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ADP2371 Recommended for New Designs
The ADP2370/ADP2371 are high efficiency, low quiescent current, 800 mA buck (step-down) dc-to-dc converters in small 8-lead, 3 mm × 3 mm LFCSP (QFN) packages...
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ADP2371 on Analog.com

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Question for ADP2371's LTspice model

		
	
				

			

									
					    mrbyu
					
							

            
            			
				
									
											
			
			
				
    
			
			
			    	
			                    
                
				                on Feb 26, 2024 
				
			
			
		
    
		
		                    	    
    
        	    
    Thread Summary
    
                The user encountered an issue with the ADP2371-ADJ LTspice model where the circuit fails to switch and reach the target output voltage (5V) when FSEL is set to Low (GND, fsw=600kHz). The final answer confirms the problem and suggests sharing the simulation file for further investigation. The accompanying answer requests the simulation file to diagnose the issue.
                        	    
    
                
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    Category: Software
    
    		        		            		    
    Product Number:  ADP2371 
    
    		        		        		        
    Software Version: LTspice XVII / 24
    
    		    		    
    
		    		    
		    			
    
			    
    Hello ADI support,
    

    I  am simulating on ADP2371-ADJ 's LTspice model.
    It can work at FSEL=High=Vin(fsw=1.2MHz), however it can not work at FSEL=Low=GND(fsw=600kHz).
    Is it rooted by LTspice's internal model issue ?
    

    Regards,
    Yuta Ueno / Marubun FAE
    
			
    
			
									
		                             
                        

    
    
                                            
                 software
                
                                                    
                 LTspice XVII / 24
                
                                                    
                 Internal Power Switch Buck Regulators
                
                                                    
                 ADP2371
                
                                                    
                 Step-Down (Buck) Regulators