| Parameters | 
                                
                                                                                                            
                                            | Mount | 
                                            Surface Mount | 
                                        
                                                                            
                                            | Mounting Type | 
                                            Surface Mount | 
                                        
                                                                            
                                            | Package / Case | 
                                            28-TSSOP (0.173, 4.40mm Width) Exposed Pad | 
                                        
                                                                            
                                            | Number of Pins | 
                                            28 | 
                                        
                                                                            
                                            | Supplier Device Package | 
                                            28-TSSOP-EP | 
                                        
                                                                            
                                            | Operating Temperature | 
                                            -40°C~150°C TJ | 
                                        
                                                                            
                                            | Packaging | 
                                            Tube | 
                                        
                                                                            
                                            | Published | 
                                            2003 | 
                                        
                                                                            
                                            | Part Status | 
                                            Obsolete | 
                                        
                                                                            
                                            | Moisture Sensitivity Level (MSL) | 
                                            1  (Unlimited) | 
                                        
                                                                            
                                            | Max Operating Temperature | 
                                            125°C | 
                                        
                                                                            
                                            | Min Operating Temperature | 
                                            -40°C | 
                                        
                                                                            
                                            | Applications | 
                                            General Purpose | 
                                        
                                                                            
                                            | Technology | 
                                            DMOS | 
                                        
                                                                            
                                            | Voltage - Supply | 
                                            3V~5.5V | 
                                        
                                                                            
                                            | Base Part Number | 
                                            A3977 | 
                                        
                                                                            
                                            | Function | 
                                            Driver - Fully Integrated, Control and Power Stage | 
                                        
                                                                            
                                            | Number of Outputs | 
                                            1 | 
                                        
                                                                            
                                            | Operating Supply Voltage | 
                                            5V | 
                                        
                                                                            
                                            | Interface | 
                                            Logic | 
                                        
                                                                            
                                            | Max Supply Voltage | 
                                            5.5V | 
                                        
                                                                            
                                            | Min Supply Voltage | 
                                            3V | 
                                        
                                                                            
                                            | Output Configuration | 
                                            Half Bridge (4) | 
                                        
                                                                            
                                            | Current - Output | 
                                            2.5A | 
                                        
                                                                            
                                            | Voltage - Load | 
                                            8V~35V | 
                                        
                                                                            
                                            | Motor Type - Stepper | 
                                            Bipolar | 
                                        
                                                                            
                                            | Step Resolution | 
                                            1, 1/2, 1/4, 1/8 | 
                                        
                                                                            
                                            | RoHS Status | 
                                            ROHS3 Compliant | 
                                        
                                                                            
                                            | Lead Free | 
                                            Lead Free | 
                                        
                                                                                                    
                            
                         
                                                A3977KLP-T Overview
Drivers controllers includes a Tubepackage.Drivers controllers comes in a 28-TSSOP (0.173, 4.40mm Width) Exposed Pad case.To mount the part by [0], it is recommended that you do so.The component connected in General Purposeis compatible with it.There is a capability for the device to provide 3V~5.5V volts.Operation temperature ranges from -40°C~150°C TJ.Drivers controllers is possible to apply voltage to the load at the rate of 8V~35V.Its recommended mounting way is Surface Mount.The output current should remain at 2.5A.A3977is the part number that finds it.The device has 28 pins.There are 1 outputs available.This driver operates from a supply voltage of 5V.At its maximum operating temperature, the device reaches 125°C.Ideally, the operating temperature should be higher than -40°C.Controller ic has the capacController icy to apply the device wController ich a maximum supply voltage of 5.5V.A minimal supply voltage of 3V is sufficient to operate the device.
A3977KLP-T Features
Applications : General Purpose
Load voltage across the chip 8V~35V
base on A3977 number
designed with 1 outputs
A3977KLP-T Applications
There are a lot of Allegro MicroSystems A3977KLP-T motor drivers applications. 
- PWM generators
 - Mobile phone display backlight and key light driving
 - A cross between entertainment
 - Arena lighting 
 - Architectural lighting
 - Turn signals
 - Camcorders
 - Commercial office
 - Step-up or step-down driver topologies
 - Multiple output capability