• State Not Answered
  • Replies 1 reply
  • Subscribers 3 subscribers
  • Views 81 views
  • Users 0 members are here
Options
Related 

        

            Post
             Go back to editing
        

    

    


    

    









		












	
	
			
	
			
		
	
	
		

		
LTC2943



		

			

									
					    Alexander Budnik
					
							

			
				
									
											
			
			
				
    
			
			
			    	
			                    
                
				                on Jun 16, 2020 
				
			
			
		
    

				
		
    
		    		    
		    
		    	
			
    Hello.
    My application has a minimum consumption current of 600uA and a maximum consumption current of 70mA.
    The maximum charge current is 1A.
    Two series connections of lithium-ion batteries.
    3400mAh capacity and 8.4V voltage.
    

    Is LTC2943 suitable for my application and
    Is it correct for me to calculate RSENSE?
    
								
    

				
				
		
    
			
						
									
									
						
						
			
			
			
			
		
    

        
        

					
    
			
    


    


	
    
		
	
    















    
	
    
	
    
					



			








	
	
	
	



Parents
	
      
	

    • 
	
      



	
		
	
	



      
	
      
		
      
							
					
      
		
      
			
													0
							
			
				
									
							        
			
			
			
      •  Super User  
      
            
			                            
                        
                on Jun 26, 2020 7:18 AM
            
            
					
      
	
      

		
		
      
					
      Alexander Budnik said:
      Is LTC2943 suitable for my application and
      Is it correct for me to calculate RSENSE?
      

      - Yes, the LTC2943 is suitable when you want to count the accu-coulombs
      - yes, you should calculate Rsense appropriately as this determines maximum current, current resolution and errors.
      

      One practical hint - not to be overlooked:
      The absolute maximum difference voltage between the sense-pins is +/-0.3V !!
      Every short circuit or severe overcurrent will blow the IC (and the sense resistor itself)! 
      So I would reccomend, to place a fast overcurrent limiter after the LTC2943.
      
			
      

		
		
		
		
	
      
	
      
		
      
			
		
      
	
      
	
      
		
						
						
				
						
				
				
		
		
      
			
		
      
	
      

      

      • 

	
    



Reply

      


    • 
	
      



	
		
	
	



      
	
      
		
      
							
					
      
		
      
			
													0
							
			
				
									
							        
			
			
			
      •  Super User  
      
            
			                            
                        
                on Jun 26, 2020 7:18 AM
            
            
					
      
	
      

		
		
      
					
      Alexander Budnik said:
      Is LTC2943 suitable for my application and
      Is it correct for me to calculate RSENSE?
      

      - Yes, the LTC2943 is suitable when you want to count the accu-coulombs
      - yes, you should calculate Rsense appropriately as this determines maximum current, current resolution and errors.
      

      One practical hint - not to be overlooked:
      The absolute maximum difference voltage between the sense-pins is +/-0.3V !!
      Every short circuit or severe overcurrent will blow the IC (and the sense resistor itself)! 
      So I would reccomend, to place a fast overcurrent limiter after the LTC2943.
      
			
      

		
		
		
		
	
      
	
      
		
      
			
		
      
	
      
	
      
		
						
						
				
						
				
				
		
		
      
			
		
      
	
      

      

      • 


    


Children
	
    No Data