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ADuM6020 Recommended for New Designs
The ADuM6020/ADuM60281 are isoPower®, integrated, isolated dc-to-dc converters. Based on the Analog Devices, Inc., iCoupler® technology, these dc-to...
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ADuM6020 on Analog.com

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ADUM6020 Output Supply Current

		
	
				

			

									
					    serap
					
							

            
            			
				
									
											
			
			
				
    
			
			
			    	
			                    
                
				                on Apr 28, 2021 
				
			
			
		
    
		
		                     
				
        		
    
		    
		    		    
		    			
    
			    
    Hi, 
    

    I am planning to use ADUM6020-5BRIZ for Isolated CAN interface implementation. I am confused about the Output Supply Current of the  ADUM6020-5BRIZ. 
    

    In the datasheet it is stated as given below. 
    

    


    
Parameter
Symbol
Min
Test Conditions/Comments

    

    
Output Supply Current
IISO (MAX)
50mA
4.75 V < VISO < 5.25 V

    

    
100mA
4.5 V < VISO < 5.25 V

    
    

    

    I will use an Isolated CAN Transceiver which requires 4.75V(min )- 5.25V(max) supply voltage and at least 73mA supply current.
    

    For ADUM6020-5BRIZ, which "Output Supply Current" value (50mA or 100mA?), I should take into account. Since  4.75V(min )- 5.25V(max) value is also in the range of 4.5 V < VISO < 5.25 V, is 100mA value valid for my case?
    

    Thanks in advance
    

    Best regards.
    
			
    
			
									
		                             
                        

    
    
                                            
                 isopower
                
                                                    
                 Digital Isolation Technology
                
                                                    
                 current consumption
                
                                                    
                 ADuM6020
                
                                
            
    
    
    
		
    

				
				        
        		
    
			
						
									
												
			
			
                        
                                    
                        
                        
                        
            
			            
						
						
			
			
			
			
		
    

        
        
        
    
					
    
			
    


    
















    
	
    
	
    
					



			


				
	









	
      
	

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      •  Analog Employees  
      
            
						
                            
            
            				
            
                on Apr 30, 2021 6:53 AM
            
            
						
			            		
      
		
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      Hello,
      

      the specified output current for your scenario is NOT covered by (all possible) ADUM602 you might purchase. VISO is derating for larger Iout, as can be seen in the diagram (typical) as well:
      

       
      

      This shows a typical part where 4.75V und 73mA will be no problem. But over all tolerances of process parameters there will be parts which might go down to 4.5V at VISO when 100mA are required. Especially if your input supply VDDP is at the low (specified) end with 4.5V.
      

      This is how you should interpret our sepcification:
      

      If you need a minimum of 4.75V at isolated Supply: We can deliver minimum (worst case) 50mA
      

      If you can accept a minimum of 4.5V at isolated Supply: Part will deliver minimum(worst case) 100mA.
      

      For sure (many) typical parts will have no problem, but I have no clue how many will deliver 73mA and keep VISO above the required 4.75V.
      

      The specification has to keep VDDP,min of 4.5V in mind as well.
      
			
      

		
			
	      

		
		
	
      
	
      
		
      
			
		
      
	
      
	
      
		
						
				
						
						
				
				
		
		
      
			
		
      
	
      

      

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