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Quad power management supervisors

Texas Instruments (TI) has introduced a family of quad SVSs (supply voltage supervisors) with programmable delay and watchdog timer, which minimise board space in new multi-rail power supply designs. The TPS386000, TPS386020, TPS386040, and TPS386060 supervisors can monitor four power rails that are greater than 0.4V with a threshold accuracy of 0.25 percent. This accuracy combined with an integrated watchdog timer provides system reliability for processor-based applications. The devices offer an independent programmable delay input for each supervisor channel, which can be set from 1.25ms to 10 seconds for power supply sequencing. The devices operate with a low quiescent current of 12uA, which can help minimise system power consumption. They are designed for applications such as telecom infrastructure, networking, server/storage, industrial and analogue sequencing applications. Several options are offered to give designers the flexibility to meet their system’s power requirements. They include options for open-drain, push-pull, active high and active low reset outputs.