| Part No.： | LTC3780 |
| Page： | 30 Pages |
| Size： | 338 KB |
| Manufacturer： | Linear Technology |
| Logo： |  |
| Views： | 0 |
| Update Time： | 2025-04-18 21:01:18 |
| DataSheet： | Download |
| Part No. | Packaging | SPQ | Marking | MSL | Pins | Temp Range | Package Description | Buy |
| LTC3780EG#PBF | Tube | 59 | LTC3780EG | 1 | 24 | -40°C ~ 85°C | 24-Lead Plastic SSOP | |
| LTC3780EG#TRPBF | Reel | 1800 | LTC3780EG | 1 | 24 | -40°C ~ 85°C | 24-Lead Plastic SSOP | |
| LTC3780IG#TRPBF | Tube | 59 | LTC3780IG | 1 | 24 | -40°C ~ 125°C | 24-Lead Plastic SSOP | |
| LTC3780IG#TRMPBF | Reel | 1800 | LTC3780IG | 1 | 24 | -40°C ~ 125°C | 24-Lead Plastic SSOP | |
| LTC3780MPG#PBF | Tube | 59 | LTC3780MPG | 1 | 24 | -55°C ~ 125°C | 24-Lead Plastic SSOP | |
| LTC3780MPG#TRMPBF | Reel | 1800 | LTC3780MPG | 1 | 24 | -55°C ~ 125°C | 24-Lead Plastic SSOP | |
| LTC3780EUH#PBF | Tube | 73 | 3780 | 1 | 32 | -40°C ~ 85°C | 32-Lead (5mm × 5mm) Plastic QFN | |
| LTC3780EUH#TRPBF | Reel | 2500 | 3780 | 1 | 32 | -40°C ~ 85°C | 32-Lead (5mm × 5mm) Plastic QFN | |
| LTC3780IUH#PBF | Tube | 73 | 3780I | 1 | 32 | -40°C ~ 125°C | 32-Lead (5mm × 5mm) Plastic QFN | |
| LTC3780IUH#TRPBF | Reel | 2500 | 3780I | 1 | 32 | -40°C ~ 125°C | 32-Lead (5mm × 5mm) Plastic QFN |
The LTC3780 is a high performance buck-boost switching regulator controller that operates from input voltages above, below or equal to the output voltage. The constant frequency current mode architecture allows a phase-lockable frequency of up to 400kHz. With a wide 4V to 30V (36V maximum) input and output range and seamless transfers between operating modes, the LTC3780 is ideal for automotive, telecom and battery-powered systems.
The operating mode of the controller is determined through the FCB pin. For boost operation, the FCB mode pin can select among Burst Mode® operation, discontinuous mode and forced continuous mode. During buck operation, the FCB mode pin can select among skip-cycle mode, discontinuous mode and forced continuous mode. Burst Mode operation and skip-cycle mode provide high efficiency operation at light loads while forced continuous mode and discontinuous mode operate at a constant frequency.
Fault protection is provided by an output overvoltage comparator and internal foldback current limiting. A power good output pin indicates when the output is within 7.5% of its designed set point.