The VNI4140K from STMicroelectronics is a monolithic solid-state relay which is intended to drive four independent resistive or inductive loads with one side connected to ground. Active current limitation eliminates the risk of dropping the system power supply in the event of a shorted load. The device, which is made using STMicroelectronics’ VIPower technology, offers built-in thermal shut-down protection circuitry. Open-drain diagnostic outputs indicate when an over-temperature condition has occurred. The device’s maximum supply-voltage rating is 41V.
- 0.7A output current per channel
- 80mΩ on-resistance
- Up to ±25kV ESD protection