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| Part Number | LT3840IFE#PBF | LT3845IFE#PBF | LT3840IUFE#PBF | LT3844IFE#PBF | LT3800IFE#PBF | LT3840EFE#PBF | LT3840HFE#PBF |
|---|---|---|---|---|---|---|---|
| Manufacturer | 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 |
| Output Type | Transistor Driver | Transistor Driver | Transistor Driver | Transistor Driver | Transistor Driver | Transistor Driver | Transistor Driver |
| Function | Step-Down | Step-Down | Step-Down | Step-Up, Step-Down, Step-Up/Step-Down | Step-Down | Step-Down | Step-Down |
| Output Configuration | Positive or Negative | Positive | Positive or Negative | Positive or Negative | Positive or Negative | Positive or Negative | Positive or Negative |
| Topology | Buck | Buck | Buck | Buck, Boost, SEPIC | Buck | Buck | Buck |
| Number of Outputs | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Output Phases | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Voltage - Supply (Vcc/Vdd) | 2.5V ~ 60V | 4V ~ 60V | 2.5V ~ 60V | 4V ~ 60V | 4V ~ 60V | 2.5V ~ 60V | 2.5V ~ 60V |
| Frequency - Switching | 50kHz ~ 1MHz | 300kHz | 50kHz ~ 1MHz | 300kHz | 200kHz | 50kHz ~ 1MHz | 50kHz ~ 1MHz |
| Duty Cycle (Max) | 99% | - | 99% | - | - | 99% | 99% |
| Synchronous Rectifier | Yes | Yes | Yes | No | Yes | Yes | Yes |
| Clock Sync | Yes | Yes | Yes | Yes | No | Yes | Yes |
| Serial Interfaces | - | - | - | - | - | - | - |
| Control Features | Enable, Frequency Control, Power Good, Soft Start, Tracking | Enable, Frequency Control, Soft Start | Enable, Frequency Control, Power Good, Soft Start, Tracking | Enable, Frequency Control, Soft Start | Enable | Enable, Frequency Control, Power Good, Soft Start, Tracking | Enable, Frequency Control, Power Good, Soft Start, Tracking |
| 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 ~ 150°C (TJ) |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| Package / Case | 28-TSSOP (0.173", 4.40mm Width) Exposed Pad | 16-TSSOP (0.173", 4.40mm Width) Exposed Pad | 38-WFQFN Exposed Pad | 16-TSSOP (0.173", 4.40mm Width) Exposed Pad | 16-TSSOP (0.173", 4.40mm Width) Exposed Pad | 28-TSSOP (0.173", 4.40mm Width) Exposed Pad | 28-TSSOP (0.173", 4.40mm Width) Exposed Pad |
| Supplier Device Package | 28-TSSOP-EP | 16-TSSOP-EP | 38-QFN (4x6) | 16-TSSOP-EP | 16-TSSOP-EP | 28-TSSOP-EP | 28-TSSOP-EP |
