STMicroelectronics VN7020AJTR

Overview

VN7020AJTR from STMicroelectronics is a dual-channel automotive smart high-side driver in PowerSSO-16 package, implementing VIPower® M0-7 technology. It delivers 20 mΩ on-state resistance per channel, 63 A typical current limitation, and multi-sourced analog diagnostics (load current, VCC, chip temperature) via multiplexed MultiSense pin. Designed for 12 V grounded loads with 3 V/5 V CMOS-compatible control, it serves turn indicators, ADAS radar/sensor supplies, and resistive/inductive/capacitive automotive loads.

For engineers reviewing the VN7020AJTR datasheet, VN7020AJTR pinout, VN7020AJTR application, or VN7020AJTR equivalent, key selection criteria include its AEC-Q100 qualification, latch-off configurability via FaultRST, standby current of 0.5 µA, thermal shutdown at 150 °C, and diagnostic multiplexing using SEL0/SEL1/SEn pins - all critical for functional safety-compliant automotive power distribution.

Technical Context

The VN7020AJTR integrates two independent high-side switches with active current limiting and dynamic thermal management. Its VIPower® M0-7 process enables self-limiting fast thermal transients and precise proportional current mirroring (K-factor range: 550–5100 A/A depending on IOUT), while the MultiSense architecture uses a single analog output pin to sequentially deliver load current (IOUT/ISENSE), VCC supply voltage (VSENSE_VCC = VCC/4), and chip temperature (VSENSE_TC = 2.07 V @ 25 °C, −5.5 mV/K).

Protection logic includes undervoltage shutdown (VUSD = 4 V), overvoltage clamp (41–52 V), configurable latch-off on overtemperature or power limitation, and fault reset via active-low FaultRST pin. OFF-state open-load detection triggers at VOUT > 2–4 V, and short-to-VCC is identified by negative output voltage during inductive turn-off.

Key Specifications

Pinout & Package

Package: PowerSSO-16 - thermally enhanced exposed-tab SO-16 variant with integrated heatsink pad connected to VCC. Optimized for PCB heat spreading in automotive under-hood environments.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BTS7004-1EPP and MC33883, the VN7020AJTR uniquely combines dual-channel integration, multiplexed analog diagnostics (current/VCC/temperature), and user-configurable latch-off - making it optimal for ASIL-B-compliant ADAS and lighting systems demanding comprehensive real-time health monitoring.

Availability

VN7020AJTR is available at Aetrix Electronics and suitable for automotive lighting control, ADAS radar power distribution, body control module outputs, and electric power steering sensor supplies requiring stable component supply across extended temperature and lifecycle demands.

Supply support for VN7020AJTR 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 strong IP in ruggedized silicon processes.

VN7020AJTR belongs to ST's VIPower® family of intelligent power switches, engineered specifically for automotive power distribution with integrated protection, diagnostics, and AEC-Q100 reliability - targeting next-generation zonal architectures and domain controllers.

FAQ

What is the maximum transient voltage the VN7020AJTR can withstand?

The VN7020AJTR supports up to 40 V transient supply voltage per ISO 16750-2 Test B (clamped), with absolute maximum DC rating of 38 V. Its internal overvoltage clamp activates at 41–52 V depending on temperature, protecting downstream loads during load-dump events without external TVS diodes.

How does the MultiSense pin distinguish between current, VCC, and temperature measurements?

MultiSense output is selected by the combination of SEn (active-high), SEL0, and SEL1. When SEn = 5 V, SEL0 = 0 V/SEL1 = 0 V yields proportional current (IOUT/K); SEL0 = 0 V/SEL1 = 5 V yields chip temperature voltage (2.07 V @ 25 °C); SEL0 = 5 V/SEL1 = 5 V yields VCC/4. Each mode has dedicated settling times (60–250 µs) specified in the datasheet.

Can VN7020AJTR drive inductive loads like fuel injectors or solenoids?

Yes - the device includes active demagnetization control with VDEMAG clamping (VCC − 38 V to VCC − 52 V) and supports inductive turn-off energy dissipation. Its 64 mJ maximum switching energy (Tj = 150 °C) and dVOUT/dt control (0.1–0.7 V/µs) ensure safe operation with L = 6 mH loads common in solenoid drivers.

Is external reverse battery protection required on the GND pin?

Yes - the datasheet explicitly requires an external diode or resistor network on the GND pin to protect against reverse battery conditions (−14 V). The device itself does not integrate reverse-polarity protection on GND; omission risks permanent damage per absolute maximum ratings (−IGND = 200 mA limit).