TPS25221DBVR

產品資訊

0.275-2.7A adj. ILIMIT, 2.5-5.5V, 70mΩ USB power switch, active-high, reverse blocking

2.5-V to 5.5-V V OPERATING Pin-to-Pin with TPS2553 2-A I CONT_MAX 0.275-A to 2.7-A Adjustable I LIMIT (±6.5% at 1.7 A) 70-mΩ (typical) R ON 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)

The TPS25221 is intended for applications where heavy capacitive loads and short circuits may be encountered. The programmable current-limit threshold maybe set between 275 mA and 2.7 A (typical) using an external resistor. I LIMIT 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 I LIMIT the internal FET enters constant current mode in order to keep I LOAD at or below I LIMIT . The FAULT output will assert low during over-current conditions after the built in de-glitch time.