LTC3858EUFD-1#PBF - High Performance Dual Output Synchronous Step-Down DC/DC Controller

The LTC3858EUFD-1#PBF is a versatile and high-performance dual output synchronous step-down DC/DC controller produced by Linear Technology. This advanced component is designed to drive all N-channel power MOSFET stages, which can generate a broad range of output voltages with a high degree of efficiency and accuracy. It is an ideal solution for applications requiring precise voltage regulation and high power density, such as data communications, telecommunications, and industrial systems.

The LTC3858EUFD-1#PBF operates over a wide input voltage range of 4.5V to 38V, making it suitable for a variety of supply sources, including multi-cell batteries, non-standard intermediate buses, and automotive inputs. It can produce output voltages as low as 0.8V, allowing it to power the latest generation of low-voltage digital ICs. The controller's two channels can be configured to run out of phase, reducing the required input capacitance and smoothing the input current.

This component features a powerful 1.1Ω onboard gate drivers, which minimize MOSFET switching losses and ensure robust operation. Its phase-lockable fixed frequency from 50kHz to 900kHz and selectable continuous, pulse-skipping, or low ripple Burst Mode operation make it highly adaptable to specific application requirements, balancing efficiency and noise considerations.

The LTC3858EUFD-1#PBF incorporates a range of protective features to ensure reliable operation under adverse conditions. These include overvoltage, undervoltage, and overcurrent protection. The current mode operation provides excellent line and load transient response, while the differential output voltage sensing ensures precise voltage regulation, regardless of PCB-induced voltage drops.

Offered in a 28-lead 4mm x 5mm QFN package, the LTC3858EUFD-1#PBF is designed for compact and thermally efficient layouts. Its advanced performance and comprehensive feature set make it an excellent choice for designers looking to create high-efficiency, dual output power supply systems.