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| Part Number | LT3999EMSE#PBF | LT3999IMSE#PBF | LT3999HMSE#PBF | LT3990EMSE#PBF | LT3991EMSE#PBF | LT3995EMSE#PBF |
|---|---|---|---|---|---|---|
| Manufacturer | Analog Devices Inc. | Analog Devices Inc. | Analog Devices Inc. | Analog Devices Inc. | Analog Devices Inc. | Analog Devices Inc. |
| Product Status | Active | Active | Active | Active | Active | Active |
| Function | Step-Up/Step-Down | Step-Up/Step-Down | Step-Up/Step-Down | Step-Down | Step-Down | Step-Down |
| Output Configuration | Positive, Isolation Capable | Positive, Isolation Capable | Positive, Isolation Capable | Positive | Positive | Positive |
| Topology | Push-Pull | Push-Pull | Push-Pull | Buck | Buck | Buck |
| Output Type | Adjustable | Adjustable | Adjustable | Adjustable | Adjustable | Adjustable |
| Number of Outputs | 1 | 1 | 1 | 1 | 1 | 1 |
| Voltage - Input (Min) | 2.7V | 2.7V | 2.7V | 4.2V | 4.3V | 4.3V |
| Voltage - Input (Max) | 36V | 36V | 36V | 62V | 55V | 60V |
| Voltage - Output (Min/Fixed) | - | - | - | 1.21V | 1.19V | 1.197V |
| Voltage - Output (Max) | - | - | - | 25V | 30V | 55.8V |
| Current - Output | 1A | 1A | 1A | 350mA | 1.2A | 3A |
| Frequency - Switching | 50kHz ~ 1MHz | 50kHz ~ 1MHz | 50kHz ~ 1MHz | 210kHz ~ 2.3MHz | 200kHz ~ 2MHz | 200kHz ~ 2.25MHz |
| Synchronous Rectifier | No | No | No | No | No | No |
| Operating Temperature | -40°C ~ 125°C (TJ) | -40°C ~ 125°C (TJ) | -40°C ~ 150°C (TJ) | -40°C ~ 125°C (TJ) | -40°C ~ 125°C (TJ) | -40°C ~ 125°C (TJ) |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| Package / Case | 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) Exposed Pad | 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) Exposed Pad | 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) Exposed Pad | 16-TFSOP (0.118", 3.00mm Width) Exposed Pad | 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) Exposed Pad | 16-TFSOP (0.118", 3.00mm Width) Exposed Pad |
| Supplier Device Package | 10-MSOP-EP | 10-MSOP-EP | 10-MSOP-EP | 16-MSOP-EP | 10-MSOP-EP | 16-MSOP-EP |
