| Parameters | 
                                
                                                                                                            
                                            | Factory Lead Time | 
                                            12 Weeks | 
                                        
                                                                            
                                            | Mounting Type | 
                                            Surface Mount | 
                                        
                                                                            
                                            | Package / Case | 
                                            16-WFQFN Exposed Pad | 
                                        
                                                                            
                                            | Surface Mount | 
                                            YES | 
                                        
                                                                            
                                            | Operating Temperature | 
                                            -40°C~125°C TJ | 
                                        
                                                                            
                                            | Packaging | 
                                            Tape & Reel (TR) | 
                                        
                                                                            
                                            | JESD-609 Code | 
                                            e3 | 
                                        
                                                                            
                                            | Part Status | 
                                            Active | 
                                        
                                                                            
                                            | Moisture Sensitivity Level (MSL) | 
                                            1  (Unlimited) | 
                                        
                                                                            
                                            | Number of Terminations | 
                                            16 | 
                                        
                                                                            
                                            | Terminal Finish | 
                                            Matte Tin (Sn) | 
                                        
                                                                            
                                            | Terminal Position | 
                                            QUAD | 
                                        
                                                                            
                                            | Terminal Form | 
                                            NO LEAD | 
                                        
                                                                            
                                            | Peak Reflow Temperature (Cel) | 
                                            NOT SPECIFIED | 
                                        
                                                                            
                                            | Number of Functions | 
                                            1 | 
                                        
                                                                            
                                            | Supply Voltage | 
                                            15V | 
                                        
                                                                            
                                            | Terminal Pitch | 
                                            0.5mm | 
                                        
                                                                            
                                            | Time@Peak Reflow Temperature-Max (s) | 
                                            NOT SPECIFIED | 
                                        
                                                                            
                                            | Base Part Number | 
                                            LTC4121 | 
                                        
                                                                            
                                            | Pin Count | 
                                            16 | 
                                        
                                                                            
                                            | JESD-30 Code | 
                                            S-PQCC-N16 | 
                                        
                                                                            
                                            | Analog IC - Other Type | 
                                            BATTERY CHARGE CONTROLLER | 
                                        
                                                                            
                                            | Adjustable Threshold | 
                                            YES | 
                                        
                                                                            
                                            | Threshold Voltage | 
                                            +2.21 | 
                                        
                                                                            
                                            | Battery Chemistry | 
                                            Lithium Ion/Polymer | 
                                        
                                                                            
                                            | Voltage - Supply (Max) | 
                                            40V | 
                                        
                                                                            
                                            | Current - Charging | 
                                            Constant - Programmable | 
                                        
                                                                            
                                            | Charge Current - Max | 
                                            400mA | 
                                        
                                                                            
                                            | Battery Pack Voltage | 
                                            4.2V | 
                                        
                                                                            
                                            | Height Seated (Max) | 
                                            0.8mm | 
                                        
                                                                            
                                            | Length | 
                                            3mm | 
                                        
                                                                            
                                            | Width | 
                                            3mm | 
                                        
                                                                            
                                            | RoHS Status | 
                                            ROHS3 Compliant | 
                                        
                                                                                                    
                            
                         
                                                LTC4121EUD-4.2#TRPBF Overview
There is a package called Tape & Reel (TR) that contains this item.There is currently a package available named 16-WFQFN Exposed Pad.It appears that the device's mounting type is Surface Mount.Ideally, the temperature should be set to -40°C~125°C TJ in order to ensure reliable performance.Analog IC BATTERY CHARGE CONTROLLER is responsible for implementing the device.To charge the device, a current of Constant - Programmable is required.If you use the base part number LTC4121, you can look for related parts.The number of terminations found in it is 16 as a whole.The battery pack is set to 4.2V when it comes to the battery.16 pins are on it in total.The device has a maximum charging current of 400mA.There is a maximum voltage requirement for devices of 40V.It should be able to run off of a 15V battery.
LTC4121EUD-4.2#TRPBF Features
Battery pack voltage of 4.2V
16-WFQFN Exposed Pad package
LTC4121EUD-4.2#TRPBF Applications
There are a lot of Linear Technology/Analog Devices LTC4121EUD-4.2#TRPBF Battery Chargers ICs applications. 
- Charging cradle for wearable devices
 - TV sticks
 - Rental fleets
 - Mobile lighting
 - Truck dealers
 - GPS portable devices
 - Man lift
 - Portable speaker systems
 - Model aircraft
 - Marine buoy lights