| Parameters | 
                                
                                                                                                            
                                            | Package / Case | 
                                            SOIC | 
                                        
                                                                            
                                            | Surface Mount | 
                                            YES | 
                                        
                                                                            
                                            | Number of Pins | 
                                            20 | 
                                        
                                                                            
                                            | Weight | 
                                            569.003279mg | 
                                        
                                                                            
                                            | Packaging | 
                                            Tape & Reel (TR) | 
                                        
                                                                            
                                            | JESD-609 Code | 
                                            e4 | 
                                        
                                                                            
                                            | Pbfree Code | 
                                            yes | 
                                        
                                                                            
                                            | Moisture Sensitivity Level (MSL) | 
                                            2 | 
                                        
                                                                            
                                            | Number of Terminations | 
                                            20 | 
                                        
                                                                            
                                            | ECCN Code | 
                                            EAR99 | 
                                        
                                                                            
                                            | Terminal Finish | 
                                            Nickel/Palladium/Gold (Ni/Pd/Au) | 
                                        
                                                                            
                                            | Max Operating Temperature | 
                                            70°C | 
                                        
                                                                            
                                            | Min Operating Temperature | 
                                            0°C | 
                                        
                                                                            
                                            | HTS Code | 
                                            8542.39.00.01 | 
                                        
                                                                            
                                            | Subcategory | 
                                            Switching Regulator or Controllers | 
                                        
                                                                            
                                            | Technology | 
                                            BIPOLAR | 
                                        
                                                                            
                                            | Terminal Position | 
                                            DUAL | 
                                        
                                                                            
                                            | Terminal Form | 
                                            GULL WING | 
                                        
                                                                            
                                            | Peak Reflow Temperature (Cel) | 
                                            260 | 
                                        
                                                                            
                                            | Number of Functions | 
                                            1 | 
                                        
                                                                            
                                            | Terminal Pitch | 
                                            1.27mm | 
                                        
                                                                            
                                            | Frequency | 
                                            500kHz | 
                                        
                                                                            
                                            | Pin Count | 
                                            20 | 
                                        
                                                                            
                                            | Input Voltage-Nom | 
                                            18V | 
                                        
                                                                            
                                            | Temperature Grade | 
                                            COMMERCIAL | 
                                        
                                                                            
                                            | Max Supply Voltage | 
                                            20V | 
                                        
                                                                            
                                            | Analog IC - Other Type | 
                                            POWER FACTOR CONTROLLER | 
                                        
                                                                            
                                            | Input Voltage (Min) | 
                                            15V | 
                                        
                                                                            
                                            | Control Mode | 
                                            CURRENT-MODE | 
                                        
                                                                            
                                            | Output Current-Max | 
                                            1.5A | 
                                        
                                                                            
                                            | Frequency - Switching | 
                                            230kHz | 
                                        
                                                                            
                                            | Input Voltage (Max) | 
                                            35V | 
                                        
                                                                            
                                            | Control Technique | 
                                            PULSE WIDTH MODULATION | 
                                        
                                                                            
                                            | Switcher Configuration | 
                                            BOOST | 
                                        
                                                                            
                                            | Height Seated (Max) | 
                                            2.65mm | 
                                        
                                                                            
                                            | Length | 
                                            12.8mm | 
                                        
                                                                            
                                            | Width | 
                                            7.5mm | 
                                        
                                                                            
                                            | Radiation Hardening | 
                                            No | 
                                        
                                                                            
                                            | RoHS Status | 
                                            RoHS Compliant | 
                                        
                                                                            
                                            | Lead Free | 
                                            Lead Free | 
                                        
                                                                                                    
                            
                         
                                                UC3855ADWTRG4 Overview
It comes in a SOIC package.In terms of packaging, it is in the form of a Tape & Reel (TR).Besides POWER FACTOR CONTROLLER, there are other types of IC in this part.On the gadget, there are a number of 20 terminals that can be found.The pin number of the component remains 20.There is a frequency of switching called 230kHz.A 20 pin sum is present in it.Minimum input voltage 15V is needed to operate it.In a way, it can be considered as a subclass of Switching Regulator or Controllers.The input voltage of the device (Max) is 35V.This device can continue to function accurately with a frequency of 500kHz.At most, it works on 1.5A output currentIn order for it to perform properly, it should be warmer than 0°C when it is operating.Taking 70°C as the maximum operating temperature, the system will operate at this temperature.Only a 20V supply voltage will work with it.
UC3855ADWTRG4 Features
UC3855ADWTRG4 Applications
There are a lot of Texas Instruments UC3855ADWTRG4 PFC PMICs applications. 
- Sense & Conrol
 - VCO (Voltage-Controlled Oscillator)
 - Power generator plants
 - Desktop microcomputer systems
 - Portable medical devices
 - Ethernet condition monitoring vibration sensor
 - Multiple-power supply system
 - Voltage tracker protection circuits
 - Digital audio player
 - Servers