| Parameters | 
                                
                                                                                                            
                                            | Factory Lead Time | 
                                            4 Weeks | 
                                        
                                                                            
                                            | Mounting Type | 
                                            Through Hole | 
                                        
                                                                            
                                            | Package / Case | 
                                            12-SDIP (0.412, 10.46mm) Exposed Pad | 
                                        
                                                                            
                                            | Operating Temperature | 
                                            -40°C~150°C TJ | 
                                        
                                                                            
                                            | Packaging | 
                                            Tube | 
                                        
                                                                            
                                            | Published | 
                                            2011 | 
                                        
                                                                            
                                            | Series | 
                                            TOPSwitch®-JX | 
                                        
                                                                            
                                            | JESD-609 Code | 
                                            e3 | 
                                        
                                                                            
                                            | Part Status | 
                                            Active | 
                                        
                                                                            
                                            | Moisture Sensitivity Level (MSL) | 
                                            1  (Unlimited) | 
                                        
                                                                            
                                            | Terminal Finish | 
                                            MATTE TIN | 
                                        
                                                                            
                                            | Power (Watts) | 
                                            59W | 
                                        
                                                                            
                                            | HTS Code | 
                                            8542.39.00.01 | 
                                        
                                                                            
                                            | Power Rating | 
                                            43W | 
                                        
                                                                            
                                            | Max Power Dissipation | 
                                            43W | 
                                        
                                                                            
                                            | Technology | 
                                            CMOS | 
                                        
                                                                            
                                            | Number of Functions | 
                                            1 | 
                                        
                                                                            
                                            | Output Voltage | 
                                            12V | 
                                        
                                                                            
                                            | Analog IC - Other Type | 
                                            ANALOG CIRCUIT | 
                                        
                                                                            
                                            | Nominal Supply Current | 
                                            3.8mA | 
                                        
                                                                            
                                            | Output Power | 
                                            43W | 
                                        
                                                                            
                                            | Control Features | 
                                            Frequency Control | 
                                        
                                                                            
                                            | Topology | 
                                            Flyback | 
                                        
                                                                            
                                            | Frequency - Switching | 
                                            66kHz 132kHz | 
                                        
                                                                            
                                            | Internal Switch(s) | 
                                            Yes | 
                                        
                                                                            
                                            | Fault Protection | 
                                            Current Limiting, Over Load, Over Temperature, Over Voltage, Short Circuit | 
                                        
                                                                            
                                            | Duty Cycle | 
                                            78% | 
                                        
                                                                            
                                            | Output Isolation | 
                                            Isolated | 
                                        
                                                                            
                                            | Voltage - Breakdown | 
                                            725V | 
                                        
                                                                            
                                            | Height Seated (Max) | 
                                            2.34mm | 
                                        
                                                                            
                                            | Length | 
                                            8.89mm | 
                                        
                                                                            
                                            | Width | 
                                            7.62mm | 
                                        
                                                                            
                                            | Radiation Hardening | 
                                            No | 
                                        
                                                                            
                                            | RoHS Status | 
                                            RoHS Compliant | 
                                        
                                                                                                    
                            
                         
                                                TOP271VG Overview
A ac to dc converter of the package 12-SDIP (0.412, 10.46mm) Exposed Pad contains the ac to dc converter.The AC/DC power converter type is Tube .It is mounted in the way of Through Hole .It is necessary to operate the ac dc converter at a temperature of -40°C~150°C TJ °C in order for it to perform properly.This AC DC converter employs ANALOG CIRCUIT  analog IC type.66kHz 132kHz is the switching frequency.Currently, it is acdc converter of the manufacturer family of TOPSwitch?-JX .The voltage output by this AC/DC converter is 12V .It is assumed that a coverter generates 43W as its output power.
TOP271VG Features
Packaged with 12-SDIP (0.412, 10.46mm) Exposed Pad
Switching Frequency at 66kHz 132kHz
TOP271VG Applications
There are a lot of Power Integrations TOP271VG AC DC Converters applications. 
- AC-DC Output Power Conversion Applications
 - Standby Power Supply
 - AC?DC USB chargers for Cell Phones
 - ZigBee
 - Home Appliance Applications
 - SMPS house keeping power supplies
 - Industrial controls
 - Standby and Auxiliary Power Supplies 
 - Charger
 - ATX/BTX Auxiliary Power