VND5T035AK-E

STMicroelectronics VND5T035AK‑E VIPower dual high‑side driver with analog current sense

A robust, dual‑channel, high‑side power switch built for 24 V automotive and industrial loads, the STMicroelectronics VND5T035AK‑E combines low RDS(on) MOSFETs, analog current sense diagnostics, and a comprehensive protection suite in a compact PowerSSO‑16 package.

• Brand: STMicroelectronics (VIPower series)
• MPN: VND5T035AK‑E
• Category: Automotive high‑side switches
• Package: PowerSSO‑16, 16 leads
• Mounting: Surface mount (SMD)

Overview

The STMicroelectronics VND5T035AK‑E is a double (2‑channel) high‑side driver tailored for 24 V automotive systems and compatible industrial 24 V applications. Each channel integrates a low‑RDS(on) power MOSFET (typical 35 mΩ per channel) and an analog current sense output that enables on‑board diagnostics, load monitoring, and fault reporting to the ECU or system controller. With built‑in protections such as thermal shutdown, current limiting, short‑to‑ground protection, open‑load detection, and undervoltage lockout, the device simplifies load driving while enhancing system safety and reliability.

This device targets body electronics and general power distribution tasks—driving lamps and LED strings, solenoids and valves, heaters/resistive loads, and DC motors or other inductive loads—where diagnostic visibility and ruggedness are essential.

Key takeaways

• Dual high‑side channels for 24 V automotive and industrial loads
• 35 mΩ (typ) RDS(on) per channel for efficient power switching
• Analog current sense output for real‑time monitoring and diagnostics
• Integrated protection features (thermal shutdown, current limiting, short‑to‑ground, open‑load detection, undervoltage lockout)
• Compact PowerSSO‑16 package, AEC‑Q100 qualified and RoHS compliant

Features and benefits

• Dual channel architecture
• Drives two independent loads from a common 24 V supply, reducing component count in multi‑load nodes.
• Low conduction losses
• Typical 35 mΩ RDS(on) per channel minimizes I²R losses and heat, supporting higher system efficiency.
• Analog current sense diagnostics
• Provides a proportional sense output for load current measurement, enabling fault detection and predictive maintenance strategies.
• Protection and fault management
• Thermal shutdown, current limiting, short‑circuit/short‑to‑ground, open‑load detection, and undervoltage lockout help protect both the IC and the load, simplifying compliance with automotive safety goals at the system level.
• Automotive‑ready quality
• AEC‑Q100 qualification (per ST product family) and a junction temperature capability of −40°C to +150°C address harsh environmental requirements.
• Compact, production‑friendly package
• PowerSSO‑16 surface‑mount package eases assembly and supports dense PCB layouts in space‑constrained modules.

Specifications

• Manufacturer/Brand: STMicroelectronics
• Series: VIPower
• MPN: VND5T035AK‑E
• Function: Dual high‑side power switch (2 channels)
• RDS(on) (per channel): 35 mΩ (typ)
• Diagnostics: Analog current sense output
• Integrated protections: Thermal shutdown; current limiting; short‑circuit/short‑to‑ground; open‑load detection; undervoltage lockout
• Automotive use: Designed for 24 V systems
• Operating junction temperature: −40°C to +150°C
• Package: PowerSSO‑16
• Pin count: 16
• Mounting type: Surface mount
• Lifecycle status: Active
• Environmental/Compliance: AEC‑Q100 (automotive‑qualified, per ST product family); RoHS compliant (lead‑free, ECOPACK compliant)

Note: Electrical limits (e.g., supply range, current sense ratio, timing, and absolute maximum ratings) are not listed here. Refer to the official datasheet for exact limits and design margins.

Protections and diagnostics in practice

• Thermal shutdown
• The device autonomously turns off the affected channel under excessive junction temperature, helping prevent damage from overloads or insufficient heat dissipation.
• Current limiting
• Limits output current during overload or short conditions, reducing stress on wiring and upstream supplies.
• Short‑to‑ground protection
• Detects and mitigates hard faults to ground at the output, improving vehicle harness robustness and serviceability.
• Open‑load detection
• Identifies disconnected or failed loads. In lighting and actuator systems, this supports maintenance alerts and compliance with diagnostic requirements.
• Undervoltage lockout (UVLO)
• Helps ensure predictable behavior during cranking or supply dips typical of 24 V automotive systems by holding outputs off when supply is insufficient.
• Analog current sense
• Provides a proportional representation of the load current for each channel. Use this signal for closed‑loop control, fault logging, or on‑board analytics. See the datasheet for the sense ratio and recommended interface design.

Together, these features reduce external components and firmware complexity, enabling faster development and more informative diagnostics compared to discrete solutions.

