| Parameters | 
                                                                                                            
                                            | Mfr | Analog Devices Inc./Maxim Integrated | 
                                                                            
                                            | Series | - | 
                                                                            
                                            | Package | Bulk | 
                                                                            
                                            | Product Status | Active | 
                                                                            
                                            | Battery Chemistry | Multi-Chemistry | 
                                                                            
                                            | Number of Cells | 1 ~ 4 | 
                                                                            
                                            | Current - Charging | - | 
                                                                            
                                            | Programmable Features | - | 
                                                                            
                                            | Fault Protection | - | 
                                                                            
                                            | Charge Current - Max | 3A | 
                                                                            
                                            | Battery Pack Voltage | 18.4V (Max) | 
                                                                            
                                            | Voltage - Supply (Max) | 28V | 
                                                                            
                                            | Interface | I²C, SMBus | 
                                                                            
                                            | Operating Temperature | -40°C ~ 85°C (TA) | 
                                                                            
                                            | Mounting Type | Surface Mount | 
                                                                            
                                            | Package / Case | 28-SSOP (0.154", 3.90mm Width) | 
                                                                            
                                            | Supplier Device Package | 28-QSOP | 
                                                                            
                                            | Base Product Number | MAX1645 | 
                                                                            
                                            | RoHS Status | RoHS non-compliant | 
                                                                            
                                            | Moisture Sensitivity Level (MSL) | 1  (Unlimited) | 
                                                                            
                                            | REACH Status | REACH Affected | 
                                                                            
                                            | ECCN | EAR99 | 
                                                                            
                                            | HTSUS | 8542.39.0001 | 
                                                                            
                                            | Standard Package | 1 | 
                                                                                                    
                            
                         
                                                Charger IC Multi-Chemistry 28-QSOP