• State Verified Answer
  • Replies 1 reply
  • Subscribers 39 subscribers
  • Views 1107 views
  • Users 0 members are here
Options
Related 

        

            Post
             Go back to editing
        

    

    


    

    









		












	
	
			
	
			
		
	
	
		

		
Question about LTC3118 Single Power Supply



		

			

									
					    Kazu
					
							

			
				
									
											
			
			
				
    
			
			
			    	
			                    
                
				                on Aug 4, 2018 
				
			
			
		
    

				
		
    
		    		    
		    
		    	
			
    Hi
    
 
    I have tested the LTC3118 by a single power supply from 3.6V to 7.2V, the output voltage is 5V.  I have used the Vin1 pin as the voltage source for the converter. My question is that where the unused Vin2 pin and the Run2 pin are connected to. I have connected the Vin2 to GND and the Run2 to the Run1(=Vin1), is it no problem?
    
 
    Regards,
    
 
    Kazu
    
								
    

				
				
		
    
			
						
									
									
						
						
			
			
			
			
		
    

        
        

					
    
			
    


    


	















    
	
    
	
    
					



			








	
	
	
	



Parents
	
      
	

    • 
	
      



	
			
		
	



      
	
      
		
      
							
					
      
		
      
			
													0
							
			
				
									
							        
			
			
			
      •  Analog Employees  
      
            
			                            
                        
                on Aug 7, 2018 12:42 AM
            
            
					
      
	
      

		
		
      
					
      Hi ,
      
 
      If a second input source Vin2 is not used , VIN2 and RUN2 pin can be grounded. Connecting RUN2 to RUN1 will not create any problem however it might always enable few of the internal circuitries(such as RUN2 comparator) of the part. This will make it less efficient.
      
 
      If dual input source is not required for the application, LTC3119 could be a better part for the specification in terms of efficiency, power loss, adjustable switching frequency etc.  
      
 
       
      
 
      Thanks
      
 
      Anisha
      
			
      

		
		
		
		
	
      
	
      
		
      
			
		
      
	
      
	
      
		
						
				
						
						
				
				
		
		
      
			
		
      
	
      

      

      • 

	
    



Reply

      


    • 
	
      



	
			
		
	



      
	
      
		
      
							
					
      
		
      
			
													0
							
			
				
									
							        
			
			
			
      •  Analog Employees  
      
            
			                            
                        
                on Aug 7, 2018 12:42 AM
            
            
					
      
	
      

		
		
      
					
      Hi ,
      
 
      If a second input source Vin2 is not used , VIN2 and RUN2 pin can be grounded. Connecting RUN2 to RUN1 will not create any problem however it might always enable few of the internal circuitries(such as RUN2 comparator) of the part. This will make it less efficient.
      
 
      If dual input source is not required for the application, LTC3119 could be a better part for the specification in terms of efficiency, power loss, adjustable switching frequency etc.  
      
 
       
      
 
      Thanks
      
 
      Anisha
      
			
      

		
		
		
		
	
      
	
      
		
      
			
		
      
	
      
	
      
		
						
				
						
						
				
				
		
		
      
			
		
      
	
      

      

      • 


    


Children
	
    No Data