Products Mentioned

LTC3315A Recommended for New Designs
The LTC3315A features dual 2A monolithic synchronous step-down converters operating from a 2.25V to 5.5V input supply in one package for space-constrained...
Datasheet
LTC3315A on Analog.com

LTC3315B Recommended for New Designs
The LTC3315B features dual 2A monolithic synchronous step-down converters operating from a 2.25V to 5.5V input supply in one package for space-constrained...
Datasheet
LTC3315B on Analog.com

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LTC3315A, LTC3315B MODE/SYNC select mode

		
	
				

			

									
					    Sanchogus
					
							

            
            			
				
									
											
			
			
				
    
			
			
			    	
			                    
                
				                on Apr 6, 2021 
				
			
			
		
    
		
		                     
				
        		
    
		    
		    		    
		    			
    
			    
    Hello. Can I switch mode LTC3315 when it working?

    When my device in wait-mode using burst mode and dynamically set pulse-skip or forced continuous mode. And how much time need to set new mode?
    
			
    
			
									
		                             
                        

    
    
                                            
                 LTC3315B
                
                                                    
                 MODE/SYNC
                
                                                    
                 mode selection
                
                                                    
                 LTC3315A
                
                                                    
                 LTC3315
                
                                        
                                            
                
                
                                        
                                            
                
                
                                
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      •  Analog Employees  
      
            
						
                            
            
            				
            
                on Apr 6, 2021 9:35 AM
            
            
						
			            		
      
		
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      The LTC3315 was not specifically designed to switch modes while operating therefore we do not recommend to do this. However we also did not observe any issues switching modes when operating during evaluation at room temperature. Full testing under all conditions has not been done for switching modes when operating. 
      

      I do not know the worst case time to accurately switch modes. Once in FC mode from burst mode it can take the regulator 3 to 4 clock cycles to adjust from a high output ripple. This can be evaluated with a demo board on the bench if desired.  
      
			
      

		
			
	      

		
		
	
      
	
      
		
      
			
		
      
	
      
	
      
		
						
						
						
				
				
				
		
		
      
			
		
      
	
      

      

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