| Parameters | 
                                                                                                                        
                                                | Mfr | Intersil | 
                                                                                    
                                                | Series | - | 
                                                                                    
                                                | Package | Bulk | 
                                                                                    
                                                | Product Status | Active | 
                                                                                    
                                                | Output Type | Transistor Driver | 
                                                                                    
                                                | Function | Step-Down | 
                                                                                    
                                                | Output Configuration | Positive | 
                                                                                    
                                                | Topology | Buck | 
                                                                                    
                                                | Number of Outputs | 3 | 
                                                                                    
                                                | Output Phases | 3 | 
                                                                                    
                                                | Voltage - Supply (Vcc/Vdd) | 4.5V ~ 28V | 
                                                                                    
                                                | Frequency - Switching | 200kHz ~ 1.2MHz | 
                                                                                    
                                                | Duty Cycle (Max) | - | 
                                                                                    
                                                | Synchronous Rectifier | Yes | 
                                                                                    
                                                | Clock Sync | Yes | 
                                                                                    
                                                | Serial Interfaces | - | 
                                                                                    
                                                | Control Features | Enable, Frequency Control, Phase Control, Power Fail, Power Good, Soft Start, Tracking | 
                                                                                    
                                                | Operating Temperature | -40°C ~ 85°C (TA) | 
                                                                                    
                                                | Mounting Type | Surface Mount | 
                                                                                    
                                                | Package / Case | 40-VFQFN Exposed Pad | 
                                                                                    
                                                | Supplier Device Package | 40-QFN (5x5) | 
                                                                                    
                                                | Other Names | 2156-ISL9444IRZ-T7A | 
                                                                                    
                                                | Standard Package | 65 | 
                                                                                                                
                                
                             
                                                Buck Regulator Positive Output Step-Down DC-DC Controller IC 40-QFN (5x5)