LM74610-Q1 Zero iq reverse polarity protection smart diode controller | TI.com

LM74610-Q1 (ACTIVE) Zero iq reverse polarity protection smart diode controller


Recommended alternative parts

  • LM74700-Q1  -  For always-on reverse polarity protection, please see the LM74700-Q1 ideal diode controller.


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.


  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With the Following Results:
    • Exceeds HBM ESD Classification Level 2
    • Device CDM ESD Classification Level C4B
  • Maximum reverse voltage of 45 V
  • No Positive Voltage limitation to Anode Terminal
  • Charge Pump Gate Driver for External N-Channel
  • Lower Power Dissipation than Schottky
    Diode/PFET Solutions
  • Low Reverse Leakage Current
  • Zero IQ
  • Fast 2-µs Response to Reverse Polarity
  • –40°C to +125°C Operating Ambient Temperature
  • Can be Used in OR-ing Applications
  • Meets CISPR25 EMI Specification
  • Meets Automotive ISO7637 Transient
    Requirements with a Suitable TVS Diode
  • No Peak Current Limit


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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)
LM74610-Q1 Order now 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     Calculation Tool
Reference Design
Simulation Model    
Automotive     8VSSOP: 15 mm2: 4.9 x 3 (VSSOP | 8)     1     2.5