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| Part Number | LTC3891MPFE#PBF | LTC3899MPFE#PBF |
|---|---|---|
| Manufacturer | Analog Devices Inc. | Analog Devices Inc. |
| Product Status | Active | Active |
| Output Type | Transistor Driver | Transistor Driver |
| Function | Step-Down | Step-Down |
| Output Configuration | Positive | Positive |
| Topology | Buck | Buck, Buck-Boost |
| Number of Outputs | 1 | 3 |
| Output Phases | 1 | 2 |
| Voltage - Supply (Vcc/Vdd) | 4V ~ 60V | 4.5V ~ 60V |
| Frequency - Switching | 105kHz ~ 835kHz, 350kHz ~ 535kHz | 105kHz ~ 835kHz, 350kHz ~ 535kHz |
| Duty Cycle (Max) | 99% | 100% |
| Synchronous Rectifier | Yes | Yes |
| Clock Sync | No | No |
| Serial Interfaces | - | - |
| Control Features | Current Limit, Enable, Frequency Control, Power Good, Soft Start, Tracking | Enable, Frequency Control, Soft Start, Tracking |
| Operating Temperature | -55°C ~ 150°C (TJ) | -55°C ~ 150°C (TJ) |
| Mounting Type | Surface Mount | Surface Mount |
| Package / Case | 20-TSSOP (0.173", 4.40mm Width) Exposed Pad | 38-TFSOP (0.173", 4.40mm Width) Exposed Pad |
| Supplier Device Package | 20-TSSOP-EP | 38-TSSOP-EP |
