| Parameters | 
                                
                                                                                                            
                                            | Mount | 
                                            Surface Mount | 
                                        
                                                                            
                                            | Mounting Type | 
                                            Surface Mount | 
                                        
                                                                            
                                            | Package / Case | 
                                            44-LCC (J-Lead) | 
                                        
                                                                            
                                            | Number of Pins | 
                                            44 | 
                                        
                                                                            
                                            | Operating Temperature | 
                                            -20°C~150°C TJ | 
                                        
                                                                            
                                            | Packaging | 
                                            Tube | 
                                        
                                                                            
                                            | Published | 
                                            2003 | 
                                        
                                                                            
                                            | JESD-609 Code | 
                                            e3 | 
                                        
                                                                            
                                            | Part Status | 
                                            Obsolete | 
                                        
                                                                            
                                            | Moisture Sensitivity Level (MSL) | 
                                            3  (168 Hours) | 
                                        
                                                                            
                                            | Number of Terminations | 
                                            44 | 
                                        
                                                                            
                                            | Termination | 
                                            SMD/SMT | 
                                        
                                                                            
                                            | ECCN Code | 
                                            EAR99 | 
                                        
                                                                            
                                            | Terminal Finish | 
                                            Matte Tin (Sn) | 
                                        
                                                                            
                                            | Applications | 
                                            General Purpose | 
                                        
                                                                            
                                            | Subcategory | 
                                            Motion Control Electronics | 
                                        
                                                                            
                                            | Technology | 
                                            DMOS | 
                                        
                                                                            
                                            | Voltage - Supply | 
                                            3V~5.5V | 
                                        
                                                                            
                                            | Terminal Position | 
                                            QUAD | 
                                        
                                                                            
                                            | Terminal Form | 
                                            J BEND | 
                                        
                                                                            
                                            | Peak Reflow Temperature (Cel) | 
                                            260 | 
                                        
                                                                            
                                            | Supply Voltage | 
                                            5V | 
                                        
                                                                            
                                            | Time@Peak Reflow Temperature-Max (s) | 
                                            40 | 
                                        
                                                                            
                                            | Base Part Number | 
                                            A3977 | 
                                        
                                                                            
                                            | Function | 
                                            Driver - Fully Integrated, Control and Power Stage | 
                                        
                                                                            
                                            | Number of Outputs | 
                                            1 | 
                                        
                                                                            
                                            | Qualification Status | 
                                            Not Qualified | 
                                        
                                                                            
                                            | Output Voltage | 
                                            35V | 
                                        
                                                                            
                                            | Max Output Current | 
                                            3A | 
                                        
                                                                            
                                            | Operating Supply Voltage | 
                                            5V | 
                                        
                                                                            
                                            | Supply Voltage-Min (Vsup) | 
                                            3V | 
                                        
                                                                            
                                            | Interface | 
                                            Logic | 
                                        
                                                                            
                                            | Output Configuration | 
                                            Half Bridge (4) | 
                                        
                                                                            
                                            | Current - Output | 
                                            2.5A | 
                                        
                                                                            
                                            | Max Output Voltage | 
                                            50V | 
                                        
                                                                            
                                            | Voltage - Load | 
                                            8V~35V | 
                                        
                                                                            
                                            | Motor Type | 
                                            Stepper | 
                                        
                                                                            
                                            | Motor Type - Stepper | 
                                            Bipolar | 
                                        
                                                                            
                                            | Step Resolution | 
                                            1, 1/2, 1/4, 1/8 | 
                                        
                                                                            
                                            | Height Seated (Max) | 
                                            4.57mm | 
                                        
                                                                            
                                            | REACH SVHC | 
                                            No SVHC | 
                                        
                                                                            
                                            | RoHS Status | 
                                            ROHS3 Compliant | 
                                        
                                                                            
                                            | Lead Free | 
                                            Lead Free | 
                                        
                                                                                                    
                            
                         
                                                A3977SED-T Overview
This package was designed with Tubein mind.This part is packed in a 44-LCC (J-Lead) case.The part should be mounted by Surface Mount.Fits the component connected to General Purpose.There is a possibility of providing 3V~5.5Vvolts through the device.Regarding the operating temperature, it is in the range of -20°C~150°C TJ°C.This part has 44termination options.Drivers controllers is possible to apply voltage at a rate of 8V~35Vto the load.Drivers controllers is important to note that this amplifier should be operated at the 5Vsetting.There is a recommended mounting method of Surface Mount.Maintain the current output of the part at 2.5A volts.The A3977part number allows us to locate it.44 pins are provided for its design.Drivers controllers is a part of the Motion Control Electronics series.Drivers controllers is possible to access 1outputs.The driver operates from a supply voltage of 5V volts.Continually maintains the output voltage at 35V.This motor type can be recognized as Stepper.As a result, the maximum output current reaches 3Ain order to meet the requirements of the operation.
A3977SED-T Features
Applications : General Purpose
Load voltage across the chip 8V~35V
base on A3977 number
designed with 1 outputs
Motor Type classified as Stepper
A3977SED-T Applications
There are a lot of Allegro MicroSystems A3977SED-T motor drivers applications. 
- LED ballasts
 - Handheld devices
 - Tail lights
 - Matrix LED dimmers
 - Automotive instrumentation
 - High brightness LED lighting
 - Step-up or step-down driver topologies
 - Digital still cameras
 - LCD displays
 - Tunnel lights