Products Mentioned

LTC4234 Recommended for New Designs
The LTC4234 is an integrated solution for Hot Swap™ applications that allows a board to be safely inserted and removed from a live backplane. The part...
Datasheet
LTC4234 on Analog.com

LTC4233 Recommended for New Designs
The LTC4233 is an integrated solution for Hot Swap™ applications that allows a board to be safely inserted and removed from a live backplane. The part...
Datasheet
LTC4233 on Analog.com

Thread Details

  • State Verified Answer
  • Replies 1 reply
  • Subscribers 39 subscribers
  • Views 789 views
  • Users 0 members are here
Options 

        

            Post
             Go back to editing
        

    

    


    

    









		


















	
	
			
	
			
		
	
	
		

	    
	    
	    		
LTC4234 reverse current protection

		
	
				

			

									
					    maruthipc
					
							


			
				
									
											
			
			
				
    
			
			
			    	
			                    
                
				                on Jan 16, 2020 
				
			
			
		
    
		
		                     
				
        		
    
		    
		    		    
		    			
    
			    
    Hi team - 
    

     
    

    I am looking for 12V Hot swap solutions with below features .
    

      

    1. Forward current limiting
      2. 

    2. Reverse current block
      3. 

    3. Over voltage protection
      4. 

    4. Over current protection /short circuit protection .
      5. 

    5. Adjustable current limit  
      6. 

    

     
    

    I prefer to use integrated MOSFET solution with forward current limiting & reverse current block .
    

     
    

    Please let me know if LTC4233 /LTC4234 support reverse current block feature  , It’s not clear to me from the datasheet. 
    

     I would like to know if reverse current block feature is supported only with  external MOSFET Solutions .
    

     
    

    LTC4233: https://www.analog.com/media/en/technical-documentation/data-sheets/4233f.pdf
    

    LTC4234: https://www.analog.com/media/en/technical-documentation/data-sheets/4234fa.pdf
    
			
    
			
									
		                             
                        

    
    
                                            
                 power management
                
                                                    
                 LTC4233
                
                                                    
                 Low Voltage Hot Swap Controllers
                
                                                    
                 Hot Swap Controllers
                
                                                    
                 LTc4234
                
                                        
                                            
                
                
                                
                    Show More
            
    
    
    
		
    

				
				        
        		
    
			
						
									
												
			
			
                        
                                    
                        
                                                    
                        
            
			            
						
						
			
			
			
			
		
    

        
        
        
    
					
    
			
    


    
















    
	
    
	
    
					



			


				
	









	
      
	

    • 
	
      



	
			
		
	



      
	
      
		
      
							
					
      
		
      
			
				
									
							        
			
			
			
      •  Analog Employees  
      
            
						
                            
            
            				
            
                on Jan 28, 2020 11:30 AM
            
            
						
			            		
      
		
										0
					
	
      

		
		
      
		
      
                                
                                                            
      
					
      Inside LTC4233/34, there is one MOSFET. This MOSFET will do forward current limiting. This will not block the reverse current as body diode of the MOSFET will conduct current in reverse direction. You will have to use an ideal diode part (LTC4410,LTC4412,LTC4376) to achieve reverse current blocking functionality. You can also check LTC4368 which can do forward and reverse over current blocking.
      
			
      

		
			
	      

		
		
	
      
	
      
		
      
			
		
      
	
      
	
      
		
						
						
						
				
				
				
		
		
      
			
		
      
	
      

      

      •