ISL6174

This IC targets dual voltage hot swap applications across the +2. 5V to +3. 3V (nominal) bias supply voltage range with a second lower voltage rail down to less than 1V where a circuit breaker response to an over current event is preferred. It features a charge pump for driving external N-Channel MOSFETs, accurate programmable circuit breaker current thresholds and delay output undervoltage monitoring and reporting and adjustable soft-start. The circuit breaker current level (I_CB) for each rail is set by two external resistors, and for each rail a delay (t_CB) is set by an external capacitor on the TCB pin. After t_CB has expired, the IC then quickly pulls down the associated GATE(s) output turning off its external FET(s).