| Parameters | 
                                
                                                                                                            
                                            | Surface Mount | 
                                            NO | 
                                        
                                                                            
                                            | Operating Temperature | 
                                            -40°C~150°C TJ | 
                                        
                                                                            
                                            | Packaging | 
                                            Tube | 
                                        
                                                                            
                                            | Published | 
                                            1996 | 
                                        
                                                                            
                                            | Series | 
                                            TOPSwitch® | 
                                        
                                                                            
                                            | Part Status | 
                                            Obsolete | 
                                        
                                                                            
                                            | Moisture Sensitivity Level (MSL) | 
                                            1  (Unlimited) | 
                                        
                                                                            
                                            | Number of Terminations | 
                                            3 | 
                                        
                                                                            
                                            | ECCN Code | 
                                            EAR99 | 
                                        
                                                                            
                                            | Power (Watts) | 
                                            150W | 
                                        
                                                                            
                                            | HTS Code | 
                                            8542.39.00.01 | 
                                        
                                                                            
                                            | Max Power Dissipation | 
                                            50W | 
                                        
                                                                            
                                            | Technology | 
                                            CMOS | 
                                        
                                                                            
                                            | Terminal Position | 
                                            SINGLE | 
                                        
                                                                            
                                            | Number of Functions | 
                                            1 | 
                                        
                                                                            
                                            | Pin Count | 
                                            3 | 
                                        
                                                                            
                                            | JESD-30 Code | 
                                            R-PSFM-T3 | 
                                        
                                                                            
                                            | Qualification Status | 
                                            Not Qualified | 
                                        
                                                                            
                                            | Output Voltage | 
                                            5.8V | 
                                        
                                                                            
                                            | Analog IC - Other Type | 
                                            SWITCHING REGULATOR | 
                                        
                                                                            
                                            | Nominal Supply Current | 
                                            1.4mA | 
                                        
                                                                            
                                            | Input Voltage (Min) | 
                                            36V | 
                                        
                                                                            
                                            | Topology | 
                                            Boost, Buck, Flyback, Forward | 
                                        
                                                                            
                                            | Control Mode | 
                                            VOLTAGE-MODE | 
                                        
                                                                            
                                            | Frequency - Switching | 
                                            100kHz | 
                                        
                                                                            
                                            | Control Technique | 
                                            PULSE WIDTH MODULATION | 
                                        
                                                                            
                                            | Internal Switch(s) | 
                                            Yes | 
                                        
                                                                            
                                            | Fault Protection | 
                                            Current Limiting, Over Temperature | 
                                        
                                                                            
                                            | Max Duty Cycle | 
                                            70 % | 
                                        
                                                                            
                                            | Max Supply Voltage (AC) | 
                                            265V | 
                                        
                                                                            
                                            | Duty Cycle | 
                                            67% | 
                                        
                                                                            
                                            | Output Isolation | 
                                            Either | 
                                        
                                                                            
                                            | Voltage - Breakdown | 
                                            700V | 
                                        
                                                                            
                                            | Min Supply Voltage (AC) | 
                                            85V | 
                                        
                                                                            
                                            | RoHS Status | 
                                            RoHS Compliant | 
                                        
                                                                            
                                            | Lead Free | 
                                            Lead Free | 
                                        
                                                                            
                                            | Mounting Type | 
                                            Through Hole | 
                                        
                                                                            
                                            | Package / Case | 
                                            TO-220-3 | 
                                        
                                                                                                    
                            
                         
                                                TOP204YN Overview
The ac to dc converter is embedded in TO-220-3  package.Tube case is available for the ac dc converter.As you can see, this AC/DC converter is mounted in the way of Through Hole .Ideally, the ac dc converter should be operated at a temperature of -40°C~150°C TJ  degrees Celsius.In this AC DC converter, an analog integrated circuit (IC) of type SWITCHING REGULATOR is employed.Switching frequency reaches 100kHz  Hz.In total, there are 3  terminations.A total of 3 pins are present on the ac-dc converter.This AC to DC converter belongs to the TOPSwitch?  manufacturer family.As a result, its output voltage is 5.8V .A minimum voltage of 85V is required across the converter.It is possible to supply 265V voltage across the converter.
TOP204YN Features
Packaged with TO-220-3
Switching Frequency at 100kHz
TOP204YN Applications
There are a lot of Power Integrations TOP204YN AC DC Converters applications. 
- Replacements for bulky plug-in transformers
 - Smartphones
 - Battery chargers for media tablets
 - Wireless System
 - Low power ac?dc Adapters for Chargers
 - Z-Wave
 - AC?DC USB chargers for Cell Phones
 - Battery Chargers
 - Switching AC-DC Charger
 - Standby power