Texas Instruments TPS25221DBVT Power Distribution Switches are intended for applications where heavy capacitive loads and short circuits may be encountered. The programmable current-limit threshold may be set between 275mA and 2.7A (typical) using an external resistor. ILIMIT accuracy as tight as ±6% can be achieved at the higher current-limit settings. 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 in order to keep ILOAD at or below ILIMIT. The FAULT output will assert low during over-current conditions after the built-in de-glitch time.
Feature
2.5-V to 5.5-V VOPERATING
Pin-to-Pin with TPS2553
2-A ICONT_MAX
0.275-A to 2.7-A Adjustable ILIMIT (±6.5% at 1.7 A)
70-mΩ (typical) RON
1.5-μs Short Circuit Response
8-ms Fault Reporting Deglitch
Reverse Current Blocking (when disabled)
Built-In Soft Start
UL 60950 and UL 62368 Recognition
15-kV ESD Protection per IEC 61000-4-2 (with external capacitance)