| Part Number | FAN5403BUCX | FAN5405BUCX |
|---|---|---|
| Manufacturer | Fairchild Semiconductor | Fairchild Semiconductor |
| Category | PMIC - Battery Chargers | PMIC - Battery Chargers |
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| Product Status | Active | Active |
| Battery Chemistry | Lithium Ion/Polymer | Lithium Ion/Polymer |
| Number of Cells | 1 | 1 |
| Current - Charging | Constant - Programmable | Constant - Programmable |
| Programmable Features | Current, Timer, Voltage | Current, Timer, Voltage |
| Fault Protection | Over Temperature, Over Voltage, Short Circuit | Over Temperature, Over Voltage, Short Circuit |
| Charge Current - Max | 1.25A | 1.25A |
| Battery Pack Voltage | 4.5V (Max) | 4.5V (Max) |
| Voltage - Supply (Max) | 6V | 6V |
| Interface | I²C, USB | I²C, USB |
| Operating Temperature | -30°C ~ 85°C (TA) | -30°C ~ 85°C (TA) |
| Mounting Type | Surface Mount | Surface Mount |
| Package / Case | 20-UFBGA, WLCSP | 20-UFBGA, WLCSP |
| Supplier Device Package | 20-WLCSP (1.96x1.56) | 20-WLCSP (1.96x1.56) |