| Parameters | 
                                                                                                                        
                                                | Mfr | Linear Technology | 
                                                                                    
                                                | Series | - | 
                                                                                    
                                                | Package | Bulk | 
                                                                                    
                                                | Product Status | Obsolete | 
                                                                                    
                                                | Output Type | Transistor Driver | 
                                                                                    
                                                | Function | Step-Up/Step-Down | 
                                                                                    
                                                | Output Configuration | Positive, Isolation Capable | 
                                                                                    
                                                | Topology | Forward Converter | 
                                                                                    
                                                | Number of Outputs | 1 | 
                                                                                    
                                                | Output Phases | 1 | 
                                                                                    
                                                | Voltage - Supply (Vcc/Vdd) | 9V ~ 18V | 
                                                                                    
                                                | Frequency - Switching | Up to 700kHz | 
                                                                                    
                                                | Duty Cycle (Max) | 50% | 
                                                                                    
                                                | Synchronous Rectifier | No | 
                                                                                    
                                                | Clock Sync | Yes | 
                                                                                    
                                                | Serial Interfaces | - | 
                                                                                    
                                                | Control Features | Enable, Soft Start | 
                                                                                    
                                                | Operating Temperature | -40°C ~ 85°C (TA) | 
                                                                                    
                                                | Mounting Type | Surface Mount | 
                                                                                    
                                                | Package / Case | 20-SSOP (0.209", 5.30mm Width) | 
                                                                                    
                                                | Supplier Device Package | 20-SSOP | 
                                                                                    
                                                | Base Product Number | LT3781 | 
                                                                                    
                                                | RoHS Status | RoHS non-compliant | 
                                                                                    
                                                | REACH Status | Vendor Undefined | 
                                                                                    
                                                | ECCN | EAR99 | 
                                                                                    
                                                | HTSUS | 8542.39.0001 | 
                                                                                    
                                                | Other Names | 2156-LT3781EG#PBF | 
                                                                                    
                                                | Standard Package | 1 | 
                                                                                                                
                                
                             
                                                Forward Converter Regulator Positive, Isolation Capable Output Step-Up/Step-Down DC-DC Controller IC 20-SSOP