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LT3085 Recommended for New Designs
The LT3085 is a 500mA low dropout linear regulator that can be paralleled to increase output current or spread heat on surface mounted boards. Designed...
Datasheet
LT3085 on Analog.com

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On LT3085 typical app combo: hi-current with hi-efficiency

		
	
				

			

									
					    Jeronym Law
					
							

            
            			
				
									
											
			
			
				
    
			
			
			    	
			                    
                
				                on Jun 17, 2021 
				
			
			
		
    
		
		                    	    
    
        	    
    Thread Summary
    
                The user inquired about combining a single LT3085 with a PNP amplifier to achieve higher current output, similar to the 5A output in the parallel LT3085 application. The final answer confirmed that this is technically possible but noted that the LTC3414 buck chip is limited to 4A output. The user then clarified their intention to use a Silent Switcher series buck solution, such as the LT8648, for the application.
                        	    
    
                
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    Hi,
    

    In the datasheet of LT3085, here are 2 typical application circuits.
    

    Page 17:
    

     
    

    Page 22:
    

     
    

    So can they be a conbination? Namely, employ one LT3085 chip plus PNP amplifier, instead of four LT3085 chips parallel. To accomplish a higher current output. Here please despite whether the buck chip is able to afford a 5A load or ot.
    

    Thanks a lot.
    

    Highest Regards.
    

    Jeronym Law
    
			
    
			
									
		                             
                        

    
    
                                            
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