| Parameters | 
                                
                                                                                                            
                                            | Mounting Type | 
                                            Surface Mount | 
                                        
                                                                            
                                            | Package / Case | 
                                            44-WFQFN Exposed Pad | 
                                        
                                                                            
                                            | Operating Temperature | 
                                            -40°C~125°C TJ | 
                                        
                                                                            
                                            | Packaging | 
                                            Tape & Reel (TR) | 
                                        
                                                                            
                                            | Part Status | 
                                            Obsolete | 
                                        
                                                                            
                                            | Moisture Sensitivity Level (MSL) | 
                                            3  (168 Hours) | 
                                        
                                                                            
                                            | Function | 
                                            Step-Down | 
                                        
                                                                            
                                            | Number of Outputs | 
                                            4 | 
                                        
                                                                            
                                            | Output Type | 
                                            Transistor Driver | 
                                        
                                                                            
                                            | Output Configuration | 
                                            Positive | 
                                        
                                                                            
                                            | Voltage - Supply (Vcc/Vdd) | 
                                            6V~40V | 
                                        
                                                                            
                                            | Control Features | 
                                            Enable | 
                                        
                                                                            
                                            | Topology | 
                                            Buck | 
                                        
                                                                            
                                            | Frequency - Switching | 
                                            105kHz~1.23MHz | 
                                        
                                                                            
                                            | Synchronous Rectifier | 
                                            Yes | 
                                        
                                                                            
                                            | Serial Interfaces | 
                                            I2C, SMBus | 
                                        
                                                                            
                                            | Clock Sync | 
                                            No | 
                                        
                                                                            
                                            | Output Phases | 
                                            1 | 
                                        
                                                                                                    
                            
                         
                                                XR77129ELBMTR-F Overview
With a 44-WFQFN Exposed Pad package, the switching controller is suitable for a wide range of applications. The dc motor controller is adquate to generate for 4 outputs. Packaging for the pmic consists of Tape & Reel (TR) solid enclosures. It is capable of dealing with Transistor Driver dc switching's output (s). dc switching'sDC control operates at 6V~40V volts and has 6V~40V supply voltage. Qualified to work in an dc switcher with -40°C~125°C TJ. In this switching controller, the switch can be set to 105kHz~1.23MHz. The Surface Mount allows it to be used for dc dc regulator in general. For efficient switching control, the dcdc regulator features Enable. 
XR77129ELBMTR-F Features
Transistor Driver Outputs
Switching Frequency: 105kHz~1.23MHz
Enable
XR77129ELBMTR-F Applications
There are a lot of MaxLinear, Inc. XR77129ELBMTR-F DC to DC converter applications. 
- Overvoltage protection circuits in TV sets
 - Fire elevators
 - Program control systems
 - Scientific testing
 - seismic instrument power circuits
 - Cutting machine tools
 - Packaging
 - Product testing
 - Network technology
 - Imported equipment