| Part Number | LT3641IUFD#PBF | LT3641EUFD#PBF | 
|---|---|---|
| Manufacturer | Analog Devices Inc. | Analog Devices Inc. | 
| Category | PMIC - Voltage Regulators - DC DC Switching Regulators | PMIC - Voltage Regulators - DC DC Switching Regulators | 
|   |   | |
| Product Status | Active | Active | 
| Function | Step-Down | Step-Down | 
| Output Configuration | Positive | Positive | 
| Topology | Buck | Buck | 
| Output Type | Adjustable | Adjustable | 
| Number of Outputs | 2 | 2 | 
| Voltage - Input (Min) | 2.5V | 2.5V | 
| Voltage - Input (Max) | 42V | 42V | 
| Voltage - Output (Min/Fixed) | 0.6V, 1.265V | 0.6V, 1.265V | 
| Voltage - Output (Max) | 39.48V | 39.48V | 
| Current - Output | 1.3A, 1.1A | 1.3A, 1.1A | 
| Frequency - Switching | 500kHz ~ 2MHz | 500kHz ~ 2MHz | 
| Synchronous Rectifier | Both | Both | 
| Operating Temperature | -40°C ~ 125°C (TJ) | -40°C ~ 125°C (TJ) | 
| Mounting Type | Surface Mount | Surface Mount | 
| Package / Case | 28-WFQFN Exposed Pad | 28-WFQFN Exposed Pad | 
| Supplier Device Package | 28-QFN (4x5) | 28-QFN (4x5) |