHz for resistive and inductive loads. At higher frequencies, switching losses increase significantly due to fixed 100 nC input charge and 600 ns typical turn-off delay (R_gen = 10 Ω). For >50 kHz use, thermal derating and gate driver optimization are mandatory-consult ST AN4447 for layout and drive guidelines.

Does the input pin require a pull-up or pull-down resistor?

Yes. A 10 kΩ pull-down resistor is recommended on the input pin to ensure defined off-state during MCU reset or floating control conditions. Without it, leakage current (I_ISS = 250–500 µA) may partially turn on the device, causing unintended load activation or elevated standby power.

How is the fault condition detected and cleared?

Fault is detected by monitoring input pin voltage: during thermal or short-circuit events, it drops to ~0 V (via internal 100 Ω sink). Clearing occurs automatically when junction temperature falls below 135 °C, restoring normal gate control. No external reset signal is required-recovery is fully autonomous and self-timed.