TPS25221

• 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)

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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.