STMicroelectronics VN9004AJTR

Overview

VN9004AJTR from STMicroelectronics is a single-channel automotive smart high-side driver in PowerSSO-16 package, designed for 12 V grounded loads with CMOS-compatible 3 V/5 V control. It delivers 4.2 mΩ on-state resistance, 108 A current limitation, <0.5 µA standby current, and multiplexed analog current sense feedback. Used in glow plug control, DC motor driving, and relay replacement under deep cold cranking (LV124 Rev 2013).

For engineers reviewing the VN9004AJTR datasheet, VN9004AJTR pinout, VN9004AJTR application, or VN9004AJTR equivalent, key selection criteria include AEC-Q100 qualification, fault-reset latch-off configuration, reverse-battery robustness, OFF-state open-load detection with external pull-up, and ±7% current-sense ratio accuracy at 15 A.

Technical Context

The device integrates VIPower M0-9 technology to combine power MOSFET switching with real-time thermal transient management via spatial temperature gradient sensing. Its power limitation protection triggers when dynamic junction temperature rise (ΔTJ_SD) exceeds 55 K at 19 V or 80 K at 16 V, enabling self-limiting without external thermal sensors.

Diagnostic functionality centers on the CS pin's time-multiplexed analog output: it delivers proportional load current (K = 19050 ±7% at 15 A), chip temperature sense, supply voltage feedback, and discrete fault flags (short-to-VCC, open-load, thermal shutdown) - all selectable via SEn and controlled by INPUT0/FaultRST logic states.

Key Specifications

Pinout & Package

Delivered in PowerSSO-16 package: thermally enhanced exposed-tab SO-16 variant with integrated heatsink pad (TAB = VCC), optimized for high-current automotive PCB layouts.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BTS7004-1EPP and MC33883, VN9004AJTR uniquely combines ultra-low RON (4.2 mΩ), high ILIM (108 A), and true analog multiplexed diagnostics on one pin - enabling direct connection to microcontroller ADCs without signal conditioning, critical for cost-sensitive, space-constrained automotive modules.

Availability

VN9004AJTR is available at Aetrix Electronics and suitable for glow plug control, DC motor drive, and heating system actuation requiring stable component supply across automotive production lifecycles.

Supply support for VN9004AJTR 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-grade power ICs, microcontrollers, and sensors with AEC-Q100 design-in assurance.

VN9004AJTR belongs to the VIPower™ M0-9 smart power family, engineered specifically for robust, diagnostic-rich high-side switching in 12 V automotive power distribution networks.

FAQ

What is the maximum reverse battery voltage the VN9004AJTR can withstand?

The VN9004AJTR features reverse-battery protection through self-turn-on immunity, rated for -13 V at -15 A with 4.2 mΩ RDSON in reverse condition. It does not require external series diodes but mandates an external reverse-battery protection network on the GND pin per datasheet Section 1.1.

How does the multiplexed CS pin encode different diagnostic signals?

The CS pin outputs current proportional to load current (IOUT/K) when SEn = high and INPUT0 = high. During fault events (e.g., open-load, thermal shutdown), it shifts to fixed-voltage or fixed-current modes: VSENSEH = 4.3–7.5 V for open-load, ISENSEH = 4.4–12 mA for fault indication - all selected via internal state machine without external addressing.

Can the VN9004AJTR operate reliably during engine cranking at 4 V?

Yes. The device guarantees operation from 4 V to 28 V and is explicitly qualified for deep cold cranking per LV124 Rev 2013. At 4 V, RON rises to 7.2 mΩ (still enabling >10 A continuous), undervoltage shutdown releases at 4.5 V, and logic inputs remain functional with 0.9 V/2.1 V thresholds.

What is the thermal performance difference between RthJB and RthJA values?

RthJB = 5.9 °C/W (junction-to-board) assumes mounting on a 4-layer PCB with thermal vias to inner ground planes - reflecting real-world automotive module cooling. RthJA = 19.2 °C/W applies to a 2-layer board with 2 cm² copper heatsink, while 52.2 °C/W is for minimal copper; thermal design must prioritize board conduction over ambient convection.