LTC3806EDE#PBF

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The LTC3806EDE#PBF is a state-of-the-art DC-DC controller designed to enable efficient, compact, low-cost DC-DC power supply solutions. It is well-suited for applications such as portable electronics as well as datacenters, RF/wireless infrastructure, medical equipment, industrial automation, and automotive electronics. The LTC3806EDE#PBF combines a wide input voltage range, high efficiency, and small size into a highly-integrated package.

Application Field

The LTC3806EDE#PBF is an ideal DC-DC switching controller for a wide range of non-synchronous buck converters (step-down), flyback, and SEPIC converters (step-up/down). It also supports synchronous converters that use external power MOSFETs, such as synchronous buck, SEPIC, and Zeta converters. As such, the LTC3806EDE#PBF is suitable for the following applications:

• Portable electronics: smartphones, laptops, wearables, and tablets.
• Datacenters: server, storage, and networking applications.
• RF/Wireless Infrastructure: base stations, access points, and telecommunication systems.
• Medical Equipment: diagnostic, therapeutic, imaging, and monitoring applications.
• Industrial Automation: industrial controllers, machine vision, process control, and automation.
• Automotive Electronics: body electronics, infotainment, safety and autonomous driving systems.

The LTC3806EDE#PBF can also be used in other semiconductor applications that require a DC-DC converter, such as FPGA/ASIC testing and verification, motor control, and memory programming.

Working Principle

The LTC3806EDE#PBF is an IC controller with a constant on-time control-loop architecture and an advanced synchronization capability. The device is designed to be used with external MOSFETs and external compensation, making it versatile enough to cover a wide range of applications, from simple step-down converters to complex SEPIC applications. The LTC3806EDE#PBF features programmable switching frequency up to 1MHz, allowing designers to optimize their solution for size, cost, and efficiency.

The device integrates proprietary NexFET power MOSFET gate drivers as well as synchronous rectification drivers. These drivers enhance switching performance and simplify design. Other features include internal current limits, adjustable soft-start, power-good indicator, and a wide range of phase-lock loop (PLL) clock frequencies. The PLL allows the device to synchronize with an external clock, eliminating jitter while providing precise sub-millisecond switching frequencies. The LTC3806EDE#PBF also supports multi-phase operation, allowing it to be used in solutions that require multiple outputs.

The LTC3806EDE#PBF is a highly-integrated device that reduces implementation complexity, cost, and solution size. It is packaged in a space-saving QFN-16 package, making it ideal for space-constrained applications. The device supports a wide input voltage range from 2.5V to 42V and is rated for a junction temperature of 125°C.

Conclusion

The LTC3806EDE#PBF is a high performance DC-DC controller with an advanced constant-on time control-loop architecture and synchronization capabilities. The device is ideal for applications requiring a wide input voltage range, high efficiency and small size. It offers comprehensive features with an integrated synchronous rectification drivers, current limit, adjustable softstart, power-good indicator and wide PLL frequencies. The device also features a space-saving QFN-16 package, making it suitable for space-constrained applications.

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