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LTC1624 Production
The LTC1624 is a current mode switching regulator controller that drives an external N-channel power MOSFET using a fixed frequency architecture. It can...
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LTC1624 on Analog.com

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Negative output Voltage

		
	
				

			

									
					    206_RC
					
							

            
            			
				
									
											
			
			
				
    
			
			
			    	
			                    
                
				                on Oct 26, 2022 
				
			
			
		
    
		
		                    	    
    
        	    
    Thread Summary
    
                The user seeks to modify an LTC1624 buck converter circuit to generate -5V from a +12V battery supply, aiming to supply an operational amplifier (AOP) with +5V and -5V using a common ground. The final answer provides a simplified schematic and explains that the GND pin should be grounded, while the OUT pin serves as the VNEG and reference for the negative output. The user successfully simulates +5V and -5V but is confused about the common ground connection for the AOP. The solution clarifies that the GND pin of the LTC1624 should be connected to the system ground, and the OUT pin should be used as the -5V supply.
                        	    
    
                
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    Category: Hardware
    
    		        		            		    
    Product Number:  LTC1624 
    
    		        		    		    
    
		    		    
		    			
    
			    
    Hello,
    

    I found a component that may be suitable for my application the LTC1624 (please see the DS in this attached). I don't understand very well how it works this electronic assembly :
    

     
    

    Is it possible to delete M2/M3 and R3 to have something simpler. I have only +12V (comes from the battery voltage) and I need -5V with 1A to the ouput. Thank you for your helps.
    

    Regards
    

    Yann DOPDF   
    
			
    
			
									
		                             
                        

    
    
                                            
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