Low voltage detector

摘要

An apparatus includes a voltage monitoring device to generate a brownout indication signal in response to a change in a power supply voltage. The apparatus also includes a mode control device to control a temporal response of the voltage monitoring device to the change in the power supply voltage based, at least in part, on a voltage level of the power supply voltage.

主权项

1. An apparatus comprising:
a voltage monitoring device to generate a brownout indication; and a mode control device configured to receive a sampled power supply voltage, and further configured to adjust a temporal response of the voltage monitoring device from a first mode to a second mode in response to the sampled power supply voltage dropping below a first threshold voltage level, the temporal response being a response time of the voltage monitoring device to a change in the power supply voltage, wherein the voltage monitoring device has a faster temporal response in the second mode as compared to the first mode, and wherein the voltage monitoring device is configured to generate the brownout indication signal based on the mode of the voltage monitoring device and in response to sampled power supply voltage dropping below a second threshold voltage level.