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LT3065 Recommended for New Designs
The LT3065 Series are micropower, low noise, low dropout voltage (LDO) linear regulators that operate over a 1.6V to 45V input voltage range. The devices...
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LT3065 on Analog.com

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LT3065 Internal Current Limit

		
	
				

			

									
					    Hiroyuki.D
					
							

            
            			
				
									
											
			
			
				
			
			
			    	
			                    
                
				                on Feb 3, 2024 
				
			
			
		

		
		                    	    

        	    
Thread Summary

                The user inquired about the meaning of ΔVout=-5% for the LT3065's internal current limit. The final answer explains that this parameter indicates the output voltage will not drop by more than 5% when the regulator reaches its internal current limit, exemplified by a drop from 0.6V to 0.54V at 900mA output current.
                                    

                    

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Category: Datasheet/Specs

    		        		            		    
Product Number:  LT3065 

    		        		    		    

		    		    
		    			

			    
Hello,


I'm a DFAE in Japan. Our customer evaluates LT3065 and has a question about Internal current limit. What's meaning ΔVout=-5%?


 


Regards,


Hiroyuki

			

			
									
		                             
                        

    

                                            
                 power management
                
                                                    
                 Datasheet/Specs
                
                                                    
                 LDO Linear Regulators
                
                                                    
                 LT3065
                
                                                    
                 Positive Linear Regulators (LDO)
                
                                
            

    
    
		


				
				        
        		

			
						
									
												
			
			
                        
                                    
                        
                                                    
                        
            
			            
						
						
			
			
			
			
		


        
        
        
    
					

			





















	

	

					



			


				
	









	
    
	

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    •  Analog Employees  
    
            
						
                            
            
            				
            
                on Feb 5, 2024 11:22 AM
            
            
						
			            		
    
		
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    Thanks for the post.  The specified Internal Current Limit you show above is the guaranteed minimum current the regulator can provide without the output voltage decreasing by more than 5%.  I show the behavior in the image below.   In my example, internal current limit will cause the output voltage to drop from 0.6V to 0.54 when the output current is 900mA.   
    

    

    sim ckt and result_2.png
    

      
    
			
    

		
			
	      

		
		
	
    
	
    
		
    
			
		
    
	
    
	
    
		
						
				
						
				
				
				
		
		
    
			
		
    
	
    

    

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