7.3.11 Short-Circuit Output Protection

The TLV320AIC3109-Q1 includes programmable short-circuit protection for the high-power output drivers for maximum flexibility in a given application. By default, if shorted, these output drivers automatically limit the maximum amount of current that can be sourced to or sunk from a load, thereby protecting the device from an overcurrent condition. In this mode, register 95, page 0 can be read to determine whether the device is in short-circuit protection or not, and then the device can be programmed to power-down the output drivers if needed. However, the device includes further capability to power-down an output driver automatically whenever the driver goes into short-circuit protection without requiring user intervention. In this case, the output driver remains in a power-down condition until specifically programmed to power down and then power back up again to clear the short-circuit flag.