| Parameters | 
                                
                                                                                                            
                                            | Mfr | 
                                            National Semiconductor | 
                                        
                                                                            
                                            | Series | 
                                            - | 
                                        
                                                                            
                                            | Package | 
                                            Bulk | 
                                        
                                                                            
                                            | Product Status | 
                                            Active | 
                                        
                                                                            
                                            | Output Type | 
                                            Transistor Driver | 
                                        
                                                                            
                                            | Function | 
                                            Step-Down | 
                                        
                                                                            
                                            | Output Configuration | 
                                            Positive | 
                                        
                                                                            
                                            | Topology | 
                                            Buck | 
                                        
                                                                            
                                            | Number of Outputs | 
                                            1 | 
                                        
                                                                            
                                            | Output Phases | 
                                            1 | 
                                        
                                                                            
                                            | Voltage - Supply (Vcc/Vdd) | 
                                            2.8V ~ 5.5V | 
                                        
                                                                            
                                            | Frequency - Switching | 
                                            100kHz ~ 1MHz | 
                                        
                                                                            
                                            | Duty Cycle (Max) | 
                                            - | 
                                        
                                                                            
                                            | Synchronous Rectifier | 
                                            Yes | 
                                        
                                                                            
                                            | Clock Sync | 
                                            No | 
                                        
                                                                            
                                            | Serial Interfaces | 
                                            - | 
                                        
                                                                            
                                            | Control Features | 
                                            - | 
                                        
                                                                            
                                            | Operating Temperature | 
                                            -40°C ~ 125°C (TJ) | 
                                        
                                                                            
                                            | Mounting Type | 
                                            Surface Mount | 
                                        
                                                                            
                                            | Package / Case | 
                                            SC-74A, SOT-753 | 
                                        
                                                                            
                                            | Supplier Device Package | 
                                            SOT-23-5 | 
                                        
                                                                            
                                            | Base Product Number | 
                                            LM1770 | 
                                        
                                                                            
                                            | RoHS Status | 
                                            RoHS non-compliant | 
                                        
                                                                            
                                            | Moisture Sensitivity Level (MSL) | 
                                            1  (Unlimited) | 
                                        
                                                                            
                                            | REACH Status | 
                                            REACH Affected | 
                                        
                                                                            
                                            | ECCN | 
                                            EAR99 | 
                                        
                                                                            
                                            | HTSUS | 
                                            8542.39.0001 | 
                                        
                                                                            
                                            | Standard Package | 
                                            1 | 
                                        
                                                                                                    
                            
                         
                                                Buck Regulator Positive Output Step-Down DC-DC Controller IC SOT-23-5