TPS25221 Power Distribution Switches

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.