Wuxi Maxinmicro MX74610T

The MX74610 is a controller device that can be used with an N-Channel MOSFET in a reverse polarity protection circuitry. It is designed to drive an external MOSFET to emulate an ideal diode rectifier when connected in series with a power source. A unique advantage of this scheme is that it is not referenced to ground and thus has Zero Iq. The MX74610 controller provides a gate drive for an external N-Channel MOSFET and a fast response internal comparator to discharge the MOSFET Gate in the event of reverse polarity. This fast pull-down feature limits the amount and duration of reverse current flow if opposite polarity is sensed.

Most systems in industrial applications require fast response reverse polarity protection at the input stage. The MX74610 is a zero Iq controller that is combined with an external N-channel MOSFET to replace a diode or PFET reverse polarity solution in power systems. The voltage across the MOSFET source and drain is constantly monitored by the MX74610 ANODE and CATHODE pins. An internal charge pump is used to provide the GATE drive for the external MOSFET. This stored energy is used to drive the gate of MOSFET. The voltage drop depends on the RDSON of a particular MOSFET in use, which is significantly smaller than a PFET. The MX74610 has no ground reference which makes it identical to a diode.

• Maximum reverse voltage of 60V
• No Positive Voltage limitation to Anode Terminal
• Charge Pump Gate Driver for External N-Channel MOSFET Lower Power Dissipation than Schottky Diode / PFET Solutions
• Low Reverse Leakage Current
• Fast 2μs Response to Reverse Polarity
• -40°C to +125°C Operating Ambient Temperature
• Can be Used in OR-ing Applications
• No Peak Current Limit
• 6-Pin SOT23-6L and 8-pin MSOP8

• Infotainment Systems
• Power Tools (Industrial)
• Transmission Control Unit (TCU)
• Battery OR-ing Applications
• PV BOX