STMicroelectronics VNQ7003SYTR

Overview

VNQ7003SYTR from STMicroelectronics is a quad-channel automotive-grade high-side driver IC built on VIPower® technology, designed to control resistive or inductive grounded loads (e.g., bulbs, LEDs, solenoids) with integrated 16-bit SPI interface, real-time diagnostics, and dual-level current limiting. It supports BULB/LED mode programming per channel, limp-home fail-safe operation, and load-dump protection. Used in body control modules for headlight, fog light, and interior lighting control.

For engineers reviewing the VNQ7003SYTR datasheet, VNQ7003SYTR pinout, VNQ7003SYTR application, or VNQ7003SYTR equivalent, key selection criteria include channel-specific R_ON (25 mΩ / 7 mΩ), programmable thermal shutdown behavior, SPI diagnostic register access (e.g., CHFBSR, GENSR), and AEC-Q100 Grade 0 qualification for under-hood environments.

Technical Context

The device implements four independent high-side power switches with separate analog current sense multiplexing to a single CURRENT-SENSE pin, enabling proportional load monitoring per channel. Its SPI interface supports both 16-bit full-frame and 8-bit short-frame commands for PWM control and status readback.

Operating modes include Normal, Standby, Sleep, Limp Home (where IN0–IN3 pins directly drive channels during digital supply loss), and Battery Undervoltage mode. Protection logic integrates junction overtemperature detection, power limitation, latch-off or auto-restart thermal shutdown, and open-load detection in OFF-state.

Key Specifications

Pinout & Package

Package: PowerSSO-36 (exposed thermal pad, RoHS-compliant, surface-mount). Thermal resistance θ_JA = 22 °C/W (4-layer PCB, 200 cm² copper area), enabling 4 W continuous dissipation per channel at T_A = 85 °C.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS4H160-Q1 and BD37111GUL, VNQ7003SYTR uniquely delivers quad-channel integration, per-channel programmable load type, multiplexed analog current feedback, and hardware-enforced limp-home operation-making it the only option qualified for ASIL-B body control functions requiring zero-latency fault containment.

Availability

VNQ7003SYTR is available at Aetrix Electronics and suitable for automotive body control modules, lighting systems, and engine bay solenoid drivers requiring stable component supply, AEC-Q100 compliance, and long-term production continuity.

Supply support for VNQ7003SYTR 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, specializing in automotive, industrial, and power management ICs with vertical manufacturing capability and AEC-Q100 process validation.

The VNQ7003SYTR belongs to ST's VIPower® M0-7 family of intelligent power switches, engineered specifically for automotive high-side load control with integrated diagnostics, EMC resilience, and fail-safe architecture.

FAQ

What is the maximum allowable VCC voltage during load dump testing?

The VNQ7003SYTR withstands load dump transients up to 40 V for 400 ms per ISO 7637-2 Pulse 5a, thanks to its internal overvoltage clamp and reinforced oxide structure. No external TVS diode is required for standard 12 V system compliance, though a 36 V TVS is recommended for enhanced margin in 24 V commercial vehicle designs.

How does the limp-home mode activate and what pins control it?

Limp-home activates automatically upon loss of VDD, digital memory reset, or watchdog timeout. In this mode, channels 0–3 are driven solely by dedicated IN0–IN3 pins-bypassing SPI and internal logic. Each IN pin accepts 3.3 V or 5 V CMOS logic levels and retains state through power cycles via internal latching circuitry.

Can the CURRENT-SENSE pin be used for closed-loop current regulation?

Yes-the CURRENT-SENSE pin outputs a multiplexed analog voltage (0–2.5 V) proportional to load current with ±5% gain accuracy across temperature. When paired with an external 12-bit ADC sampling at ≥10 kHz, it enables real-time current regulation with ≤1% error band for LED dimming or solenoid position control loops.

What SPI commands are required to read real-time channel status?

To read live status, issue a SPI read command to address 0x30h (CHFBSR) for per-channel fault flags (open-load, short-to-VCC), then 0x34h (GENSR) for global events (overtemperature, communication error). Both registers update synchronously with channel switching edges and require no polling delay-status reflects the exact condition at the time of the read transaction.