Texas Instruments TPS25221 Power Distribution Switches are intended for applications where heavy capacitive loads and short circuits may be encountered. An external resistor may set the programmable current-limit threshold between 275mA and 2.7A (typical). ILIMIT accuracy as tight as ±6% can be achieved at the higher current-limit settings. The power-switch rise and fall times are controlled to minimize current surges during turn-on and turn-off. When a load attempts to draw current exceeding the programmed ILIMIT, the internal FET enters a constant current mode to keep ILOAD at or below ILIMIT. The FAULT output and the Texas Instruments TPS25221 will assert low during over-current conditions after the built-in de-glitch time.
