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Quad high side smart power solid state relay
  • active Active

The VNI4140K-32 is a monolithic device made using STMicroelectronics VIPower technology, intended to drive four independent resistive, capacitive or inductive loads with one side connected to ground. Active current limitation avoids the system power supply dropping in case of shorted load. Built-in thermal shutdown protects the chip from overtemperature and short-circuit. In overload conditions, the channel turns OFF and back ON automatically so to maintain junction temperature between TTSD and TR. If this condition causes case temperature to reach TCSD, the overloaded channel is turned OFF and restarts only when case temperature has decreased down to TCR. In case of more than one channel in overload, restart of the overloaded channels is not simultaneous, in order to avoid high peak current from the supply. Non-overloaded channels continue operating normally. The open drain diagnostic outputs indicate overtemperature conditions.

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Errata Sheet
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Key Features

  • Output current: 1 A per channel
  • Shorted load protections
  • Junction overtemperature protection
  • Case overtemperature protection for thermal independence of the channels
  • Thermal case shutdown restart not simultaneous for the various channels
  • Protection against loss of ground
  • Current limitation
  • Undervoltage shutdown
  • Open drain diagnostic outputs
  • 3.3 V CMOS/TTL compatible inputs
  • Fast demagnetization of inductive loads
  • Conforms to IEC 61131-2
  • ESD according to IEC 61000-4-2 up to +/-25 KV

Design Resources


Technical Documentation

Product Specifications

Description Version Size
DS8797: Quad high-side smart power solid-state relay
6.0 1,115 KB

Application Notes

Description Version Size
AN4009: STEVAL-IFP019V1: design with VNI4140K-32 quad high-side smart power solid-state relay ICs
1.0 1,905 KB

Related Tools and Software

Related Tools and Software

Part Number Description
STEVAL-IFP019V1 Quad high-side smart-power solid-state relay demonstration board based on the VNI4140K-32

Sample & Buy

Part Number Marketing StatusPackagePacking TypeAutomotive GradeOrder From STUnit Price (US$)*
@ 1000
Distributor AvailabilityRoHS Compliance GradeDownload
Material Declaration**
VNI4140K-32ActivePowerSSO 24Tube_-2.26Distributor reported inventory date: 2016-02-29
Distributor NameRegionStockMin. order
ARROWOrder NowAMERICA4161225
VNI4140KTR-32ActivePowerSSO 24Tape And Reel_Free Samples2.26Distributor reported inventory date: 2016-02-29
Distributor NameRegionStockMin. order
ARROWOrder NowAMERICA10001000
ARROWOrder NowEUROPE150000

(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors
(**) The Material Declaration forms available on may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.