| Parameters | 
                                
                                                                                                            
                                            | Mounting Type | 
                                            Through Hole | 
                                        
                                                                            
                                            | Package / Case | 
                                            TO-220-3 | 
                                        
                                                                            
                                            | Surface Mount | 
                                            NO | 
                                        
                                                                            
                                            | Operating Temperature | 
                                            -40°C~150°C TJ | 
                                        
                                                                            
                                            | Packaging | 
                                            Tube | 
                                        
                                                                            
                                            | Published | 
                                            2001 | 
                                        
                                                                            
                                            | Series | 
                                            TOPSwitch®-II | 
                                        
                                                                            
                                            | JESD-609 Code | 
                                            e0 | 
                                        
                                                                            
                                            | Pbfree Code | 
                                            no | 
                                        
                                                                            
                                            | Part Status | 
                                            Obsolete | 
                                        
                                                                            
                                            | Moisture Sensitivity Level (MSL) | 
                                            1  (Unlimited) | 
                                        
                                                                            
                                            | Number of Terminations | 
                                            3 | 
                                        
                                                                            
                                            | ECCN Code | 
                                            EAR99 | 
                                        
                                                                            
                                            | Terminal Finish | 
                                            Tin/Lead (Sn/Pb) | 
                                        
                                                                            
                                            | HTS Code | 
                                            8542.39.00.01 | 
                                        
                                                                            
                                            | Subcategory | 
                                            Switching Regulator or Controllers | 
                                        
                                                                            
                                            | Max Power Dissipation | 
                                            12W | 
                                        
                                                                            
                                            | Technology | 
                                            CMOS | 
                                        
                                                                            
                                            | Terminal Position | 
                                            SINGLE | 
                                        
                                                                            
                                            | Peak Reflow Temperature (Cel) | 
                                            NOT SPECIFIED | 
                                        
                                                                            
                                            | Number of Functions | 
                                            1 | 
                                        
                                                                            
                                            | Terminal Pitch | 
                                            2.54mm | 
                                        
                                                                            
                                            | Time@Peak Reflow Temperature-Max (s) | 
                                            NOT SPECIFIED | 
                                        
                                                                            
                                            | Pin Count | 
                                            3 | 
                                        
                                                                            
                                            | JESD-30 Code | 
                                            R-PSFM-T3 | 
                                        
                                                                            
                                            | Qualification Status | 
                                            Not Qualified | 
                                        
                                                                            
                                            | Output Voltage | 
                                            5.7V | 
                                        
                                                                            
                                            | Analog IC - Other Type | 
                                            SWITCHING REGULATOR | 
                                        
                                                                            
                                            | Nominal Supply Current | 
                                            1.2mA | 
                                        
                                                                            
                                            | Topology | 
                                            Boost, Buck, Flyback, Forward | 
                                        
                                                                            
                                            | Control Mode | 
                                            VOLTAGE-MODE | 
                                        
                                                                            
                                            | Output Current-Max | 
                                            0.28A | 
                                        
                                                                            
                                            | 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 | 
                                            Isolated | 
                                        
                                                                            
                                            | Voltage - Breakdown | 
                                            700V | 
                                        
                                                                            
                                            | Min Supply Voltage (AC) | 
                                            85V | 
                                        
                                                                            
                                            | RoHS Status | 
                                            Non-RoHS Compliant | 
                                        
                                                                            
                                            | Lead Free | 
                                            Contains Lead | 
                                        
                                                                                                    
                            
                         
                                                TOP221Y Overview
TO-220-3 is the package in which the ac to dc converter is embedded.In Tube AC/DC power converter, it is available.There is a AC/DC converter mounted in the way of Through Hole .It is recommended that the ac dc converter be operated at a temperature of -40°C~150°C TJ in order to ensure its performance.In this AC DC converter, the analog IC type is SWITCHING REGULATOR .Switching frequency reaches 100kHz  Hz.As a result, it has a total of 3  terminations.There are 3   pins in the ac-dc converter.The AC to DC converter belongs to the manufacturer family of TOPSwitch?-II .Switching Regulator or Controllers includes the ac to dc conversions.The voltage output by this AC/DC converter is 5.7V .Ac to dc inverters can only be powered at a maximum current of 0.28A .This converter requires a minimum supply voltage of 85V  volts.There is a maximum supply voltage of 265V across the converter.
TOP221Y Features
Packaged with TO-220-3
Switching Frequency at 100kHz
TOP221Y Applications
There are a lot of Power Integrations TOP221Y AC DC Converters applications. 
- DVD players
 - Remotely-controlled appliances
 - Small off-line low voltage power supplies
 - White goods
 - Standby Power Supplies
 - RCC SMPS
 - LED Driver
 - Universal Off-Line Power Supplies
 - Open Frame Switching Power Supply
 - Adaptors for DSCs