STMicroelectronics VND5T100LASTR-E

Overview

VND5T100LASTR-E from STMicroelectronics is a dual-channel high-side driver IC designed for 24 V automotive power distribution, integrating analog current sense and latch-off protection. It delivers 22 A typical current limiting per channel, 100 mΩ on-state resistance at 25 °C, and operates across 8–36 V supply range. Used in LED lighting control, solenoid actuation, and body electronics where precise load monitoring and fault resilience are critical.

For engineers reviewing the VND5T100LASTR-E datasheet, VND5T100LASTR-E pinout, VND5T100LASTR-E application, or VND5T100LASTR-E equivalent, key selection criteria include its AEC-Q100 qualification, proportional current sense accuracy across 12 mA–6 A, thermal shutdown latch behavior, and FR_Stby-controlled reset timing (2–24 µs).

Technical Context

This device implements two independent VIPower MOSFET high-side switches with integrated current-sense amplifiers delivering I_SENSE = I_OUT/K, where K varies from 833 to 1784 depending on load current and temperature. Each channel features active overcurrent limitation, open-load detection in off-state, short-to-VCC detection, and thermal shutdown with 150–200 °C trip threshold and 7 °C hysteresis.

The logic interface uses CMOS-compatible inputs with 0.25 V hysteresis and 3.0 V compatibility; the FR_Stby pin enables both standby mode entry (all inputs + FR_Stby low) and asynchronous latch-off reset (low pulse). Protection includes undervoltage shutdown (5 V typ.), overvoltage clamp (58–70 V), and ESD robustness up to 5 kV on OUT pins.

Key Specifications

Pinout & Package

Package: PowerSSO-12 (exposed tab connected to VCC) - optimized for high-power dissipation in automotive under-hood environments with 6 °C/W junction-to-case thermal resistance.

Key Features

Applications

Equivalent & Alternatives

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

Compared with VND5T100LASTR-E, the LAJ-E offers identical functionality in the same thermally optimized package but differs only in reel configuration, while the TPS2H160-Q1 sacrifices analog current sensing and dual-channel integration for higher R_ON and simplified fault signaling-making it unsuitable for LED dimming or solenoid current profiling.

Availability

VND5T100LASTR-E is available at Aetrix Electronics and suitable for automotive body electronics, LED lighting control, and engine management systems requiring stable component supply, AEC-Q100 compliance, and long-term lifecycle support.

Supply support for VND5T100LASTR-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 broad manufacturing scale and automotive qualification expertise.

The VND5T series belongs to ST's VIPower high-side driver product line, engineered specifically for 12 V/24 V automotive power distribution with integrated diagnostics, protection, and AEC-Q100 Grade 0 reliability.

FAQ

What is the function of the FR_Stby pin beyond reset?

The FR_Stby pin serves two distinct roles: first, a low pulse (≥2 µs) resets latch-off conditions caused by overload or thermal shutdown; second, holding FR_Stby low simultaneously with all INx inputs forces the device into ultra-low-power standby mode (<2 µA total supply current), disabling both outputs and current sense functionality until released.

Can VND5T100LASTR-E drive inductive loads without external flyback diodes?

No. While the device integrates an active VCC clamp to absorb energy during turn-off, it does not replace external freewheeling diodes across inductive loads. The internal clamp handles only low-energy spikes (e.g., ISO 7637-2 Pulse 1); for solenoids or relays, a Schottky diode rated ≥30 V and ≥25 A must be placed from OUT to VCC to prevent destructive voltage overshoot during demagnetization.

How does the current sense accuracy vary across temperature and current range?

Current sense ratio (K = I_OUT/I_SENSE) ranges from 833 (at 12 mA) to 1784 (at 6 A), with drift bounded by ±30% at lowest current and ±4% at 6 A across -40 to +150 °C. This enables <±5% absolute current measurement error at 1 A using a 3.9 kΩ sense resistor and standard 12-bit ADC, validated per DS9126 Rev 7 Table 9.

Is the PowerSSO-12 package RoHS and REACH compliant?

Yes. VND5T100LASTR-E complies with EU Directive 2002/95/EC (RoHS) and REACH SVHC regulations, confirmed in ST's official material declaration (Doc ID: CD002947). The PowerSSO-12 package uses lead-free matte tin plating and halogen-free molding compound, with full traceability to wafer fab and assembly sites.