| Part No.： | LTC3859 |
| Page： | 42 Pages |
| Size： | 665 KB |
| Manufacturer： | Linear Technology |
| Logo： |  |
| Views： | 0 |
| Update Time： | 2024-12-15 15:21:43 |
| DataSheet： | Download |
| Part No. | Packing | SPQ | Marking | MSL | Pins | Temp Range | Package Description | Buy |
| LTC3859EFE#PBF | Tube | 50 | LTC3859FE | 1 | 38 | -40°C ~ 125°C | 38-Lead Plastic TSSOP | |
| LTC3859EFE#TRPBF | Reel | 2000 | LTC3859FE | 1 | 38 | -40°C ~ 125°C | 38-Lead Plastic TSSOP | |
| LTC3859IFE#PBF | Tube | 50 | LTC3859FE | 1 | 38 | -40°C ~ 125°C | 38-Lead Plastic TSSOP | |
| LTC3859IFE#TRPBF | Reel | 2000 | LTC3859FE | 1 | 38 | -40°C ~ 125°C | 38-Lead Plastic TSSOP | |
| LTC3859EUHF#PBF | Tube | 52 | 3859 | 1 | 38 | -40°C ~ 125°C | 38-Lead (5mm × 7mm) Plastic QFN | |
| LTC3859EUHF#TRPBF | Reel | 2500 | 3859 | 1 | 38 | -40°C ~ 125°C | 38-Lead (5mm × 7mm) Plastic QFN | |
| LTC3859IUHF#PBF | Tube | 52 | 3859 | 1 | 38 | -40°C ~ 125°C | 38-Lead (5mm × 7mm) Plastic QFN | |
| LTC3859IUHF#TRPBF | Reel | 2500 | 3859 | 1 | 38 | -40°C ~ 125°C | 38-Lead (5mm × 7mm) Plastic QFN |
The LTC3859 is a high performance triple output (buck/ buck/boost) synchronous DC/DC switching regulator controller that drives all N-channel power MOSFET stages. Constant frequency current mode architecture allows a phase-lockable switching frequency of up to 850kHz. The LTC3859 operates from a wide 4.5V to 38V input supply range. When biased from the output of the boost converter or another auxiliary supply, the LTC3859 can operate from an input supply as low as 2.5V after start-up.
The 55μA no-load quiescent current extends operating runtime 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 LTC3859 features a precision 0.8V reference for the bucks, 1.2V reference for the boost and a power good output indicator.
Independent TRACK/SS pins for each controller ramp 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 inductor current mode at light loads.
