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LTC2991 Recommended for New Designs
The LTC2991 is used to monitor system temperatures, voltages and currents. Through the I2C serial interface, the eight monitors can individually measure...
Datasheet
LTC2991 on Analog.com

Associated Drivers

LTC2990 Recommended for New Designs
The LTC®2990 is used to monitor system temperatures, voltages and currents. Through the I2C serial interface, the device can be configured to measure many...
Datasheet
LTC2990 on Analog.com

Associated Drivers

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LTC2991 Vcc Supply Voltage Range 2.9V to 5.5V

		
	
				

			

									
					    yasinozer
					
							


			
				
									
											
			
			
				
    
			
			
			    	
			                    
                
				                on Apr 17, 2025 
				
			
			
		
    
		
		                     
				
        		
    
		    
		    		    
    
		      		            		        
    Category: Datasheet/Specs
    
    		        		            		    
    Product Number:  LTC2991  
    
    		        		    		    
    
		    		    
		    			
    
			    
    Hi,
    

    I currently have 2.4V for the supply voltage on my schematic for the LTC2991.
    

    According to the datasheet, the supply voltage should be in the range of 2.9V to 5.5V.
    

    Is this voltage range a general recommendation, or is it absolutely necessary for the voltage to be above 2.9V?
    

    If the 2.9V minimum is a strict requirement, do you have any suggestions for adjusting my design?
    

    Thank you for your help!
    
			
    
			
									
		                             
                        

    
    
                                            
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                 Datasheet/Specs
                
                                                    
                 Digital Temperature Sensors
                
                                                    
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      •  Analog Employees  
      
            
						
                            
            
            				
            
                on Apr 17, 2025 7:20 AM
            
            
						
			            		
      
		
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      Hi Yasinozer,
      

         Unfortunately, the part requires 2.9V - 5.5V as the input.  The undervoltage lockout voltage for the part is at 2.5V and there needs to be a little room around that.  The undervoltage lockout is the point at which the part comes out of reset.  As far as your design is concerned, you will need a higher voltage supply in order to utilize the LTC2991.
      

      Best regards,
      

      Brad 
      
			
      

		
			
	      

		
		
	
      
	
      
		
      
			
		
      
	
      
	
      
		
						
						
				
						
				
				
		
		
      
			
		
      
	
      

      

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