12x Low-Side Relay driver with constant holding current | E520.02 (*Driver IC)

The Elmos Driver ICs E520.02 control twelve lowside switched relays. The ICs autonomously generate a constant relay holding current in a wide supply voltage range. A special circuit generates a PWM duty-cycle which automatically compensates changes in the supply voltage. So, there is no need for an external controller to observe the supply voltage and adapt the PWM duty-cycle for a constant relay holding current.
The IC is configured and controlled over an SPI interface. All outputs are short circuit and over-temperature protected with error read back capability. Switch monitoring with control lamp combination with only 1 wire and output is possible. For fast time-to-market Elmos provides demo-boards as well as design-in support.