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| Part Number | LTC3857EUH#PBF | LTC3858EUH#PBF | LTC3857IUH#PBF | LTC3856EUH#PBF |
|---|---|---|---|---|
| Manufacturer | Analog Devices Inc. | Analog Devices Inc. | Analog Devices Inc. | Analog Devices Inc. |
| Product Status | Active | Active | Active | Active |
| Output Type | Transistor Driver | Transistor Driver | Transistor Driver | Transistor Driver |
| Function | Step-Down | Step-Down | Step-Down | Step-Down |
| Output Configuration | Positive | Positive | Positive | Positive |
| Topology | Buck | Buck | Buck | Buck |
| Number of Outputs | 2 | 2 | 2 | 2 |
| Output Phases | 2 | 2 | 2 | 2 |
| Voltage - Supply (Vcc/Vdd) | 4V ~ 38V | 4V ~ 38V | 4V ~ 38V | 4.5V ~ 38V |
| Frequency - Switching | 105kHz ~ 835kHz, 350kHz ~ 535kHz | 105kHz ~ 835kHz, 350kHz ~ 535kHz | 105kHz ~ 835kHz, 350kHz ~ 535kHz | 250kHz ~ 770kHz |
| Duty Cycle (Max) | 99.4% | 99.4% | 99.4% | 94% |
| Synchronous Rectifier | Yes | Yes | Yes | Yes |
| Clock Sync | No | No | No | No |
| Serial Interfaces | - | - | - | - |
| Control Features | Current Limit, Enable, Frequency Control, Phase Control, Power Good, Soft Start, Tracking | Current Limit, Enable, Frequency Control, Power Good, Soft Start | Current Limit, Enable, Frequency Control, Phase Control, Power Good, Soft Start, Tracking | Current Limit, Enable, Frequency Control, Phase 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) |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| Package / Case | 32-WFQFN Exposed Pad | 32-WFQFN Exposed Pad | 32-WFQFN Exposed Pad | 32-WFQFN Exposed Pad |
| Supplier Device Package | 32-QFN (5x5) | 32-QFN (5x5) | 32-QFN (5x5) | 32-QFN (5x5) |
