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Can not turn on ADP5073



		

			

									
						alanbenny
					
							

			
				
									
											
							 		
		        	            							
			
			    	
			                    
                
				                on Jul 22, 2019 
				
			
			
		


				
		

		    		    
		    
		    	
			
Hi, 


I have some problem with ADP5073.


I tried to get a Vout = -10v, with VIN = 3.3V using the circuit in datasheet.


I gave VDD  (I tried 3.3~5V) and found that VREG was about 0.3V.


It means that I can not turn on the regulator.


I tried to send a 3.3v to EN pin, however, I found that the EN pin has a 0.5v output voltage.


I thought that EN pin suppose to be an input pin.


Does anyone have a suggestion?


Thanks.