The ISL6146 represents a family of OR-ing MOSFET controllers capable of OR-ing voltages from 1V to 18V. Together with suitably sized N-channel power MOSFETs, the ISL6146 increases power distribution efficiency when replacing a power OR-ing diode in high current applications. It provides gate drive voltage for the MOSFET(s) with a fully integrated charge pump.

Features

• OR-ing Down to 1V and Up to 20V with ISL6146A, ISL6146B, ISL6146D and ISL6146E

• Programmable Voltage Compliant Operation with ISL6146C

• VIN Hot Swap Transient Protection Rating to +24V

• High Speed Comparator Provides Fast <0.3µs Turn-off in Response to Shorts on Sourcing Supply

• Fastest Reverse Current Fault Isolation with 6A Turn-off Current

• Very Smooth Switching Transition

• Internal Charge Pump to Drive N-channel MOSFET

• User Programmable VIN - VOUT Vth for Noise Immunity

• Open Drain FAULT Output with Delay

- Short between any two of the OR-ing FET Terminals

- GATE Voltage and Excessive FET VDS

- Power-Good Indicator (ISL6146C)

• MSOP and DFN Package Options

Applications

• N+1 Industrial and Telecom Power Distribution Systems

• Uninterruptable Power Supplies

• Low Voltage Processor and Memory

• Storage and Datacom Systems