Part Number:DRV8860
I have an application that drives a bank of valves and has a few spare outputs. I needed a couple auxiliary LEDs under software control and rather than adding a separate I2C/SPI IO driver, tried using the spare outputs of the DRV8860. Unfortunately, the LEDs are so efficient they still produce visible light, albeit dim, with the 30uA Open-Load check current when the outputs turn OFF. The chip enable doesn't seem to cut off the current sinks either. The datasheet states the ENABLE input controls the output stage drivers and makes them high-Z when disabled; clearly it has no effect on the OL current sinks from my testing, however, the section describing the OL detection does not inform that the sinks are always ON. Can you confirm this?
I'm tempted to go to the DRV8860A that does not feature OL detection (and presumably does not contain the sinks but I haven't checked), however, I need the OL detection for the valve circuits so looks like I can't use the driver outputs for this otherwise very simple application.