STMicroelectronics VND5025AKTR-E

Overview

VND5025AKTR-E from STMicroelectronics is a double-channel high-side driver IC for automotive power distribution, integrating analog current sense with 25 mΩ on-state resistance per channel, 41 A typical current limit, and 4.5–36 V operating supply range. It drives resistive, inductive, or capacitive loads (e.g., solenoids, lamps, LED arrays) with active power limitation, thermal shutdown with auto-restart, and reverse-battery protection support.

For engineers reviewing the VND5025AKTR-E datasheet, VND5025AKTR-E pinout, VND5025AKTR-E application, or VND5025AKTR-E equivalent, key selection criteria include its dual-channel high-side topology, proportional current sense ratio (K₀ = 1720–4360), CMOS-compatible 3.0 V logic inputs, PowerSSO-24™ thermal performance, and ISO7637 transient compliance for 12 V/24 V vehicle systems.

Technical Context

This device implements two independent VIPower M0-5 high-side switches with integrated current-sense amplifiers, each featuring active in-rush management via dynamic power limiting and self-limiting fast thermal transients. Its diagnostic architecture delivers proportional I_SENSE current (not voltage) with ±12% ratio drift over load and temperature, and supports CS_DIS–controlled high-impedance disable mode.

Protection includes undervoltage shutdown (V_USD = 4.5 V), overvoltage clamp (41 V), output short-circuit current limiting (ILIMH = 41 A typ.), and thermal shutdown at 150–200 °C with 7 °C hysteresis. The device complies with automotive EMC requirements per ISO7637 and integrates ESD protection (HBM 4 kV on inputs).

Key Specifications

Pinout & Package

Package: PowerSSO-24™ - thermally enhanced exposed-tab SO-24 package with integrated heat slug tied to V_CC, 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 applications.

Compared with VND5025AKTR-E, TPS4H160-Q1 trades integration for channel count and cost, while VND7050AJTR-E increases current capacity at the expense of diagnostic flexibility - making the VND5025AKTR-E optimal for dual-load systems requiring programmable current sense enablement and automotive-grade transient resilience.

Availability

VND5025AKTR-E is available at Aetrix Electronics and suitable for automotive body control modules, LED headlamp drivers, engine bay solenoid controllers, and commercial vehicle trailer interfaces requiring stable component supply across extended temperature and voltage ranges.

Supply support for VND5025AKTR-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, Switzerland, specializing in automotive, industrial, and power management ICs with vertical manufacturing and AEC-Q100 qualification expertise.

The VND5025AKTR-E belongs to ST's VIPower high-side driver product line, engineered specifically for automotive power distribution units where reliability, thermal robustness, and integrated diagnostics are mandatory.

FAQ

What is the function of the CS_DIS pin?

The CS_DIS pin is an active-high CMOS-compatible input that disables the internal current sense amplifier. When driven high (≥2.1 V), it places CURRENT SENSE1 and CURRENT SENSE2 pins into high-impedance state, eliminating leakage current and enabling precise open-circuit diagnostics. When low or floating, the pins deliver proportional I_SENSE current per the specified K-ratio.

How does the VND5025AKTR-E handle reverse battery conditions?

The device itself does not tolerate reverse battery at V_CC or GND. However, its GND pin is designed to interface with external reverse-battery protection networks - either a series resistor (RGND) or Schottky diode (DGND) - as detailed in Section 3.1 of the datasheet. This architecture preserves functionality while meeting ISO 16750-2 requirements.

Can this IC drive inductive loads like fuel injectors without external flyback components?

No. While the VND5025AKTR-E includes internal V_DEMAG clamping (V_CC − 41 V), external freewheeling diodes or RC snubbers are required for reliable demagnetization energy dissipation in high-inductance solenoids. Figure 27 specifies maximum turn-off current versus inductance, guiding external component selection.

What is the thermal resistance junction-to-ambient for PowerSSO-24™ in standard layout?

With one channel ON and 10 cm² PCB copper area in free-air conditions, R_thj-amb is 25 °C/W (Figure 29). Performance improves significantly with larger copper pours or heatsinking to the exposed V_CC tab. The junction-to-case resistance is 1.35 °C/W maximum, enabling direct thermal coupling to chassis or metal-core PCBs.