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| Part Number | LTC3859AHFE | LTC3859AIFE | LTC3859ALHFE | LTC3859AEFE |
|---|---|---|---|---|
| Manufacturer | Analog Devices Inc. | Analog Devices Inc. | Analog Devices Inc. | Analog Devices Inc. |
| Product Status | Obsolete | Obsolete | Obsolete | Obsolete |
| Output Type | Transistor Driver | Transistor Driver | Transistor Driver | Transistor Driver |
| Function | Step-Down, Step-Up/Step-Down | Step-Down, Step-Up/Step-Down | Step-Down, Step-Up/Step-Down | Step-Down, Step-Up/Step-Down |
| Output Configuration | Positive | Positive | Positive | Positive |
| Topology | Buck, Buck-Boost, SEPIC | Buck, Buck-Boost, SEPIC | Buck, Buck-Boost, SEPIC | Buck, Buck-Boost, SEPIC |
| Number of Outputs | 3 | 3 | 3 | 3 |
| Output Phases | 2 | 2 | 2 | 2 |
| Voltage - Supply (Vcc/Vdd) | 4.5V ~ 38V | 4.5V ~ 38V | 4.5V ~ 38V | 4.5V ~ 38V |
| Frequency - Switching | 115kHz ~ 835kHz, 350kHz ~ 535kHz | 115kHz ~ 835kHz, 350kHz ~ 535kHz | 115kHz ~ 835kHz, 350kHz ~ 535kHz | 115kHz ~ 835kHz, 350kHz ~ 535kHz |
| Duty Cycle (Max) | 99%, 100% | 99%, 100% | 99%, 100% | 99%, 100% |
| Synchronous Rectifier | Yes | Yes | Yes | Yes |
| Clock Sync | No | No | No | No |
| Serial Interfaces | - | - | - | - |
| Control Features | Enable, Frequency Control, Power Good, Soft Start, Tracking | Enable, Frequency Control, Power Good, Soft Start, Tracking | Enable, Frequency Control, Power Good, Soft Start, Tracking | Enable, Frequency Control, Power Good, Soft Start, Tracking |
| Operating Temperature | -40°C ~ 150°C (TJ) | -40°C ~ 125°C (TJ) | -40°C ~ 150°C (TJ) | -40°C ~ 125°C (TJ) |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| Package / Case | 38-TFSOP (0.173", 4.40mm Width) Exposed Pad | 38-TFSOP (0.173", 4.40mm Width) Exposed Pad | 38-TFSOP (0.173", 4.40mm Width) Exposed Pad | 38-TFSOP (0.173", 4.40mm Width) Exposed Pad |
| Supplier Device Package | 38-TSSOP-EP | 38-TSSOP-EP | 38-TSSOP-EP | 38-TSSOP-EP |
