MPU SUPERVISOR DUAL 28V TQFN-16
The MAX16025–MAX16030 are dual-/triple-/quad-volt- age monitors and sequencers that are offered in a small TQFN package. These devices offer enormous design flexibility as they allow fixed and adjustable thresholds to be selected through logic inputs and pro- vide sequence timing through small external capaci- tors. These versatile devices are ideal for use in a wide variety of multivoltage applications. As the voltage at each monitored input exceeds its respective threshold, its corresponding output goes high after a propagation delay or a capacitor-set time delay. When a voltage falls below its threshold, its respective output goes low after a propagation delay. Each detector circuit also includes its own enable input, allowing the power-good outputs to be shut off inde- pendently. The independent output for each detector is available with push-pull or open-drain configuration with the open-drain version capable of supporting volt- ages up to 28V, thereby allowing them to interface to shutdown and enable inputs of various DC-DC regula- tors. Each detector can operate independently as four separate supervisory circuits or can be daisy-chained to provide controlled power-supply sequencing. The MAX16025–MAX16030 also include a reset func- tion that deasserts only after all of the independently monitored voltages exceed their threshold. The reset timeout is internally fixed or can be adjusted externally. These devices are offered in a 4mm x 4mm TQFN package and are fully specified from -40°C to +125°C.