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| Part Number | LT3971IMSE#TRPBF | LT3973IMSE#TRPBF | LT3991IMSE#TRPBF | LT3975IMSE#TRPBF | LT3976IMSE#TRPBF | LT3972IMSE#TRPBF | LT3971AIMSE#TRPBF | LT3971EMSE#TRPBF |
|---|---|---|---|---|---|---|---|---|
| Manufacturer | Analog Devices Inc. | Analog Devices Inc. | 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 | Active | Active |
| Function | Step-Down | Step-Down | Step-Down | Step-Down | Step-Down | Step-Down | Step-Down | Step-Down |
| Output Configuration | Positive | Positive | Positive | Positive | Positive | Positive | Positive | Positive |
| Topology | Buck | Buck | Buck | Buck | Buck | Buck | Buck | Buck |
| Output Type | Adjustable | Adjustable | Adjustable | Adjustable | Adjustable | Adjustable | Adjustable | Adjustable |
| Number of Outputs | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Voltage - Input (Min) | 4.3V | 4.2V | 4.3V | 4.3V | 4.3V | 3.6V | 4.3V | 4.3V |
| Voltage - Input (Max) | 38V | 42V | 55V | 42V | 40V | 33V | 38V | 38V |
| Voltage - Output (Min/Fixed) | 1.19V | 1.21V | 1.19V | 1.197V | 1.197V | 0.79V | 1.19V | 1.19V |
| Voltage - Output (Max) | 30V | 24V | 30V | 40.74V | 38.8V | 30V | 30V | 30V |
| Current - Output | 1.2A | 750mA | 1.2A | 2.5A | 5A | 3.5A | 1.2A | 1.2A |
| Frequency - Switching | 200kHz ~ 2MHz | 195kHz ~ 2.15MHz | 200kHz ~ 2MHz | 200kHz ~ 2.25MHz | 200kHz ~ 2.25MHz | 230kHz ~ 2.45MHz | 200kHz ~ 2MHz | 200kHz ~ 2MHz |
| Synchronous Rectifier | No | No | No | 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) | -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 | 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 | 16-TFSOP (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 | 16-MSOP-EP | 16-MSOP-EP | 10-MSOP-EP | 10-MSOP-EP | 10-MSOP-EP |
