| Parameters | 
                                    
                                                                                                                        
                                                | Mfr | 
                                                Monolithic Power Systems Inc. | 
                                            
                                                                                    
                                                | Series | 
                                                MP | 
                                            
                                                                                    
                                                | Package | 
                                                Tape & Reel (TR) | 
                                            
                                                                                    
                                                | Product Status | 
                                                Active | 
                                            
                                                                                    
                                                | Battery Chemistry | 
                                                Lithium Ion/Polymer | 
                                            
                                                                                    
                                                | Number of Cells | 
                                                2 | 
                                            
                                                                                    
                                                | Current - Charging | 
                                                Constant - Programmable | 
                                            
                                                                                    
                                                | Programmable Features | 
                                                Current, Timer, Voltage | 
                                            
                                                                                    
                                                | Fault Protection | 
                                                Over Temperature, Over Voltage, Short Circuit | 
                                            
                                                                                    
                                                | Charge Current - Max | 
                                                2.5A | 
                                            
                                                                                    
                                                | Battery Pack Voltage | 
                                                4.5V ~ 5.5V | 
                                            
                                                                                    
                                                | Voltage - Supply (Max) | 
                                                8.7V | 
                                            
                                                                                    
                                                | Interface | 
                                                - | 
                                            
                                                                                    
                                                | Operating Temperature | 
                                                -40°C ~ 125°C (TJ) | 
                                            
                                                                                    
                                                | Mounting Type | 
                                                Surface Mount | 
                                            
                                                                                    
                                                | Package / Case | 
                                                26-PowerVFQFN | 
                                            
                                                                                    
                                                | Supplier Device Package | 
                                                26-QFN (4x4) | 
                                            
                                                                                    
                                                | RoHS Status | 
                                                ROHS3 Compliant | 
                                            
                                                                                    
                                                | Moisture Sensitivity Level (MSL) | 
                                                1  (Unlimited) | 
                                            
                                                                                    
                                                | REACH Status | 
                                                REACH Unaffected | 
                                            
                                                                                    
                                                | Other Names | 
                                                1589-MP2639CGR-ZTR | 
                                            
                                                                                    
                                                | Standard Package | 
                                                5,000 | 
                                            
                                                                                                                
                                
                             
                                                Charger IC Lithium Ion/Polymer 26-QFN (4x4)