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| Part Number | LTC3521EUF#TRPBF | LTC3521IUF#TRPBF | LTC3421EUF#TRPBF | LTC3520EUF#TRPBF |
|---|---|---|---|---|
| Manufacturer | Analog Devices Inc. | Analog Devices Inc. | Analog Devices Inc. | Analog Devices Inc. |
| Product Status | Active | Active | Active | Active |
| Function | Step-Down, Step-Up/Step-Down | Step-Down, Step-Up/Step-Down | Step-Up | Step-Down, Step-Up/Step-Down |
| Output Configuration | Positive | Positive | Positive | Positive |
| Topology | Buck, Buck-Boost | Buck, Buck-Boost | Boost | Buck, Buck-Boost |
| Output Type | Adjustable | Adjustable | Adjustable | Adjustable |
| Number of Outputs | 3 | 3 | 1 | 2 |
| Voltage - Input (Min) | 1.8V | 1.8V | 0.5V | 2.2V |
| Voltage - Input (Max) | 5.5V | 5.5V | 4.5V | 5.5V |
| Voltage - Output (Min/Fixed) | 0.6V | 0.6V | 2.4V | 0.8V |
| Voltage - Output (Max) | 5.5V | 5.5V | 5.25V | 5.5V |
| Current - Output | 600mA, 1A | 600mA, 1A | 1A (Switch) | 600mA, 1A |
| Frequency - Switching | 1.1MHz | 1.1MHz | 100kHz ~ 3MHz | 100kHz ~ 2MHz |
| Synchronous Rectifier | Yes | Yes | No | Yes |
| Operating Temperature | -40°C ~ 125°C (TJ) | -40°C ~ 125°C (TJ) | -40°C ~ 85°C (TA) | -40°C ~ 125°C (TJ) |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| Package / Case | 24-WFQFN Exposed Pad | 24-WFQFN Exposed Pad | 24-WFQFN Exposed Pad | 24-WFQFN Exposed Pad |
| Supplier Device Package | 24-QFN (4x4) | 24-QFN (4x4) | 24-QFN (4x4) | 24-QFN (4x4) |
