| Parameters | 
                                                                                                            
                                        | Mfr | Analog Devices Inc. | 
                                                                        
                                        | Series | Automotive, AEC-Q100 | 
                                                                        
                                        | Package | Tube | 
                                                                        
                                        | Product Status | Active | 
                                                                        
                                        | Function | Step-Down | 
                                                                        
                                        | Output Configuration | Positive | 
                                                                        
                                        | Topology | Buck | 
                                                                        
                                        | Output Type | Adjustable | 
                                                                        
                                        | Number of Outputs | 1 | 
                                                                        
                                        | Voltage - Input (Min) | 2.6V | 
                                                                        
                                        | Voltage - Input (Max) | 65V | 
                                                                        
                                        | Voltage - Output (Min/Fixed) | 0.81V | 
                                                                        
                                        | Voltage - Output (Max) | 65V | 
                                                                        
                                        | Current - Output | 3.5A | 
                                                                        
                                        | Frequency - Switching | 200kHz ~ 3MHz | 
                                                                        
                                        | Synchronous Rectifier | Yes | 
                                                                        
                                        | Operating Temperature | - | 
                                                                        
                                        | Mounting Type | Surface Mount | 
                                                                        
                                        | Package / Case | 20-WFQFN, 18 Leads, Exposed Pad | 
                                                                        
                                        | Supplier Device Package | 20-QFN (3x4) | 
                                                                        
                                        | RoHS Status | ROHS3 Compliant | 
                                                                        
                                        | Moisture Sensitivity Level (MSL) | 1  (Unlimited) | 
                                                                        
                                        | REACH Status | REACH Unaffected | 
                                                                        
                                        | Other Names | 505-LT8641ARUDCM#PBF | 
                                                                        
                                        | Standard Package | 91 | 
                                                                                                        
                            
                         
                                                Buck Switching Regulator IC Positive Adjustable 0.81V 1 Output 3.5A 20-WFQFN, 18 Leads, Exposed Pad