LTC3851AEMSE#PBF - High Performance Step-Down Switching Regulator Controller

The LTC3851AEMSE#PBF is a versatile and robust synchronous step-down switching regulator controller designed and manufactured by Linear Technology. This high-performance component is engineered to drive all N-channel power MOSFET stages in a phase-lockable fixed frequency architecture, making it ideal for a wide range of power regulation applications.

With its wide input voltage range of 4V to 38V, the LTC3851AEMSE#PBF is suitable for regulating power from a variety of sources, including automotive batteries, industrial supplies, and complex multi-cell battery packs. Its output voltage can be set from 0.8V to 24V, which enables it to power the latest generation of microprocessors and DSPs that require low voltage and high current.

The device features a powerful 1.1Ω onboard gate drivers and utilizes a constant frequency current mode architecture, providing excellent line and load transient response. Additionally, it supports selectable operating modes, allowing users to choose between Burst Mode operation for high efficiency at low output currents or forced continuous mode for lowest noise and best output voltage ripple.

Other significant features of the LTC3851AEMSE#PBF include a phase-lockable frequency range of 250kHz to 2.25MHz, a tracking capability for smooth supply sequencing, and overvoltage and foldback current protection for enhanced reliability and safety. Its adjustable soft-start limits inrush current during startup, and it also has a power good output signal for health monitoring of the voltage rails.

The LTC3851AEMSE#PBF is available in a thermally enhanced MSOP-16 package, ensuring efficient heat dissipation and reliable performance in challenging thermal environments. This product is RoHS compliant and lead-free, making it suitable for use in eco-conscious applications.

Whether for telecommunications, automotive, industrial, or computing applications, the LTC3851AEMSE#PBF from Linear Technology stands out as a high-quality, reliable choice for engineers looking to implement an efficient power management solution.