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| Part Number | FAN53555BUC18X | FAN53555UC18X | FAN53555BUC08X | FAN53555BUC13X |
|---|---|---|---|---|
| Manufacturer | Fairchild Semiconductor | Fairchild Semiconductor | Fairchild Semiconductor | Fairchild Semiconductor |
| Product Status | Active | Active | Active | Active |
| Function | Step-Down | Step-Down | Step-Down | Step-Down |
| Output Configuration | Positive | Positive | Positive | Positive |
| Topology | Buck | Buck | Buck | Buck |
| Output Type | Programmable | Programmable | Programmable | Programmable |
| Number of Outputs | 1 | 1 | 1 | 1 |
| Voltage - Input (Min) | 2.5V | 2.5V | 2.5V | 2.5V |
| Voltage - Input (Max) | 5.5V | 5.5V | 5.5V | 5.5V |
| Voltage - Output (Min/Fixed) | 0.6V | 0.6V | 0.6V | 0.8V |
| Voltage - Output (Max) | 1.23V | 1.23V | 1.23V | 1.43V |
| Current - Output | 5A | 5A | 4A | 5A |
| Frequency - Switching | 2.4MHz | 2.4MHz | 2.4MHz | 2.4MHz |
| Synchronous Rectifier | Yes | Yes | Yes | Yes |
| Operating Temperature | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| Package / Case | 20-UFBGA, WLCSP | 20-UFBGA, WLCSP | 20-UFBGA, WLCSP | 20-UFBGA, WLCSP |
| Supplier Device Package | 20-WLCSP (1.96x1.56) | 20-WLCSP (1.96x1.56) | 20-WLCSP (1.96x1.56) | 20-WLCSP (1.96x1.56) |
