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| Part Number | LT3971IMSE-5#PBF | LT3973IMSE-5#PBF | LT3991IMSE-5#PBF | LT3971AIMSE-5#PBF | LT3971EMSE-5#PBF |
|---|---|---|---|---|---|
| Manufacturer | Analog Devices Inc. | Analog Devices Inc. | Analog Devices Inc. | Linear Technology | Analog Devices Inc. |
| Product Status | Active | Active | Active | Obsolete | Active |
| Function | Step-Down | Step-Down | Step-Down | Step-Down | Step-Down |
| Output Configuration | Positive | Positive | Positive | Positive | Positive |
| Topology | Buck | Buck | Buck | Buck | Buck |
| Output Type | Fixed | Fixed | Fixed | Fixed | Fixed |
| Number of Outputs | 1 | 1 | 1 | 1 | 1 |
| Voltage - Input (Min) | 4.3V | 4.2V | 4.3V | 4V | 4.3V |
| Voltage - Input (Max) | 38V | 42V | 55V | 38V | 38V |
| Voltage - Output (Min/Fixed) | 5V | 5V | 5V | 5V | 5V |
| Voltage - Output (Max) | - | - | - | - | - |
| Current - Output | 1.2A | 750mA | 1.2A | 1.3A | 1.2A |
| Frequency - Switching | 200kHz ~ 2MHz | 195kHz ~ 2.15MHz | 200kHz ~ 2MHz | 200kHz ~ 2MHz | 200kHz ~ 2MHz |
| Synchronous Rectifier | No | No | No | No | No |
| Operating Temperature | -40°C ~ 125°C (TJ) | -40°C ~ 125°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 |
| 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 | 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) Exposed Pad | 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) Exposed Pad |
| Supplier Device Package | 10-MSOP-EP | 10-MSOP-EP | 10-MSOP-EP | 10-MSOP-EP | 10-MSOP-EP |