Typical applications

• Automotive body and chassis electronics for 24 V systems (commercial vehicles, buses, off‑highway)
• Lamps and LED lighting loads (exterior and interior)
• Solenoids and valves (pneumatic and hydraulic actuators)
• Heaters and resistive loads (seat heaters, defoggers, auxiliary heaters)
• DC motors and inductive loads (locks, latches, pumps, fans)
• Industrial 24 V distribution and machine control where high‑side switching with diagnostics is beneficial

Design and integration notes

• Power path and thermal design
• Size copper areas and thermal paths to accommodate load current and the device’s thermal impedance. The low RDS(on) reduces dissipation, but thermal headroom is still essential for worst‑case loads and ambient conditions.
• Supply integrity and EMC
• Provide adequate supply decoupling and follow layout practices recommended by ST to limit conducted and radiated emissions, particularly when switching inductive loads.
• Inductive loads
• While the device integrates protections, always follow datasheet guidance for inductive energy handling and any external components required for safe demagnetization.
• Current sense interface
• Calibrate the analog current sense path in the system controller and design thresholds for open‑load and overload detection based on datasheet sense gain and tolerance.
• Channel independence
• Leverage the two channels for separate loads or parallel them only if explicitly allowed by the datasheet. If loads interact, ensure that protection and diagnostics remain valid for your architecture.
• Startup and transients
• UVLO behavior helps during cranking or brown‑outs. Validate system performance across expected supply transients and cold‑crank profiles typical of 24 V automotive systems.

Package, pinout, and mounting

• Package: PowerSSO‑16 (16‑lead)
• Mounting: Surface mount
• Board design
• Follow ST’s recommended land pattern, soldering profile, and thermal design notes in the datasheet. Observe clearance and creepage relevant to your supply and environmental category.

Note: For the exact pinout, functional pins (IN, OUT, CS/sense, GND/VCC), and recommended PCB layout constraints, consult the official STMicroelectronics datasheet.

Lifecycle, compliance, and quality

• Lifecycle status: Active (per STMicroelectronics product page)
• Automotive qualification: AEC‑Q100 (product family qualification, see ST details)
• Environmental: RoHS compliant; ECOPACK compliant (lead‑free)
• Operating junction temperature: −40°C to +150°C

These credentials make the STMicroelectronics VND5T035AK‑E suitable for new designs in commercial vehicles and industrial equipment requiring long‑term availability and automotive‑grade robustness.

Sourcing guidance

• Availability and pricing vary by region and distributor. For the most up‑to‑date status, consult authorized STMicroelectronics distributors or the ST product page.
• Because the VND5T035AK‑E is active and part of the VIPower family, designers can standardize on this platform across multiple load types with shared diagnostics and protection behavior.

If you require footprint‑compatible or functionally similar alternatives, review the broader VIPower portfolio from STMicroelectronics. No specific replacements are specified in the provided data.

Why choose the STMicroelectronics VND5T035AK‑E?

• Consolidates two protected high‑side channels into one compact IC
• Enables intelligent load management via analog current sense
• Reduces BOM and integration effort versus discrete FETs plus external protection
• Meets demanding automotive conditions with AEC‑Q100 pedigree and wide junction temperature range

These advantages help engineering teams shorten development time, meet compliance goals, and build more serviceable systems with robust diagnostics.

Frequently asked questions (FAQs)

• What type of device is the VND5T035AK‑E?

• A dual‑channel high‑side power switch for 24 V automotive and industrial applications.

• How many channels does it have?

• Two independent high‑side channels.

• What is the typical RDS(on)?

• 35 mΩ per channel (typical).

• Does it provide current diagnostics?

• Yes. It features an analog current sense output proportional to load current.

• What protections are integrated?

• Thermal shutdown, current limiting, short‑circuit/short‑to‑ground, open‑load detection, and undervoltage lockout.

• Is it suitable for inductive loads like motors and solenoids?

• Yes. It is intended for loads such as DC motors, solenoids, and valves. Follow datasheet guidance for inductive energy handling.

• Is it appropriate for LED and lamp loads?

• Yes. It can drive lamps and LED lighting loads within its electrical limits.

• What is the operating temperature range?

• −40°C to +150°C (junction).

• What package and pin count does it use?

• PowerSSO‑16 package with 16 pins; surface‑mount.

• Is it automotive‑qualified?

• Yes, AEC‑Q100 qualified (per ST product family information).

• Is it RoHS compliant?

• Yes, it is RoHS compliant and ECOPACK lead‑free.

• What is the exact current sense ratio or supply voltage range?

• Not specified here. Refer to the official STMicroelectronics datasheet for precise electrical characteristics.

Resources

• Product page: https://www.st.com/en/automotive-analog-and-power/vnd5t035ak-e.html
• Datasheet: https://www.st.com/resource/en/datasheet/vnd5t035ak-e.pdf

Disclaimer: Specifications not listed above are not specified in the provided data. Always consult the official STMicroelectronics datasheet and product documentation for absolute maximum ratings, detailed electrical characteristics, and design guidelines before finalizing your design.