LM74202-Q1 40V 2.2A ideal diode with integrated FET | TI.com

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40V 2.2A ideal diode with integrated FET



The LM74202-Q1 device is a compact, feature-rich 40-V integrated ideal diode with a full suite of protection features. The wide supply input range allows control of 12-V automotive battery driven applications. The device withstands and protects the loads from positive and negative supply voltages up to ±40 V. Load, source and device protection are provided with many programmable features including overcurrent, inrush current control, overvoltage and undervoltage thresholds. The internal robust protection control blocks along with the 40-V rating of the device simplifies the system design for ISO standard pulse tesing.

A shutdown pin provides external control for enabling and disabling the internal FETs and places the device in a low current shutdown mode. For system status monitoring and downstream load control, the device provides fault output and precise current monitor output. The MODE pin allows flexibility to configure the device between the three current-limiting fault responses (circuit breaker, latch off, and auto-retry modes). The device monitors V(IN) and V(OUT) to provide reverse current blocking when V(IN) < (V(OUT)-10mV). This function protects system bus from overvoltages during output short to battery faults and also helps in voltage holdup requirements during power fail and brownout conditions.

The device is available in a 5 mm × 4.4 mm 16-pin HTSSOP and is fully specified over a –40°C to +125°C temperature range.


  • AEC-Q100 qualified for automotive applications
    • Temperature grade 1: –40°C ≤ TA ≤ +125°C
    • AEC-Q100-012 short circuit reliability Grade A
    • HBM ESD classification level 2
    • CDM ESD classification level C6
  • 4.2-V to 40-V operating voltage, 42-V maximum
  • Integrated reverse input polarity protection down to –40 V
  • Integrated back-to-back MOSFETs with 150 mΩ total RON
  • Transient immunity up-to 55 V
  • 0.1-A to 2.23-A adjustable current limit
    (±5% accuracy at 1 A)
  • Load protection during ISO7637 and ISO16750-2 testing
  • Short to battery and short to ground protection
  • Reverse current blocking for protection from output short to battery
  • IMON current indicator output (±8.5% accuracy)
  • Low quiescent current (285 µA in operating, 16 µA in shutdown)
  • Adjustable UVLO, OVP cut off, inrush current control
  • Selectable current-limiting fault response options (auto-retry, latch off, CB modes)
  • Available in easy to use 16-Pin HTSSOP package

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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)
LM74202-Q1 Order now 4.2     -42     40     42     0.3     0.4     Internal             Integrated FET, Analog Current Monitor, Adjustable Current Limit
ON/OFF Control    
-40 to 125     HTSSOP | 16     1.39 | 1ku           Automotive     16HTSSOP: 32 mm2: 6.4 x 5 (HTSSOP | 16)     1      
LM5050-1-Q1 Order now 5     -0.3     75     100     0.4     0.79     External     31     41     2.8     2.8     AUX Input
Linear Control    
-40 to 125
-40 to 150    
SOT-23-THIN | 6     1.00 | 1ku         -28 /-41     EVM
Simulation Model    
Automotive     6SOT-23-THIN: 5 mm2: 1.6 x 2.9 (SOT-23-THIN | 6)     1     14    
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    
LM74700-Q1 Order now 3.2     -65     65     65     0.08     0.13     External     11000         2.3     Linear Control     -40 to 125     SOT-23 | 6     0.71 | 1ku       -11       Automotive     6SOT-23: 5 mm2: 1.6 x 2.9 (SOT-23 | 6)     1      
LM76202-Q1 Order now 4.2