STMicroelectronics VN7140ASTR-E

Overview

VN7140ASTR-E from STMicroelectronics is a single-channel smart high-side power switch in PowerSSO-16 package, designed for 12 V automotive grounded loads with 3 V/5 V CMOS-compatible control. It delivers 12 A current limitation, 140 mΩ typical on-state resistance, and integrated MultiSense analog feedback for load current, VCC, and chip temperature. Used in body control modules for driving lamps, solenoids, and relays.

For engineers reviewing the VN7140ASTR-E datasheet, VN7140ASTR-E pinout, VN7140ASTR-E application, or VN7140ASTR-E equivalent, key selection criteria include diagnostic multiplexing capability, latch-off configurability via FaultRST, standby current ≤0.5 µA, and thermal shutdown with thermal resistance junction-to-ambient of 39 °C/W.

Technical Context

The VN7140ASTR-E implements VIPower® M0-7 technology to combine power switching and real-time diagnostics in one die. Its MultiSense output multiplexes three analog signals-load current (via precision proportional current mirror), supply voltage, and junction temperature-using SEL0/SEL1 address lines and S_EN enable control.

Protection architecture includes undervoltage lockout, overvoltage clamping at 40 V transient, self-limiting fast thermal transients, and configurable latch-off on overtemperature or power limitation. FaultRST provides active-low reset for latched faults or enables auto-restart mode when held low.

Key Specifications

Availability

VN7140ASTR-E is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC output stages, and embedded power distribution systems requiring stable component supply, AEC-Q100 compliance, and long-term lifecycle support.

Supply support for VN7140ASTR-E 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, designing and manufacturing microcontrollers, power ICs, sensors, and automotive-grade analog devices.

VN7140ASTR-E belongs to the VIPower® high-side driver product line, engineered specifically for robust, diagnostic-enabled 12 V automotive load control with minimal external components.

FAQ

What is the function of the FaultRST pin?

FaultRST is an active-low input that unlatches the output after a fault-induced shutdown (e.g., overtemperature or overload). When held low, it configures the device for auto-restart mode instead of latched-off behavior. It is compatible with both 3 V and 5 V CMOS logic levels and requires no external pull-up resistor.

How does MultiSense feedback work?

MultiSense is a single analog output pin delivering current-proportional signals for three diagnostics: load current (via internal current mirror), VCC supply voltage, and chip temperature. Selection is controlled by SEL0/SEL1 address bits and enabled by S_EN. This eliminates need for separate ADC channels while maintaining ±5% accuracy across operating conditions.

Can VN7140ASTR-E drive inductive loads safely?

Yes - the device integrates active clamp circuitry and fast thermal transient limiting to suppress inductive kickback energy. Combined with built-in overvoltage clamp (40 V max transient) and configurable latch-off, it safely controls solenoids, valves, and relays without external flyback diodes in most automotive applications.

What package type and thermal requirements apply?

VN7140ASTR-E uses PowerSSO-16, a surface-mount package with exposed die-pad for enhanced thermal dissipation. On a standard 2-layer FR4 board (1.6 mm thick, 35 µm Cu, thermal vias at 1.1 mm spacing), its junction-to-ambient thermal resistance is 39 °C/W - enabling 12 A operation with ≤50 °C temperature rise at ambient 85 °C.