LTC3839 (4)
The LTC3839 is available from Analog Devices at Xecor. Designed for single-output step-down DC/DC control, the LTC3839 offers wide input voltage range (4.5V to 38V), high output voltage accuracy (±0.67%), and fast load transient response. Available in a 32-pin QFN package, it is ideal for distributed power systems, point-of-load converters, computing systems, and data communication systems. Whether used in high-performance computing or industrial power management, this series ensures efficiency, scalability, and reliability for demanding applications. Xecor is an authorized distributor for Analog Devices. Please view our extensive selection of the LTC3839 series below.
| Part Number | Description | Package | Inventory | Add To Bom |
|---|---|---|---|---|
| LTC3839IUH#TRPBF | DC/DC Controller | QFN-32 | 4,859 | |
| LTC3839EUH#TRPBF | DC/DC Cntrlr Single-OUT Step Down 2000kHz 32-Pin QFN EP T/R | QFN-32 | 8,588 | |
| LTC3839EUH#PBF | DC/DC Cntrlr Single-OUT Step Down 2000kHz 32-Pin QFN EP Tube | QFN-32 | 9,055 | |
| LTC3839IUH#PBF | DC/DC Cntrlr Single-OUT Step Down 2000kHz 32-Pin QFN EP Tube | QFN-32 | 9,589 |
Key Featrues
Wide Input Voltage Range (4.5V to 38V): This feature allows the controller to operate efficiently across a broad range of input voltages, making it versatile for various power supply applications, including automotive, industrial, and computing systems. It ensures stable performance even with fluctuating input voltages, enhancing reliability in diverse environments.
Controlled On-Time, Valley Current Mode Control: This architecture enables fast transient response and maintains constant frequency switching during steady-state operation, regardless of changes in input voltage, output voltage, or load current. This results in improved efficiency and reduced output voltage ripple, making it ideal for high-performance power systems.
Differential Output Voltage Sensing: This feature allows for accurate voltage regulation by compensating for up to ±500mV of line loss at remote ground. It ensures precise output voltage control, which is critical for applications requiring tight voltage tolerances, such as point-of-load converters and data communication systems.
Programmable Switching Frequency (200kHz to 2MHz): The ability to adjust the switching frequency provides flexibility to optimize the design for efficiency, component size, and EMI performance. Higher frequencies allow for smaller inductors and capacitors, reducing the overall footprint of the power supply design.
Thermally Enhanced 32-Pin QFN Package: The compact 5mm × 5mm QFN package with an exposed pad improves thermal performance, enabling efficient heat dissipation in high-power applications. This enhances the controller's reliability and longevity, particularly in space-constrained designs or environments with high ambient temperatures.
Controlled On-Time, Valley Current Mode Control: This architecture enables fast transient response and maintains constant frequency switching during steady-state operation, regardless of changes in input voltage, output voltage, or load current. This results in improved efficiency and reduced output voltage ripple, making it ideal for high-performance power systems.
Differential Output Voltage Sensing: This feature allows for accurate voltage regulation by compensating for up to ±500mV of line loss at remote ground. It ensures precise output voltage control, which is critical for applications requiring tight voltage tolerances, such as point-of-load converters and data communication systems.
Programmable Switching Frequency (200kHz to 2MHz): The ability to adjust the switching frequency provides flexibility to optimize the design for efficiency, component size, and EMI performance. Higher frequencies allow for smaller inductors and capacitors, reducing the overall footprint of the power supply design.
Thermally Enhanced 32-Pin QFN Package: The compact 5mm × 5mm QFN package with an exposed pad improves thermal performance, enabling efficient heat dissipation in high-power applications. This enhances the controller's reliability and longevity, particularly in space-constrained designs or environments with high ambient temperatures.
Applications
Distributed Power Systems: The LTC3839 is ideal for distributed power systems, where its 2-phase, single-output step-down DC/DC controller ensures efficient power delivery across multiple nodes. Its wide input voltage range (4.5V to 38V) and precise output voltage control (0.6V to 5.5V) make it suitable for managing power in complex, multi-module systems, ensuring stable and reliable operation in industrial and telecommunications environments.
Point-of-Load Converters: The LTC3839 excels in point-of-load (POL) converter applications, providing fast and accurate voltage regulation for sensitive loads. Its differential output sensing and ±0.67% output voltage accuracy ensure minimal voltage drop across long traces, making it perfect for powering high-performance processors, FPGAs, and ASICs in computing and data communication systems.
Computing Systems: The LTC3839 is well-suited for computing systems, where its fast transient response and programmable switching frequency (200kHz to 2MHz) enable efficient power management for CPUs, GPUs, and memory modules. Its ability to synchronize with external clocks and support up to 12-phase operation ensures optimal performance in high-performance computing environments.
Data Communication Systems: The LTC3839 is an excellent choice for data communication systems, where its robust design and high efficiency ensure reliable power delivery for networking equipment. Its features like overvoltage protection, current limit foldback, and power good monitoring make it ideal for maintaining system integrity in data centers and communication hubs, even under demanding operational conditions.
Point-of-Load Converters: The LTC3839 excels in point-of-load (POL) converter applications, providing fast and accurate voltage regulation for sensitive loads. Its differential output sensing and ±0.67% output voltage accuracy ensure minimal voltage drop across long traces, making it perfect for powering high-performance processors, FPGAs, and ASICs in computing and data communication systems.
Computing Systems: The LTC3839 is well-suited for computing systems, where its fast transient response and programmable switching frequency (200kHz to 2MHz) enable efficient power management for CPUs, GPUs, and memory modules. Its ability to synchronize with external clocks and support up to 12-phase operation ensures optimal performance in high-performance computing environments.
Data Communication Systems: The LTC3839 is an excellent choice for data communication systems, where its robust design and high efficiency ensure reliable power delivery for networking equipment. Its features like overvoltage protection, current limit foldback, and power good monitoring make it ideal for maintaining system integrity in data centers and communication hubs, even under demanding operational conditions.
Popular LTC3839 Products comparison