SNOAA94 june   2023 LM74900-Q1 , LM74910-Q1

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1 LM749x0-Q1 Ideal Diode Controller Overview
  5. 2 Design 1: Automotive Reverse Battery Protection with Overvoltage, Undervoltage and Overcurrent Protection with Fault Output
  6. 3 Design 2: LM749x0-Q1 as Ideal Diode Controller with Current Monitoring, Overcurrent and Undervoltage Fault Indication
  7. 4 Design 3: LM749x0-Q1 as High Side Driver with Undervoltage, Overvoltage and Overcurrent Protection
  8. 5 Feature Comparison: LM749x0-Q1 as Ideal Diode FET and High Side Driver Topology
  9. 6 Design 4: Dual Supply OR-ing with Common Powerpath Disconnect Function
  10. 7 Design 5: LM749x0-Q1 as Priority Power MUX Controller
  11. 8 Feature Comparison: Dual OR-ing and Priority Power MUX Controller Topologies
  12. 9 Summary
  13. 10References

9 Summary

LM74900-Q1, LM74910-Q1 offers a complete automotive reverse battery input powerpath protection. The device offers adjustable overvoltage, undervoltage, and two level current protection to provide complete design flexibility to tune these features as per end application requirements. LM749x0-Q1 with dual gate drive architecture can address various MOSFET control topologies such as Ideal Diode FET only, High side switch controller only, Dual OR-ing with load disconnect, and Priority power muxing. This process enables system designers to use LM749x0-Q1 as a plug and place component to meet various automotive front end protection solutions with a common controller.