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| Part Number | FAN5421BUCX |
| Datasheet | FAN5421BUCX datasheet |
| Description | IC USB CHARGER LI-ION 20WLCSP |
| Manufacturer | ON Semiconductor |
| Series | - |
| Part Status | Not For New Designs |
| Battery Chemistry | Lithium-Ion/Polymer |
| Number of Cells | 1 |
| Current - Charging | Constant - Programmable |
| Programmable Features | Current, Timer, Voltage |
| Fault Protection | Over Temperature, Over Voltage, Short Circuit |
| Charge Current - Max | 1.5A |
| Battery Pack Voltage | - |
| Voltage - Supply (Max) | 6.8V |
| Interface | I²C |
| Operating Temperature | -30°C ~ 85°C (TA) |
| Package / Case | Surface Mount |
| Supplier Device Package | 20-UFBGA, WLCSP |
| Base Part Number | 20-WLCSP (1.96x1.56) |