STMicroelectronics VN5012SAK-E

Overview

VN5012SAK-E from STMicroelectronics is a single-channel automotive high-side driver with integrated analog current sense, designed for controlling resistive, inductive, or capacitive loads connected to ground. It features 12 mΩ typical on-state resistance, 65 A current limitation (typ), 4.5–36 V operating supply range, and CMOS-compatible 3.0 V logic input - enabling direct MCU interfacing in engine control, lighting, and body electronics modules.

For engineers reviewing the VN5012SAK-E datasheet, VN5012SAK-E pinout, VN5012SAK-E application, or VN5012SAK-E equivalent, key selection criteria include its proportional current sense accuracy across –40°C to 150°C, reverse battery protection capability, thermal shutdown with auto-restart, and ISO7637 transient compliance for 12 V/24 V automotive systems.

Technical Context

The VN5012SAK-E integrates ST's VIPower® M0-5 technology to combine power switching, analog current sensing, and multiple fault diagnostics in one monolithic device. Its active VCC clamp (41–52 V) suppresses low-energy transients, while the CS_DIS pin enables digital control of the current sense output impedance.

It implements inrush current management via power limitation, supports load demagnetization energy up to 508 mJ, and delivers precise current sense ratios (K₀ = 5080 typ) with drift ≤ ±8% over full temperature and load range - critical for closed-loop load monitoring in safety-critical automotive subsystems.

Key Specifications

Pinout & Package

Delivered in PowerSSO-24 package - thermally enhanced exposed-tab SO-24 variant with integrated heat slug tied to VCC, optimized for PCB copper area cooling in automotive under-hood environments.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS4H160-Q1 and MC33883, the VN5012SAK-E offers superior transient robustness, tighter current sense accuracy, and active inrush management - making it optimal for new 12 V/24 V power distribution architectures requiring functional safety-aware diagnostics.

Availability

VN5012SAK-E is available at Aetrix Electronics and suitable for engine control units, LED lighting modules, body control modules, and commercial vehicle HVAC systems requiring stable component supply across extended automotive lifecycles.

Supply support for VN5012SAK-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, specializing in automotive-grade power ICs, microcontrollers, and sensors with AEC-Q100 qualification and ISO/TS 16949 manufacturing.

The VN5012SAK-E belongs to ST's VIPower® high-side driver family, engineered specifically for automotive power distribution nodes demanding integrated protection, diagnostics, and EMC resilience in harsh environments.

FAQ

What is the maximum allowable load inductance for safe demagnetization?

The VN5012SAK-E supports up to 6 mH load inductance at 13.5 V VCC, delivering 508 mJ maximum demagnetization energy before exceeding safe voltage clamp limits. This value is validated per Figure 27 and Table 4, ensuring reliable flyback energy absorption without secondary snubbers in solenoid or relay drive applications.

How does the current sense ratio vary with temperature and load?

The current sense ratio K₀ exhibits ±8% drift over –40°C to 150°C at 0.25 A load (Table 10), tightening to ±4% at 25 A (K₃). This graded accuracy enables scalable diagnostic thresholds: low-current open-load detection uses K₀ tolerance, while high-current short-circuit decisions rely on tighter K₃ bounds.

Can CS_DIS be left floating, or must it be actively driven?

CS_DIS may be left floating (per Table 3), which defaults the CURRENT SENSE pin to active mode. However, ST recommends pulling it to GND via 10 kΩ for deterministic behavior in noisy environments. Floating is acceptable only if board layout ensures no coupling to switching nodes or high-dV/dt traces.

Does the device require external reverse battery protection on the GND pin?

Yes - the GND pin lacks internal reverse polarity protection. ST mandates an external network (diode or resistor) per Figure 3.1 to limit reverse current to <200 mA (absolute max rating). Failure to implement this risks permanent damage during battery misconnection events.