LTC3731CG#TRPBF
ActiveSWITCHING VOLTAGE REGULATORS 3-PHASE, 600KHZ, SYNC BUCK SW REG CNTR
Deep-Dive with AI
Search across all available documentation for this part.
LTC3731CG#TRPBF
ActiveSWITCHING VOLTAGE REGULATORS 3-PHASE, 600KHZ, SYNC BUCK SW REG CNTR
Deep-Dive with AI
Technical Specifications
Parameters and characteristics for this part
| Specification | LTC3731CG#TRPBF |
|---|---|
| Clock Sync | False |
| Control Features | Phase Control, Soft Start, Power Good, Enable |
| Duty Cycle (Max) [Max] | 98.5 % |
| Frequency - Switching [Max] | 680 kHz |
| Frequency - Switching [Min] | 225 kHz |
| Function | Step-Down |
| Mounting Type | Surface Mount |
| Number of Outputs | 3 |
| Operating Temperature [Max] | 70 °C |
| Operating Temperature [Min] | 0 °C |
| Output Configuration | Positive |
| Output Phases | 3 |
| Output Type | Transistor Driver |
| Package / Case | 36-SSOP |
| Package / Case [x] | 0.209 in |
| Package / Case [x] | 5.3 mm |
| Supplier Device Package | 36-SSOP |
| Synchronous Rectifier | True |
| Topology | Buck |
| Voltage - Supply (Vcc/Vdd) [Max] | 7 V |
| Voltage - Supply (Vcc/Vdd) [Min] | 3.8 V |
LTC3731 Series
3-Phase, 600kHz, Synchronous Buck Switching Regulator Controller
| Part | Number of Outputs | Duty Cycle (Max) [Max] | Voltage - Supply (Vcc/Vdd) [Min] | Voltage - Supply (Vcc/Vdd) [Max] | Synchronous Rectifier | Mounting Type | Supplier Device Package | Clock Sync | Operating Temperature [Max] | Operating Temperature [Min] | Control Features | Output Phases | Frequency - Switching [Min] | Frequency - Switching [Max] | Output Configuration | Output Type | Function | Topology | Package / Case [x] | Package / Case [x] | Package / Case |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 Analog Devices Inc./Maxim Integrated | 3 | 98.5 % | 3.8 V | 7 V | Surface Mount | 32-QFN (5x5) | 85 C | -40 ¯C | Enable Phase Control Power Good Soft Start | 3 | 225 kHz | 680 kHz | Positive | Transistor Driver | Step-Down | Buck | |||||
Analog Devices Inc./Maxim Integrated | 3 | 98.5 % | 3.8 V | 7 V | Surface Mount | 36-SSOP | 70 °C | 0 °C | Enable Phase Control Power Good Soft Start | 3 | 225 kHz | 680 kHz | Positive | Transistor Driver | Step-Down | Buck | 0.209 in | 5.3 mm | 36-SSOP | ||
Analog Devices Inc./Maxim Integrated | 3 | 98.5 % | 3.8 V | 7 V | Surface Mount | 32-QFN (5x5) | 70 °C | 0 °C | Enable Phase Control Power Good Soft Start | 3 | 225 kHz | 680 kHz | Positive | Transistor Driver | Step-Down | Buck | |||||
 Analog Devices Inc./Maxim Integrated | 3 | 98.5 % | 3.8 V | 7 V | Surface Mount | 32-QFN (5x5) | 140 °C | -40 °C | Enable Phase Control Power Good Soft Start | 3 | 225 kHz | 680 kHz | Positive | Transistor Driver | Step-Down | Buck | |||||
 Analog Devices Inc./Maxim Integrated | 3 | 98.5 % | 3.8 V | 7 V | Surface Mount | 36-SSOP | 85 C | -40 ¯C | Enable Phase Control Power Good Soft Start | 3 | 225 kHz | 680 kHz | Positive | Transistor Driver | Step-Down | Buck | 0.209 in | 5.3 mm | 36-SSOP | ||
Analog Devices Inc./Maxim Integrated | 3 | 98.5 % | 3.8 V | 7 V | Surface Mount | 32-QFN (5x5) | 85 C | -40 ¯C | Enable Phase Control Power Good Soft Start | 3 | 225 kHz | 680 kHz | Positive | Transistor Driver | Step-Down | Buck | |||||
Analog Devices Inc./Maxim Integrated | 3 | 98.5 % | 3.8 V | 7 V | Surface Mount | 32-QFN (5x5) | 140 °C | -40 °C | Enable Phase Control Power Good Soft Start | 3 | 225 kHz | 680 kHz | Positive | Transistor Driver | Step-Down | Buck | |||||
Analog Devices Inc./Maxim Integrated | 3 | 98.5 % | 3.8 V | 7 V | Surface Mount | 36-SSOP | 85 C | -40 ¯C | Enable Phase Control Power Good Soft Start | 3 | 225 kHz | 680 kHz | Positive | Transistor Driver | Step-Down | Buck | 0.209 in | 5.3 mm | 36-SSOP | ||
 Analog Devices Inc./Maxim Integrated | 3 | 98.5 % | 3.8 V | 7 V | Surface Mount | 36-SSOP | 70 °C | 0 °C | Enable Phase Control Power Good Soft Start | 3 | 225 kHz | 680 kHz | Positive | Transistor Driver | Step-Down | Buck | 0.209 in | 5.3 mm | 36-SSOP | ||
Analog Devices Inc./Maxim Integrated | 3 | 98.5 % | 3.8 V | 7 V | Surface Mount | 32-QFN (5x5) | 140 °C | -40 °C | Enable Phase Control Power Good Soft Start | 3 | 225 kHz | 680 kHz | Positive | Transistor Driver | Step-Down | Buck |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
Description
General part information
LTC3731 Series
The LTC3731 is a PolyPhase®synchronous step-down switching regulator controller that drives all N-channel external power MOSFET stages in a phase-lockable fixed frequency architecture. The 3-phase controller drives its output stages with 120° phase separation at frequencies of up to 600kHz per phase to minimize the RMS current losses in both the input and output filter capacitors. The 3-phase technique effectively triples the fundamental frequency, improving transient response while operating each controller at an optimal frequency for efficiency and ease of thermal design. Light load efficiency is optimized by using a choice of output Stage Shedding or Burst Mode operation.A differential amplifier provides true remote sensing of both the high and low side of the output voltage at the point of load. The precision reference supports output voltages from 0.6V to 6V.Soft-start and a defeatable, timed short-circuit shutdown protect the MOSFETs and the load. Current foldback provides protection for the external MOSFETs under short-circuit or overload conditions.ApplicationsDesktop Computers and ServersHigh Performance Notebook ComputersHigh Output Current DC/DC Power Supplies
Documents
Technical documentation and resources