LTC3838-1 (4)
The LTC3838-1 is available from Analog Devices at Xecor. Designed for dual-channel, fast, and accurate step-down DC/DC control, the LTC3838-1 offers wide input voltage range (4.5V to 38V), dual differential output sensing, and controlled on-time valley current mode control for fast transient response. Available in a thermally enhanced 38-pin QFN package, it is ideal for distributed power systems, computing, data storage, and communication systems requiring low voltage, high current, and tight load transient regulation. Whether used in ASIC power supplies or high step-down ratio converters, this series ensures high efficiency, precise voltage regulation, and reduced overshoot for demanding applications. Xecor is an authorized distributor for Analog Devices. Please view our extensive selection of the LTC3838-1 series below.
| Part Number | Description | Package | Inventory | Add To Bom |
|---|---|---|---|---|
| LTC3838IUHF-1#TRPBF | Dual-output control with LTC3838IUHF-1#TRPBF for versatile setups | QFN-38 | 5,270 | |
| LTC3838EUHF-1#TRPBF | Two-switch buck regulator with improved efficiency | QFN-38 | 8,290 | |
| LTC3838EUHF-1#PBF | DC/DC Cntrlr Dual-OUT Step Down 2000kHz 38-Pin QFN EP Tube | QFN-38 | 9,639 | |
| LTC3838IUHF-1#PBF | Two-in-one solution for efficient power management in electronic devices | QFN-38 | 2,855 |
Key Featrues
Wide VIN Range (4.5V to 38V): This feature allows the LTC3838-1 to operate across a broad input voltage range, making it versatile for various applications, including automotive, industrial, and communication systems. It ensures reliable performance even with fluctuating input voltages, enhancing system stability and efficiency.
Dual Independent Channels with Differential Remote Sensing: The dual-channel design supports either dual or single output configurations, providing flexibility in power management. Differential remote sensing compensates for ground deviations up to ±500mV (VOUT1) and ±200mV (VOUT2), ensuring precise output voltage regulation in systems with long PCB traces or high current paths.
Controlled On-Time, Valley Current Mode Control: This architecture enables fast transient response without clock delay, improving efficiency and performance during load changes. It also maintains constant frequency switching under steady load conditions, reducing noise and enhancing system reliability.
Detect Transient Release (DTR): The DTR feature minimizes output voltage overshoot during load transients, particularly at low output voltages. This ensures tighter voltage regulation, protects sensitive loads, and improves overall system performance in applications requiring rapid load changes.
Frequency Programmability (200kHz to 2MHz): The ability to program the switching frequency allows optimization for efficiency, noise, and component size. Synchronization to an external clock further enhances system integration and reduces electromagnetic interference (EMI) in multi-rail power systems.
Dual Independent Channels with Differential Remote Sensing: The dual-channel design supports either dual or single output configurations, providing flexibility in power management. Differential remote sensing compensates for ground deviations up to ±500mV (VOUT1) and ±200mV (VOUT2), ensuring precise output voltage regulation in systems with long PCB traces or high current paths.
Controlled On-Time, Valley Current Mode Control: This architecture enables fast transient response without clock delay, improving efficiency and performance during load changes. It also maintains constant frequency switching under steady load conditions, reducing noise and enhancing system reliability.
Detect Transient Release (DTR): The DTR feature minimizes output voltage overshoot during load transients, particularly at low output voltages. This ensures tighter voltage regulation, protects sensitive loads, and improves overall system performance in applications requiring rapid load changes.
Frequency Programmability (200kHz to 2MHz): The ability to program the switching frequency allows optimization for efficiency, noise, and component size. Synchronization to an external clock further enhances system integration and reduces electromagnetic interference (EMI) in multi-rail power systems.
Applications
Distributed Power Systems: The LTC3838-1 is ideal for managing power distribution in complex systems, such as data centers or telecommunications infrastructure. Its dual-channel design and differential remote output sensing ensure precise voltage regulation, even in environments with significant ground deviations, making it suitable for high-reliability power systems.
Power Supply for ASICs: The LTC3838-1 is well-suited for providing stable and efficient power to Application-Specific Integrated Circuits (ASICs). Its fast load transient response and tight output voltage regulation accuracy (±0.67% for VOUT1 and ±0.75% for VOUT2) ensure reliable operation in high-performance computing and data storage applications.
Low Voltage, High Current Converters: The LTC3838-1 excels in applications requiring low voltage and high current outputs, such as advanced computing and communication systems. Its controlled on-time, valley current mode control architecture and Detect Transient Release (DTR) feature minimize overshoot, ensuring stable performance under demanding load conditions.
High Step-Down Ratio Converters: The LTC3838-1 is perfect for applications requiring high step-down ratios, such as powering low-voltage processors or FPGAs. Its wide input voltage range (4.5V to 38V) and programmable frequency (200kHz to 2MHz) allow for flexible design, while its differential remote sensing ensures accurate voltage regulation even with significant ground deviations.
Power Supply for ASICs: The LTC3838-1 is well-suited for providing stable and efficient power to Application-Specific Integrated Circuits (ASICs). Its fast load transient response and tight output voltage regulation accuracy (±0.67% for VOUT1 and ±0.75% for VOUT2) ensure reliable operation in high-performance computing and data storage applications.
Low Voltage, High Current Converters: The LTC3838-1 excels in applications requiring low voltage and high current outputs, such as advanced computing and communication systems. Its controlled on-time, valley current mode control architecture and Detect Transient Release (DTR) feature minimize overshoot, ensuring stable performance under demanding load conditions.
High Step-Down Ratio Converters: The LTC3838-1 is perfect for applications requiring high step-down ratios, such as powering low-voltage processors or FPGAs. Its wide input voltage range (4.5V to 38V) and programmable frequency (200kHz to 2MHz) allow for flexible design, while its differential remote sensing ensures accurate voltage regulation even with significant ground deviations.
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