| Parameters | 
                                                                                                                        
                                                | Mfr | Fairchild Semiconductor | 
                                                                                    
                                                | Series | - | 
                                                                                    
                                                | Package | Bulk | 
                                                                                    
                                                | Product Status | Obsolete | 
                                                                                    
                                                | Output Isolation | - | 
                                                                                    
                                                | Internal Switch(s) | No | 
                                                                                    
                                                | Voltage - Breakdown | - | 
                                                                                    
                                                | Topology | - | 
                                                                                    
                                                | Voltage - Start Up | 8.4 V | 
                                                                                    
                                                | Voltage - Supply (Vcc/Vdd) | 12V ~ 25V | 
                                                                                    
                                                | Duty Cycle | 97% | 
                                                                                    
                                                | Frequency - Switching | Up to 500kHz | 
                                                                                    
                                                | Fault Protection | - | 
                                                                                    
                                                | Control Features | Frequency Control | 
                                                                                    
                                                | Operating Temperature | 0°C ~ 70°C (TA) | 
                                                                                    
                                                | Package / Case | 14-SOIC (0.154", 3.90mm Width) | 
                                                                                    
                                                | Supplier Device Package | 14-SOIC | 
                                                                                    
                                                | Mounting Type | Surface Mount | 
                                                                                    
                                                | Base Product Number | KA3843 | 
                                                                                    
                                                | RoHS Status | ROHS3 Compliant | 
                                                                                    
                                                | ECCN | EAR99 | 
                                                                                    
                                                | HTSUS | 8542.39.0001 | 
                                                                                    
                                                | Standard Package | 3,000 | 
                                                                                                                
                                
                             
                                                Converter Offline Topology Up to 500kHz 14-SOIC