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ADP7142 Recommended for New Designs
The ADP7142 is a CMOS, low dropout (LDO) linear regulator that operates from 2.7 V to 40 V and provides up to 200 mA of output current. This high input...
ADP7142 on Analog.com

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Protection diodes with ADP7142



		

			

									
					    yuki
					
							

			
				
									
											
			
			
				
    
			
			
			    	
			                    
                
				                on Jan 16, 2022 
				
			
			
		
    

				
		
    
		    		    
		    
		    	
			
    When we use a linear regulator, I think some diodes are connected to it to protect from reverse voltage and over voltage.


    I'm considering using ADP7142, but no description about these diodes is found on the ADP7142 datasheet.
    Does it mean that these diodes are unnecessary, or necessary like as the other regulator?

    Regards,
    Yuki
    
										

    
				Change first name only.
    
[edited by: yuki at 1:01 PM (GMT -5) on 16 Jan 2022]
				
    
						
			        
		
    

				
						
        

    
    Tags: 
                                            
                 voltage regulator
                
                                                    
                 adp7142
                
                                                    
                 LDO Linear Regulators
                
                                                    
                 Positive Linear Regulators (LDO)
                
                                
            
    
    
    

		
    
			
						
									
									
						
						
			
			
			
			
		
    

        
        

					
    
			
    


    


	
    
		
	
    















    
	
    
	
    
					



			








	
	
	
	



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      •  Analog Employees  
      
            
			                            
                                                                                                                        
            
				
			
            
					
      
	
      

		
		
      
					
      Hi Yuki,
      

      There are ESD protection diodes on all our ADP7142 LDOs by default. You'll be able to verify them via diode test on all the pins.
      

      That said, the ADP7142 does not have active reverse protection circuitry (unlike ADP7102/3/5) and therefore you'll need additional external components to add this feature on your circuit.
      

      Regards,
      

      Bryan
      
			
      

		
			
	      

		
		
	
      
	
      
		
      
			
		
      
	
      
	
      
		
						
						
						
						
				
				
		
		
      
			
		
      
	
      

      

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													0
							
			
				
									
							        
			
			
			
      •  Analog Employees  
      
            
			                            
                                                                                                                        
            
				
			
            
					
      
	
      

		
		
      
					
      Hi Yuki,
      

      There are ESD protection diodes on all our ADP7142 LDOs by default. You'll be able to verify them via diode test on all the pins.
      

      That said, the ADP7142 does not have active reverse protection circuitry (unlike ADP7102/3/5) and therefore you'll need additional external components to add this feature on your circuit.
      

      Regards,
      

      Bryan
      
			
      

		
			
	      

		
		
	
      
	
      
		
      
			
		
      
	
      
	
      
		
						
						
						
						
				
				
		
		
      
			
		
      
	
      

      

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