Products Mentioned

LTC2980-24 Recommended for New Designs
The LTC2980-24 is a 24-channel Power System Manager used to sequence, trim (servo), margin, supervise, manage faults, provide telemetry and create fault...
Datasheet
LTC2980-24 on Analog.com

LT8625SP Recommended for New Designs
The LT8625SP/LT8625SP-1 synchronous step-down regulator features third-generation Silent Switcher technology which is uniquely designed to combine an ultralow...
LT8625SP on Analog.com

LTC2977 Recommended for New Designs
The LTC2977 is an 8-channel Power System Manager used to sequence, trim (servo), margin, supervise, manage faults, provide telemetry and create fault logs...
Datasheet
LTC2977 on Analog.com

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Trimming Output Voltage of LT8625SP-1 with LTC2980-24 (or LTC2977)

		
	
				

			

									
					    bobo321
					
							

            
            			
				
									
											
			
			
				
    
			
			
			    	
			                    
                
				                on Nov 28, 2025 
				
			
			
		
    
		
		                     
				
        		
    
		    
		    		    
    
		      		            		        
    Category: Hardware
    
    		        		            		    
    Product Number:  LT8625SP-1, LT8625SP, LT8625SP 
    
    		        		    		    
    
		    		    
		    			
    
			    
    Hi,
    

    How to trim LT8625SP-1, or any regulator with SET pin (usually from silent switcher 3 products family) using LTC2980-24 DAC, up to 3.3V or more?
    

    The DAC maximum output up-to ~2.6V, and applying amplification at DAC output is not applicable since the Hi-Z output (or "DAC Disconnect" feature) will not result Hi-Z at opamp output.
    

    

    Thanks,
    

    Ita
    
			
    
			
									
		                             
                        

    
    
                                            
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                 Ultralow Noise Regulators
                
                                                    
                 LT8625SP
                
                                                    
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                 Silent Switcher 3
                
                                        
                                            
                
                
                                        
                                            
                
                
                                        
                                            
                
                
                                        
                                            
                
                
                                        
                                            
                
                
                                        
                                            
                
                
                                
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