Quad high side smart power solid state relay

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.

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



Description Version Size
DS8797 DS8797: Quad high-side smart power solid-state relay 6.0 1 MB
Description Version Size
AN4009 AN4009: STEVAL-IFP019V1: design with VNI4140K-32 quad high-side smart power solid-state relay ICs 1.0 1 MB

HW Model & CAD Libraries

HW Model & CAD Libraries
Description Version Size
VNI4140K-32 PSpice model 1.0 105 KB


Description Version Size
Brochure Power management guide 05.2016 7 MB
Intelligent power switches (IPS) SGIPS1015 1 MB


Evaluation Tool Software


型号 Package Packing Type Marketing Status Unit Price (US$) * Quantity ECCN (EU) ECCN (US) Country of Origin More info Order from ST Order from Distributors
VNI4140K-32 PowerSSO 24 Tube Active 2.26 1000 NEC EAR99 MALAYSIA MORE INFO 获取样片 Add to cart DISTRIBUTOR AVAILABILITY
VNI4140KTR-32 PowerSSO 24 Tape And Reel Active 2.26 1000 NEC EAR99 MALAYSIA MORE INFO 获取样片 Add to cart DISTRIBUTOR AVAILABILITY

(*) 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


型号 Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
VNI4140K-32 ActivePowerSSO 24IndustrialEcopack2
VNI4140KTR-32 ActivePowerSSO 24IndustrialEcopack2

(**) The Material Declaration forms available on st.com 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.