| Parameters | 
                                                                                                            
                                            | Factory Lead Time | 8 Weeks | 
                                                                            
                                            | Package / Case | 28-WFQFN Exposed Pad | 
                                                                            
                                            | Operating Temperature | -40°C~150°C TJ | 
                                                                            
                                            | Packaging | Tube | 
                                                                            
                                            | Part Status | Active | 
                                                                            
                                            | Moisture Sensitivity Level (MSL) | 1  (Unlimited) | 
                                                                            
                                            | Function | Step-Up | 
                                                                            
                                            | Number of Outputs | 2 | 
                                                                            
                                            | Output Type | PWM | 
                                                                            
                                            | Output Configuration | Positive | 
                                                                            
                                            | Voltage - Supply (Vcc/Vdd) | 5.5V~60V | 
                                                                            
                                            | Control Features | Current Limit, Enable, Frequency Control, Power Good | 
                                                                            
                                            | Topology | Boost | 
                                                                            
                                            | Frequency - Switching | 50kHz~425kHz | 
                                                                            
                                            | Synchronous Rectifier | No | 
                                                                            
                                            | Duty Cycle (Max) | 96% | 
                                                                            
                                            | Clock Sync | Yes | 
                                                                            
                                            | RoHS Status | ROHS3 Compliant | 
                                                                                                    
                            
                         
                                                LTC7840HUFD#PBF Overview
Capsuled in the 28-WFQFN Exposed Pad package, the switching controller suits most application needs. This dc motor controller can be used to generate outputs with 2 numbers. Tube solid enclosure protects the pmic. The program can handle PWM dc switching's outputs (s). The supply and operating voltage of the dc control are 5.5V~60V. Suitable for a -40°C~150°C TJ dc switcher. This switching controller can switch at 50kHz~425kHz. Featured in the dcdc regulator is Current Limit, Enable, Frequency Control, Power Good which allows efficient switching control. 
LTC7840HUFD#PBF Features
PWM Outputs
Switching Frequency: 50kHz~425kHz
Current Limit, Enable, Frequency Control, Power Good
LTC7840HUFD#PBF Applications
There are a lot of Linear Technology/Analog Devices LTC7840HUFD#PBF DC to DC converter applications. 
- Electrical distribution systems
- Milling machines
- Computed tomography (CT)
- Post equipment 
- Surge protection circuits
- Electrical power transmission 
- Computer monitoring equipment of building
- Special machining machine tools
- Shearing machines
- Injection molding machinery