| Parameters | 
                                
                                                                                                            
                                            | Surface Mount | 
                                            YES | 
                                        
                                                                            
                                            | Number of Terminals | 
                                            24 | 
                                        
                                                                            
                                            | Published | 
                                            2014 | 
                                        
                                                                            
                                            | Part Status | 
                                            Discontinued | 
                                        
                                                                            
                                            | ECCN Code | 
                                            EAR99 | 
                                        
                                                                            
                                            | HTS Code | 
                                            8542.39.00.01 | 
                                        
                                                                            
                                            | Terminal Position | 
                                            QUAD | 
                                        
                                                                            
                                            | Terminal Form | 
                                            NO LEAD | 
                                        
                                                                            
                                            | Number of Functions | 
                                            1 | 
                                        
                                                                            
                                            | Supply Voltage | 
                                            5V | 
                                        
                                                                            
                                            | Terminal Pitch | 
                                            0.5mm | 
                                        
                                                                            
                                            | Reach Compliance Code | 
                                            unknown | 
                                        
                                                                            
                                            | JESD-30 Code | 
                                            S-XQCC-N24 | 
                                        
                                                                            
                                            | Operating Temperature (Max) | 
                                            85°C | 
                                        
                                                                            
                                            | Operating Temperature (Min) | 
                                            -40°C | 
                                        
                                                                            
                                            | Supply Voltage-Max (Vsup) | 
                                            5.5V | 
                                        
                                                                            
                                            | Temperature Grade | 
                                            INDUSTRIAL | 
                                        
                                                                            
                                            | Supply Voltage-Min (Vsup) | 
                                            4.5V | 
                                        
                                                                            
                                            | Number of Channels | 
                                            4 | 
                                        
                                                                            
                                            | Analog IC - Other Type | 
                                            POWER SUPPLY SUPPORT CIRCUIT | 
                                        
                                                                            
                                            | Adjustable Threshold | 
                                            NO | 
                                        
                                                                            
                                            | Height Seated (Max) | 
                                            0.8mm | 
                                        
                                                                            
                                            | Length | 
                                            4mm | 
                                        
                                                                            
                                            | Width | 
                                            4mm | 
                                        
                                                                                                    
                            
                         
                                                ACT2801QL-T0550 Overview
A device like this uses an analog IC named POWER SUPPLY SUPPORT CIRCUIT. There are 4 channels available. This device should always be set to 5V. 5.5V is the maximal voltage supply (Vsup). A voltage greater than 4.5V is required for Vsup (supply voltage). Below 85°C is the recommended operating temperature. Over -40°C is the recommended working temperature. 
ACT2801QL-T0550 Features
operate supply voltage at the range of 5V
Supply Voltage-Max (Vsup) : 5.5V
ACT2801QL-T0550 Applications
There are a lot of Active-Semi ACT2801QL-T0550 Battery Management ICs applications. 
- Estimating the battery’s operational state
 - Robot vacuum cleaner
 - Electric cars
 - Chargers  30 kW to  150 kW
 - Tower communications
 - Motor drive - 3 phase AC400V inverter
 - Air conditioner
 - Non-road type vehicles
 - ADAS Lidar
 - Continually optimizing battery performance