| Part No.： | LTC3649 |
| Page： | 26 Pages |
| Size： | 1623 KB |
| Manufacturer： | Linear Technology |
| Logo： |  |
| Views： | 1 |
| Update Time： | 2023-09-20 10:28:26 |
| DataSheet： | Download |
| Part No. | Packing | SPQ | Marking | MSL | Pins | Temp Range | Package Description | Buy |
| LTC3649EUFD#PBF | Tube | 73 | 3649 | 1 | 28 | -40°C ~ 125°C | 28-Lead (4mm × 5mm) Plastic QFN | |
| LTC3649EUFD#TRPBF | Reel | 2500 | 3649 | 1 | 28 | -40°C ~ 125°C | 28-Lead (4mm × 5mm) Plastic QFN | |
| LTC3649EUFD#TRMPBF | Reel | 500 | 3649 | 1 | 28 | -40°C ~ 125°C | 28-Lead (4mm × 5mm) Plastic QFN | |
| LTC3649IUFD#PBF | Tube | 73 | 3649 | 1 | 28 | -40°C ~ 125°C | 28-Lead (4mm × 5mm) Plastic QFN | |
| LTC3649IUFD#TRPBF | Reel | 2500 | 3649 | 1 | 28 | -40°C ~ 125°C | 28-Lead (4mm × 5mm) Plastic QFN | |
| LTC3649IUFD#TRMPBF | Reel | 500 | 3649 | 1 | 28 | -40°C ~ 125°C | 28-Lead (4mm × 5mm) Plastic QFN | |
| LTC3649EFE#PBF | Tube | 50 | LTC3649 | 1 | 28 | -40°C ~ 125°C | 28-Lead Plastic TSSOP | |
| LTC3649EFE#TRPBF | Reel | 2000 | LTC3649 | 1 | 28 | -40°C ~ 125°C | 28-Lead Plastic TSSOP | |
| LTC3649EFE#TRMPBF | Reel | 500 | LTC3649 | 1 | 28 | -40°C ~ 125°C | 28-Lead Plastic TSSOP | |
| LTC3649IFE#PBF | Tube | 50 | LTC3649 | 1 | 28 | -40°C ~ 125°C | 28-Lead Plastic TSSOP | |
| LTC3649IFE#TRPBF | Reel | 2000 | LTC3649 | 1 | 28 | -40°C ~ 125°C | 28-Lead Plastic TSSOP | |
| LTC3649IFE#TRMPBF | Reel | 500 | LTC3649 | 1 | 28 | -40°C ~ 125°C | 28-Lead Plastic TSSOP |
The LTC3649 is a high efficiency 60V, 4A synchronous monolithic step-down regulator. The regulator features a single resistor programmable output voltage, internal compensation and high efficiencies over a wide VOUT range.
The step-down regulator operates from an input voltage range of 3.1V to 60V and provides an adjustable rail-to-rail output range from (VIN – 0.5V) to ground while delivering up to 4A of output current. The switching frequency is also adjusted with an external resistor. A user-selectable mode input is provided to allow the user to trade off ripple noise for efficiency at light loads; Burst Mode operation provides the highest efficiency at light loads, while forced continuous mode provides low output ripple. The MODE/SYNC pin can also be used to allow the user to synchronize the switching frequency to an external clock.
The LTC3649 operates with a peak current mode architecture that allows for fast transient response with inherent cycle-to-cycle current limit protection. It also features programmable output current limit, current monitoring and input voltage regulation.
