| 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 | 
                                                                                    
                                                | ECCN | EAR99 | 
                                                                                    
                                                | HTSUS | 8542.39.0001 | 
                                                                                    
                                                | Standard Package | 1 | 
                                                                                                                
                                
                             
                                                Buck Regulator Positive Output Step-Down DC-DC Controller IC SOT-23-5