FAN5405UCX-ON onsemi

Description: IC BATT CHG LI-ION 1CELL 20WLCSP, Part Status: Active, Current - Charging: Constant - Programmable, Battery Pack Voltage: 4.5V (Max), Voltage - Supply (Max): 6V, Fault Protection: Over Temperature, Over Voltage, Short Circuit, Programmable Features: Current, Timer, Voltage, Charge Current - Max: 1.25A, Supplier Device Package: 20-WLCSP (1.96x1.56), Battery Chemistry: Lithium Ion/Polymer, Operating Temperature: -30°C ~ 85°C (TA), Interface: I2C, USB, Mounting Type: Surface Mount, Number of Cells: 1, Package / Case: 20-UFBGA, WLCSP, Packaging: Bulk.