| Parameters | 
                                    
                                                                                                            
                                        | Mfr | 
                                        Linear Technology | 
                                    
                                                                        
                                        | Series | 
                                        - | 
                                    
                                                                        
                                        | Package | 
                                        Bulk | 
                                    
                                                                        
                                        | Product Status | 
                                        Active | 
                                    
                                                                        
                                        | Topology | 
                                        Step-Down (Buck) (1), Linear (LDO) (2) | 
                                    
                                                                        
                                        | Number of Outputs | 
                                        3 | 
                                    
                                                                        
                                        | Frequency - Switching | 
                                        243kHz ~ 2.2MHz | 
                                    
                                                                        
                                        | Voltage/Current - Output 1 | 
                                        1.2V ~ 38.6V, 400mA | 
                                    
                                                                        
                                        | Voltage/Current - Output 2 | 
                                        0.8V ~ 38.6V, 200mA | 
                                    
                                                                        
                                        | Voltage/Current - Output 3 | 
                                        0.8V ~ 38.6V, 200mA | 
                                    
                                                                        
                                        | w/LED Driver | 
                                        No | 
                                    
                                                                        
                                        | w/Supervisor | 
                                        No | 
                                    
                                                                        
                                        | w/Sequencer | 
                                        No | 
                                    
                                                                        
                                        | Voltage - Supply | 
                                        1.6V ~ 45V | 
                                    
                                                                        
                                        | Operating Temperature | 
                                        -40°C ~ 125°C | 
                                    
                                                                        
                                        | Mounting Type | 
                                        Surface Mount | 
                                    
                                                                        
                                        | Package / Case | 
                                        24-WFQFN Exposed Pad | 
                                    
                                                                        
                                        | Supplier Device Package | 
                                        24-QFN (3x5) | 
                                    
                                                                        
                                        | Other Names | 
                                        2156-LT3667IUDD#PBF | 
                                    
                                                                        
                                        | Standard Package | 
                                        1 | 
                                    
                                                                                                        
                            
                         
                                                PMIC - Voltage Regulators - Linear Switching 3 Output Step-Down (Buck) (1), Linear (LDO) (2) 243kHz ~ 2.2MHz 24-QFN (3x5)