The LM74610-Q1 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 LM74610-Q1 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. The device design also meets CISPR25 Class 5 EMI specifications and automotive ISO7637 transient requirements with a suitable TVS diode.
|Part number||Order||Vin (Min) (V)||Vabsmin (Min) (V)||Vin (Max) (V)||Vabsmax (Max) (V)||Iq (Typ) (mA)||Iq (Max) (mA)||FET||IGate source (Typ) (uA)||IGate source (Max) (uA)||IGate sink (Typ) (mA)||IGate pulsed (Typ) (A)||Features||Operating temperature range (C)||Package Group||Approx. price (US$)||IReverse (Typ) (uA)||VSense reverse (Typ) (mV)||Design support||Rating||Package size: mm2:W x L (PKG)||Channel(s) controlled (#)||VGS (Max) (V)|
||0.48||-45||42||42||0||0||External||10||9.4||0.01||0.1||Linear Control||-40 to 125||VSSOP | 8||0.90 | 1ku||110||20||
|Automotive||8VSSOP: 15 mm2: 4.9 x 3 (VSSOP | 8)||1||2.5|