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LT3045 Recommended for New Designs
The LT3045 is a high performance low dropout linear regulator featuring LTC’s ultralow noise and ultrahigh PSRR architecture for powering noise sensitive...
Datasheet
LT3045 on Analog.com

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LT3045 OUTS Pin

		
	
				

			

									
					    Purvi
					
							

            
            			
				
									
											
			
			
				
    
			
			
			    	
			                    
                
				                on Sep 28, 2022 
				
			
			
		
    
		
		                    	    
    
        	    
    Thread Summary
    
                The user inquires about connecting the OUTS pin of the LT3045 to the load side for remote sensing, including the addition of a PCB trace, Rsense resistor, and connector. The final answer confirms that this should be fine for better load regulation, emphasizing adherence to the recommended layout and ground connections in the datasheet. The accompanying answer clarifies that the datasheet recommends direct connections to minimize inductance effects, but the user is seeking to kelvin sense at the load despite this advice.
                        	    
    
                
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    Category: Hardware
    
    		        		            		    
    Product Number:  LT3045 
    
    		        		    		    
    
		    		    
		    			
    
			    
    Hi ADI Team,
    

    Can you help us with below query?
    

    For remote sensing, Can we connect “OUTS” Pin of LT3045 at Load Side ? Will addition of PCB Trace, Rsense Resistor (For current consumption measurement) and connector on path between OUT and OUTS create an issue?
    

      
    

    Regards,
    

    Purvi
    
			
    
			
									
		                             
                        

    
    
                                            
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      •  Analog Employees  
      
            
						
                            
            
            				
            
                on Sep 28, 2022 11:43 AM
            
            
						
			            		
      
		
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      Hi  ,
      

      

      It is advised for the OUTS pin to be kelvin connected to the output cap and load side for better load regulation. So I think that should be fine. Please take note also of the recommended layout and ground connection stated in the pin functions section of the LT3045 datasheet.

      Thanks,
      

      Noel
      
			
      

		
			
	      

		
		
	
      
	
      
		
      
			
		
      
	
      
	
      
		
						
						
						
				
				
				
		
		
      
			
		
      
	
      

      

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                on Jan 22, 2025 4:02 PM
            
            
												
						in reply to ntenorio
					
										
			            		
        
		
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        Hi  , I just want to clarify your answer. The original question essentially is asking if we can ignore this recommendation in the datasheet:

        "To that end, as shown in Figure 3, minimize the effects of PCB trace and solder inductance by tying the OUTS pin directly to COUT and the GND side of CSET directly to the GND side of COUT, as well as keep the GND sides of CIN and COUT reasonably close."
        

        I would also technically like to kelvin sense at the load, but the datasheet says not to do that.
        
			
        

		
			
	      

		
		
	
        
	
        
		
        
			
		
        
	
        
	
        
		
						
						
				
				
				
				
		
		
        
			
		
        
	
        

        

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