| Parameters | 
                                                                                                                        
                                                | Mfr | Analog Devices Inc. | 
                                                                                    
                                                | Series | - | 
                                                                                    
                                                | Package | Tape & Reel (TR) | 
                                                                                    
                                                | Product Status | Active | 
                                                                                    
                                                | Function | Step-Down | 
                                                                                    
                                                | Output Configuration | Positive | 
                                                                                    
                                                | Topology | Buck | 
                                                                                    
                                                | Output Type | Adjustable | 
                                                                                    
                                                | Number of Outputs | 1 | 
                                                                                    
                                                | Voltage - Input (Min) | 3.1V | 
                                                                                    
                                                | Voltage - Input (Max) | 60V | 
                                                                                    
                                                | Voltage - Output (Min/Fixed) | 0V | 
                                                                                    
                                                | Voltage - Output (Max) | 55V | 
                                                                                    
                                                | Current - Output | 4A | 
                                                                                    
                                                | Frequency - Switching | 1MHz | 
                                                                                    
                                                | Synchronous Rectifier | Yes | 
                                                                                    
                                                | Operating Temperature | -40°C ~ 125°C (TJ) | 
                                                                                    
                                                | Mounting Type | Surface Mount | 
                                                                                    
                                                | Package / Case | 28-TSSOP (0.173", 4.40mm Width) Exposed Pad | 
                                                                                    
                                                | Supplier Device Package | 28-TSSOP-EP | 
                                                                                    
                                                | Base Product Number | LTC3649 | 
                                                                                    
                                                | RoHS Status | ROHS3 Compliant | 
                                                                                    
                                                | Moisture Sensitivity Level (MSL) | 1  (Unlimited) | 
                                                                                    
                                                | REACH Status | REACH Unaffected | 
                                                                                    
                                                | ECCN | EAR99 | 
                                                                                    
                                                | HTSUS | 8542.39.0001 | 
                                                                                    
                                                | Standard Package | 2,000 | 
                                                                                                                
                                
                             
                                                Buck Switching Regulator IC Positive Adjustable 0V 1 Output 4A 28-TSSOP (0.173", 4.40mm Width) Exposed Pad