LTC3649IUFD#PBF
ActiveDC-DC SWITCHING SYNCHRONOUS BUCK REGULATOR, ADJUSTABLE, 3.1 TO 60V IN, 0 TO 59.5V/4A OUT, QFN-EP-28
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LTC3649IUFD#PBF
ActiveDC-DC SWITCHING SYNCHRONOUS BUCK REGULATOR, ADJUSTABLE, 3.1 TO 60V IN, 0 TO 59.5V/4A OUT, QFN-EP-28
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Technical Specifications
Parameters and characteristics for this part
| Specification | LTC3649IUFD#PBF |
|---|---|
| Current - Output | 4 A |
| Frequency - Switching | 1 MHz |
| Function | Step-Down |
| Mounting Type | Surface Mount |
| Number of Outputs | 1 |
| Operating Temperature [Max] | 125 °C |
| Operating Temperature [Min] | -40 C |
| Output Configuration | Positive |
| Output Type | Adjustable |
| Package / Case | 28-WFQFN Exposed Pad |
| Supplier Device Package | 28-QFN (4x5) |
| Synchronous Rectifier | True |
| Topology | Buck |
| Voltage - Input (Max) [Max] | 60 V |
| Voltage - Input (Min) [Min] | 3.1 V |
| Voltage - Output (Max) [Max] | 55 V |
| Voltage - Output (Min/Fixed) | 0 V |
LTC3649 Series
60V, 4A Synchronous Step-Down Regulator with Rail-to-Rail Programmable Output
| Part | Mounting Type | Synchronous Rectifier | Package / Case | Operating Temperature [Min] | Operating Temperature [Max] | Voltage - Input (Max) [Max] | Voltage - Output (Max) [Max] | Topology | Supplier Device Package | Frequency - Switching | Current - Output | Output Configuration | Voltage - Output (Min/Fixed) | Output Type | Function | Number of Outputs | Voltage - Input (Min) [Min] | Board Type | Supplied Contents | Outputs and Type | Outputs and Type | Regulator Topology | Voltage - Output | Main Purpose | Voltage - Input [Max] | Voltage - Input [Min] | Contents | Utilized IC / Part |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Analog Devices Inc./Maxim Integrated | Surface Mount | 28-WFQFN Exposed Pad | -40 C | 125 °C | 60 V | 55 V | Buck | 28-QFN (4x5) | 1 MHz | 4 A | Positive | 0 V | Adjustable | Step-Down | 1 | 3.1 V | ||||||||||||
 Analog Devices Inc./Maxim Integrated | Surface Mount | 28-TSSOP (0.173" 4.40mm Width) Exposed Pad | -40 C | 125 °C | 60 V | 55 V | Buck | 28-TSSOP-EP | 1 MHz | 4 A | Positive | 0 V | Adjustable | Step-Down | 1 | 3.1 V | ||||||||||||
 Analog Devices Inc./Maxim Integrated | 500 kHz | 4 A | Fully Populated | Board(s) | 1 | 1 Non-Isolated Output Non-Isolated | Buck | 3.3 V 5 V | DC/DC Step Down | 60 V | 4 V | Board(s) | LTC3649 | |||||||||||||||
Analog Devices Inc./Maxim Integrated | Surface Mount | 28-WFQFN Exposed Pad | -40 C | 125 °C | 60 V | 55 V | Buck | 28-QFN (4x5) | 1 MHz | 4 A | Positive | 0 V | Adjustable | Step-Down | 1 | 3.1 V | ||||||||||||
Analog Devices Inc./Maxim Integrated | Surface Mount | 28-TSSOP (0.173" 4.40mm Width) Exposed Pad | -40 C | 125 °C | 60 V | 55 V | Buck | 28-TSSOP-EP | 1 MHz | 4 A | Positive | 0 V | Adjustable | Step-Down | 1 | 3.1 V | ||||||||||||
Analog Devices Inc./Maxim Integrated | Surface Mount | 28-TSSOP (0.173" 4.40mm Width) Exposed Pad | -40 C | 125 °C | 60 V | 55 V | Buck | 28-TSSOP-EP | 1 MHz | 4 A | Positive | 0 V | Adjustable | Step-Down | 1 | 3.1 V | ||||||||||||
Analog Devices Inc./Maxim Integrated | Surface Mount | 28-WFQFN Exposed Pad | -40 C | 125 °C | 60 V | 55 V | Buck | 28-QFN (4x5) | 1 MHz | 4 A | Positive | 0 V | Adjustable | Step-Down | 1 | 3.1 V | ||||||||||||
 Analog Devices Inc./Maxim Integrated | Surface Mount | 28-WFQFN Exposed Pad | -40 C | 125 °C | 60 V | 55 V | Buck | 28-QFN (4x5) | 1 MHz | 4 A | Positive | 0 V | Adjustable | Step-Down | 1 | 3.1 V | ||||||||||||
 Analog Devices Inc./Maxim Integrated | 500 kHz | 4 A | 1 Non-Isolated Output | Buck | 3.3 V 5 V | DC/DC Step Down | 60 V | 4 V | Board(s) | LTC3649 | ||||||||||||||||||
Analog Devices Inc./Maxim Integrated | Surface Mount | 28-TSSOP (0.173" 4.40mm Width) Exposed Pad | -40 C | 125 °C | 60 V | 55 V | Buck | 28-TSSOP-EP | 1 MHz | 4 A | Positive | 0 V | Adjustable | Step-Down | 1 | 3.1 V |
Pricing
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Description
General part information
LTC3649 Series
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 VOUTrange.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.ApplicationsIndustrial ApplicationsAutomotive Applications
Documents
Technical documentation and resources