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