LTC3857-1 (4)
The LTC3857-1 is available from Analog Devices Inc. Inc. at Xecor. Designed for high-performance dual step-down DC-DC conversion, the LTC3857-1 offers low operating IQ (50µA), a wide input voltage range (4V to 38V), and out-of-phase operation to minimize input capacitance and noise. Available in a 28-pin SSOP package, it is ideal for automotive always-on systems, battery-operated digital devices, and distributed DC power systems. Whether used in automotive electronics or portable devices, this series ensures efficiency, scalability, and reliable performance for demanding applications. Xecor is an authorized distributor for Analog Devices Inc. Inc.. Please view our extensive selection of the LTC3857-1 series below.
| Part Number | Description | Package | Inventory | Add To Bom |
|---|---|---|---|---|
| LTC3857EGN-1#PBF | Dual-phase configuration simplifies design and improves overall performance | SSOP-28 | 7,878 | |
| LTC3857EGN-1#TRPBF | High-Efficiency Power Management Solution | SSOP-28 | 6,149 | |
| LTC3857IGN-1#PBF | DC/DC Cntrlr Dual-OUT Step Down 900kHz 28-Pin SSOP N Tube | SSOP-28 | 7,800 | |
| LTC3857IGN-1#TRPBF | DC/DC Cntrlr Dual-OUT Step Down 900kHz 28-Pin SSOP N T/R | SSOP-28 | 6,213 |
Key Featrues
Low Operating IQ (50µA): The LTC3857-1 features an ultra-low quiescent current of 50µA when one channel is active, significantly enhancing efficiency in battery-operated and always-on systems. This low power consumption extends battery life and reduces energy waste in power-sensitive applications.
Wide Input Voltage Range (4V to 38V): With an input voltage range of 4V to 38V, the controller is highly versatile, making it suitable for a variety of power sources, including automotive and industrial systems. This flexibility ensures stable operation across diverse voltage conditions.
Out-of-Phase Controllers: The dual controllers operate out of phase, reducing input capacitance requirements and minimizing power supply-induced noise. This feature improves system reliability and reduces the need for additional filtering components, lowering overall design complexity and cost.
Programmable Frequency (50kHz to 900kHz): The device allows for programmable switching frequencies between 50kHz and 900kHz, enabling designers to optimize efficiency and minimize electromagnetic interference (EMI) for specific applications. This adaptability is particularly useful in noise-sensitive environments.
Selectable Light Load Modes: The LTC3857-1 offers selectable operation modes (continuous, pulse-skipping, or low ripple Burst Mode) for light loads, enhancing efficiency during low-power conditions. This feature is ideal for applications with varying load demands, such as portable electronics or IoT devices.
Wide Input Voltage Range (4V to 38V): With an input voltage range of 4V to 38V, the controller is highly versatile, making it suitable for a variety of power sources, including automotive and industrial systems. This flexibility ensures stable operation across diverse voltage conditions.
Out-of-Phase Controllers: The dual controllers operate out of phase, reducing input capacitance requirements and minimizing power supply-induced noise. This feature improves system reliability and reduces the need for additional filtering components, lowering overall design complexity and cost.
Programmable Frequency (50kHz to 900kHz): The device allows for programmable switching frequencies between 50kHz and 900kHz, enabling designers to optimize efficiency and minimize electromagnetic interference (EMI) for specific applications. This adaptability is particularly useful in noise-sensitive environments.
Selectable Light Load Modes: The LTC3857-1 offers selectable operation modes (continuous, pulse-skipping, or low ripple Burst Mode) for light loads, enhancing efficiency during low-power conditions. This feature is ideal for applications with varying load demands, such as portable electronics or IoT devices.
Applications
Automotive Always-On Systems: The LTC3857-1 is ideal for powering always-on systems in automotive applications, such as infotainment systems, telematics, and advanced driver-assistance systems (ADAS). Its low operating IQ and wide input voltage range ensure efficient power management, even during extended periods of vehicle inactivity, making it suitable for modern automotive electronics.
Battery-Operated Digital Devices: The LTC3857-1 is perfect for battery-operated devices like portable medical equipment, handheld test instruments, and IoT devices. Its dual-output step-down capability and low quiescent current extend battery life, while its programmable frequency and light-load operation modes optimize efficiency across varying load conditions.
Distributed DC Power Systems: The LTC3857-1 is well-suited for distributed power systems in industrial and telecommunications applications. Its out-of-phase controllers reduce input capacitance requirements and minimize power supply noise, ensuring stable and efficient power delivery across multiple loads in complex systems.
High-Performance Computing Systems: The LTC3857-1 is an excellent choice for powering high-performance computing systems, such as servers and data storage devices. Its dual-output design, high switching frequency, and precise voltage regulation ensure reliable and efficient power delivery to critical components, supporting demanding computational workloads.
Battery-Operated Digital Devices: The LTC3857-1 is perfect for battery-operated devices like portable medical equipment, handheld test instruments, and IoT devices. Its dual-output step-down capability and low quiescent current extend battery life, while its programmable frequency and light-load operation modes optimize efficiency across varying load conditions.
Distributed DC Power Systems: The LTC3857-1 is well-suited for distributed power systems in industrial and telecommunications applications. Its out-of-phase controllers reduce input capacitance requirements and minimize power supply noise, ensuring stable and efficient power delivery across multiple loads in complex systems.
High-Performance Computing Systems: The LTC3857-1 is an excellent choice for powering high-performance computing systems, such as servers and data storage devices. Its dual-output design, high switching frequency, and precise voltage regulation ensure reliable and efficient power delivery to critical components, supporting demanding computational workloads.
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