| Part No.： | LTC3891 |
| Page： | 32 Pages |
| Size： | 671 KB |
| Manufacturer： | Linear Technology |
| Logo： |  |
| Views： | 1 |
| Update Time： | 2023-11-02 11:50:15 |
| DataSheet： | Download |
| Part No. | Packing | SPQ | Marking | MSL | Pins | Temp Range | Package Description | Buy |
| LTC3891EUDC#PBF | Tube | 91 | LFXV | 1 | 20 | -40°C ~ 125°C | 20-Lead (3mm × 4mm) Plastic QFN | |
| LTC3891EUDC#TRPBF | Reel | 2500 | LFXV | 1 | 20 | -40°C ~ 125°C | 20-Lead (3mm × 4mm) Plastic QFN | |
| LTC3891EUDC#TRMPBF | Reel | 500 | LFXV | 1 | 20 | -40°C ~ 125°C | 20-Lead (3mm × 4mm) Plastic QFN | |
| LTC3891IUDC#PBF | Tube | 91 | LFXV | 1 | 20 | -40°C ~ 125°C | 20-Lead (3mm × 4mm) Plastic QFN | |
| LTC3891IUDC#TRPBF | Reel | 2000 | LFXV | 1 | 20 | -40°C ~ 125°C | 20-Lead (3mm × 4mm) Plastic QFN | |
| LTC3891IUDC#TRMPBF | Reel | 500 | LFXV | 1 | 20 | -40°C ~ 125°C | 20-Lead (3mm × 4mm) Plastic QFN | |
| LTC3891HUDC#PBF | Tube | 91 | LFXV | 1 | 20 | -40°C ~ 150°C | 20-Lead (3mm × 4mm) Plastic QFN | |
| LTC3891HUDC#TRPBF | Reel | 2500 | LFXV | 1 | 20 | -40°C ~ 150°C | 20-Lead (3mm × 4mm) Plastic QFN | |
| LTC3891HUDC#TRMPBF | Reel | 500 | LFXV | 1 | 20 | -40°C ~ 150°C | 20-Lead (3mm × 4mm) Plastic QFN | |
| LTC3891MPUDC#PBF | Tube | 91 | LFXV | 1 | 20 | -55°C ~ 150°C | 20-Lead (3mm × 4mm) Plastic QFN | |
| LTC3891MPUDC#TRPBF | Reel | 2500 | LFXV | 1 | 20 | -55°C ~ 150°C | 20-Lead (3mm × 4mm) Plastic QFN | |
| LTC3891MPUDC#TRMPBF | Reel | 500 | LFXV | 1 | 20 | -55°C ~ 150°C | 20-Lead (3mm × 4mm) Plastic QFN | |
| LTC3891EFE#PBF | Tube | 74 | LTC3891FE | 1 | 20 | -40°C ~ 125°C | 20-Lead Plastic TSSOP | |
| LTC3891EFE#TRPBF | Reel | 2500 | LTC3891FE | 1 | 20 | -40°C ~ 125°C | 20-Lead Plastic TSSOP | |
| LTC3891EFE#TRMPBF | Reel | 500 | LTC3891FE | 1 | 20 | -40°C ~ 125°C | 20-Lead Plastic TSSOP | |
| LTC3891IFE#PBF | Tube | 74 | LTC3891FE | 1 | 20 | -40°C ~ 125°C | 20-Lead Plastic TSSOP | |
| LTC3891IFE#TRPBF | Reel | 2500 | LTC3891FE | 1 | 20 | -40°C ~ 125°C | 20-Lead Plastic TSSOP | |
| LTC3891IFE#TRMPBF | Reel | 500 | LTC3891FE | 1 | 20 | -40°C ~ 125°C | 20-Lead Plastic TSSOP | |
| LTC3891HFE#PBF | Tube | 74 | LTC3891FE | 1 | 20 | -40°C ~ 150°C | 20-Lead Plastic TSSOP | |
| LTC3891HFE#TRPBF | Reel | 2500 | LTC3891FE | 1 | 20 | -40°C ~ 150°C | 20-Lead Plastic TSSOP | |
| LTC3891HFE#TRMPBF | Reel | 500 | LTC3891FE | 1 | 20 | -40°C ~ 150°C | 20-Lead Plastic TSSOP | |
| LTC3891MPFE#PBF | Tube | 74 | LTC3891FE | 1 | 20 | -55°C ~ 150°C | 20-Lead Plastic TSSOP | |
| LTC3891MPFE#TRPBF | Reel | 2500 | LTC3891FE | 1 | 20 | -55°C ~ 150°C | 20-Lead Plastic TSSOP | |
| LTC3891MPFE#TRMPBF | Reel | 500 | LTC3891FE | 1 | 20 | -55°C ~ 150°C | 20-Lead Plastic TSSOP |
The LTC3891 is a high performance step-down switching regulator DC/DC controller that drives an all N-channel synchronous power MOSFET stage. A constant frequency current mode architecture allows a phase-lockable frequency of up to 750kHz.
The 50μA no-load quiescent current extends operating run time in battery-powered systems. OPTI-LOOP® compensation allows the transient response to be optimized over a wide range of output capacitance and ESR values. The LTC3891 features a precision 0.8V reference and power good output indicator. A wide 4V to 60V input supply range encompasses a wide range of intermediate bus voltages and battery chemistries. The output voltage of the LTC3891 can be programmed between 0.8V to 24V.
The TRACK/SS pin ramps the output voltages during start-up. Current foldback limits MOSFET heat dissipation during short-circuit conditions. The PLLIN/MODE pin selects among Burst Mode operation, pulse-skipping mode, or continuous conduction mode at light loads.
